{"title":"JPstore - CVT \u0026 Drive","description":null,"products":[{"product_id":"gy6s-1200-1164-37-ncy-gear-set-15-37-for-150cc-232cc-gy6-scooters-atvs-karts","title":"NCY GEAR SET (15*37) FOR 150cc - 232cc GY6 SCOOTERS ATVS KARTS","description":"NCY 15T \/ 37T Performance Up Gear Set for GY6 125cc–200cc Engines \u003cp\u003eIncrease your scooter's top speed and make better use of your engine's power with the \u003cstrong\u003eNCY 15T\/37T Performance Final Drive Gear Set\u003c\/strong\u003e. Manufactured in \u003cstrong\u003eTaiwan\u003c\/strong\u003e using premium materials and precision machining, this transmission upgrade is designed for riders who have installed performance modifications such as big bore kits, stroker cranks, upgraded camshafts, or high-performance CVT components.\u003c\/p\u003e \u003cp\u003eCompared to the factory \u003cstrong\u003e13T\/40T\u003c\/strong\u003e gear set, the NCY \u003cstrong\u003e15T\/37T\u003c\/strong\u003e gears provide approximately a \u003cstrong\u003e20% taller (up gear) ratio\u003c\/strong\u003e, allowing the engine to maintain lower RPM at cruising speeds while increasing the scooter's overall top-end speed.\u003c\/p\u003e \u003ch2\u003eWhy Upgrade Your Final Drive Gears?\u003c\/h2\u003e \u003cp\u003eThe final drive gears are the last reduction gears inside your GY6 transmission before power reaches the rear wheel. Changing these gears has a major effect on how your scooter accelerates and how fast it can travel.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eStock Gear Ratio (13T \/ 40T):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e40 ÷ 13 = \u003cstrong\u003e3.076:1\u003c\/strong\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eNCY Up Gear Ratio (15T \/ 37T):\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e37 ÷ 15 = \u003cstrong\u003e2.466:1\u003c\/strong\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eBecause the numerical ratio is lower, the rear wheel turns farther with each engine revolution. This results in:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eHigher potential top speed\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eLower cruising RPM\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMore usable power at higher speeds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBetter performance from engines producing additional horsepower\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThe NCY 15T\/37T gear set provides approximately a \u003cstrong\u003e20% taller final drive ratio\u003c\/strong\u003e than stock.\u003c\/p\u003e Understanding GY6 Gear Ratios \u003ch3\u003eHigher Numerical Ratio (Example: 3.07:1 Stock)\u003c\/h3\u003e \u003cp\u003eA larger gear ratio gives the rear wheel more mechanical leverage.\u003c\/p\u003e \u003cp\u003eAdvantages:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eStronger acceleration\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBetter hill climbing\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eFaster take-off\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eIdeal for stock or lightly modified engines\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eDisadvantages:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eHigher engine RPM at cruising speed\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eLower maximum speed\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eLower Numerical Ratio (Example: 2.46:1 NCY Up Gear)\u003c\/h3\u003e \u003cp\u003eA smaller numerical ratio reduces mechanical leverage but allows the rear wheel to rotate farther with each engine revolution.\u003c\/p\u003e \u003cp\u003eAdvantages:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eHigher top speed\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eLower cruising RPM\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBetter use of high horsepower engines\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eImproved highway performance\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eDisadvantages:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eSlightly reduced mechanical torque at very low speeds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eWorks best on engines that produce additional power\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e Which Gear Ratio Works Best? \u003ch3\u003eStock 125cc–150cc Engines\u003c\/h3\u003e \u003cp\u003eRecommended:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eFactory gearing\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSmall up gears only if mostly flat riding\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eReason:\u003cbr\u003eStock engines generally do not produce enough power to fully utilize aggressive taller gearing.\u003c\/p\u003e \u003ch3\u003e155cc–169cc Big Bore Builds\u003c\/h3\u003e \u003cp\u003eIdeal Choice:\u003cbr\u003e\u003cstrong\u003eNCY 15T \/ 37T\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eExcellent combination of:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eStrong acceleration\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eIncreased top speed\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eComfortable cruising RPM\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003ePerfect for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eMild performance builds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eCamshaft upgrades\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePerformance exhaust\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eVariator upgrades\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e171cc–180cc Performance Builds\u003c\/h3\u003e \u003cp\u003eRecommended:\u003cbr\u003e\u003cstrong\u003eNCY 15T \/ 37T\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThe additional displacement easily pulls the taller gearing while maintaining excellent acceleration.\u003c\/p\u003e \u003cp\u003eIdeal with:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e61mm cylinders\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e63mm cylinders\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eStroker crankshafts\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003ePerformance CVT systems\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e180cc–200cc+ High Performance Builds\u003c\/h3\u003e \u003cp\u003eThe NCY 15T\/37T is an excellent all-around choice, especially for street riding.\u003c\/p\u003e \u003cp\u003eEngines producing substantial horsepower benefit from taller gearing by:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eReducing unnecessary RPM\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eImproving sustained high-speed cruising\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBetter utilizing available horsepower\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e Specifications \u003cp\u003e\u003cstrong\u003eFront Counter Shaft\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eTeeth: 15\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOverall Length: 60mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSpline Length: 24mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOutside Diameter: 31.1mm\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eGear Press-On Area\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eLength: 12.08mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOutside Diameter: 19.08mm\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eEnds\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eLength: 9–10.5mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOutside Diameter: 15mm\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRear Final Drive Gear\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eTeeth: 37\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSpline Count: 19\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOutside Diameter: 71.2mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eInside Diameter: 18mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eWidth: 20mm\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e Installation Note \u003cp\u003eThe factory countershaft gear is press-fitted onto the shaft.\u003c\/p\u003e \u003cp\u003eInstallation requires access to a \u003cstrong\u003e12-ton hydraulic press\u003c\/strong\u003e (or equivalent) to safely remove the original gear and install the new NCY gear.\u003c\/p\u003e \u003cp\u003eProfessional installation is recommended if proper equipment is unavailable.\u003c\/p\u003e Compatibility \u003cp\u003eFits most GY6-based 125cc–200cc engines including:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e157QMJ\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e152QMI\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e161QMK\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e1P61QMK\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYN1P57QMJ\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eJJ157QMJ\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBN157QMJ\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBN161QMK-A\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e154FMI\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e1P52FMI\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e1P57QMJ\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eAlso compatible with many other engines whose engine code contains \u003cstrong\u003eQM\u003c\/strong\u003e, \u003cstrong\u003eQMK\u003c\/strong\u003e, \u003cstrong\u003eQMI\u003c\/strong\u003e, or \u003cstrong\u003eFM\u003c\/strong\u003e.\u003c\/p\u003e About NCY \u003cp\u003eNCY has been producing premium scooter performance components in \u003cstrong\u003eTaiwan since 1997\u003c\/strong\u003e and is recognized worldwide for manufacturing high-quality drivetrain, suspension, engine, and performance parts. Every component is built to strict quality standards for reliability, durability, and long service life.\u003c\/p\u003e","brand":"ChinesePartsPro","offers":[{"title":"Default Title","offer_id":53556327743800,"sku":"1200-1164 *37","price":40.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/8898\/6997\/files\/s-l1600__81724.1584043755.jpg?v=1792867004"},{"product_id":"gy6s-1200-1277-rdln-105mm-racing-clutch-1500rpm-gy6-50cc-80cc-139qmb-qma-scooter-atv","title":"RDLN 105mm Racing Clutch 1500RPM GY6 50cc 80cc 139QMB QMA Scooter ATV","description":"RDLN 105mm RACING CLUTCH WITH 1500 RPM SPRINGS \u003ch3\u003eFOR GY6 139QMB \/ QMA 50cc–80cc 4-STROKE ENGINES\u003c\/h3\u003e \u003cp\u003eUpgrade your GY6 drivetrain with the \u003cstrong\u003eRDLN Racing Clutch Assembly\u003c\/strong\u003e, designed for 139QMB\/QMA-based 4-stroke engines.\u003c\/p\u003e \u003cp\u003eThis performance clutch comes \u003cstrong\u003epre-assembled with 1500 RPM clutch springs\u003c\/strong\u003e for a higher-RPM, more aggressive clutch engagement than a typical stock setup. Allowing the engine to build additional RPM before clutch engagement can provide a \u003cstrong\u003equicker, stronger launch from a stop\u003c\/strong\u003e when properly matched to your engine and CVT setup.\u003c\/p\u003e \u003cp\u003eA great upgrade for stock or modified 139QMB engines, including many engines equipped with 72cc and 80cc big-bore kits.\u003c\/p\u003e \u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e RDLN\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eProduct:\u003c\/strong\u003e Performance Racing Clutch Assembly\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eClutch Outer Diameter:\u003c\/strong\u003e 105mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eInner Hole Dimensions:\u003c\/strong\u003e 24 x 28mm\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eClutch Springs:\u003c\/strong\u003e 1500 RPM\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eClutch Type:\u003c\/strong\u003e Centrifugal CVT Clutch\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e GY6 139QMB \/ QMA Engine Family\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4-Stroke\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 Complete Clutch Assembly\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eMade in Taiwan\u003c\/strong\u003e\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePERFORMANCE FEATURES\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e1500 RPM performance clutch springs\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMore aggressive engagement than a typical stock clutch\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eAllows engine RPM to build before clutch engagement\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eHelps improve initial acceleration and takeoff\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eGreat for stock and performance-modified engines\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eExcellent addition to a tuned CVT system\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eComplete assembled clutch — not just replacement springs\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMade in Taiwan\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCOMPATIBLE ENGINE CODES\u003c\/h2\u003e \u003cp\u003eDesigned for many 139QMB\/QMA-family engines, including:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e139QMA\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e139QMB\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e1P39QMB\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e1P39QMA-2\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eYN139QMB\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eJJ1P39QMB\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e139FMA-2\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBD1P39QMB\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBN139QMB\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e147QMD\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOther compatible QMA\/QMB variants using the same clutch dimensions\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCOMMON APPLICATIONS\u003c\/h2\u003e \u003cp\u003eCommonly used on Chinese 4-stroke:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e49cc \/ 50cc Scooters\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e60cc Big-Bore Builds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e72cc Big-Bore Builds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e80cc Big-Bore Builds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMopeds\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eSmall ATVs\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eOther vehicles using compatible 139QMB\/QMA drivetrains\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eCommon Chinese vehicle brands using 139QMB-style engines may include:\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTaoTao \/ Tao Motor, Ice Bear, Jonway, Roketa, Peace Sports, JMSTAR, SUNL, Tank, Wolf, Bintelli and many others.\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eVehicle brand alone does NOT guarantee fitment.\u003c\/strong\u003e\u003c\/p\u003e \u003ch2\u003e50cc \/ 72cc \/ 80cc FITMENT\u003c\/h2\u003e \u003cp\u003eMany engines advertised as \u003cstrong\u003e72cc or 80cc\u003c\/strong\u003e started as 49cc\/50cc 139QMB engines and were upgraded with a larger cylinder and piston.\u003c\/p\u003e \u003cp\u003eIf the engine retains the compatible \u003cstrong\u003e139QMB\/QMA CVT system and 105mm clutch configuration\u003c\/strong\u003e, this performance clutch may still be used.\u003c\/p\u003e \u003cp\u003eEngine displacement alone should NOT be used to determine fitment.\u003c\/p\u003e \u003ch2\u003eWHAT DO 1500 RPM CLUTCH SPRINGS DO?\u003c\/h2\u003e \u003cp\u003eThe clutch shoes in a centrifugal clutch move outward as engine RPM increases.\u003c\/p\u003e \u003cp\u003eThe performance springs hold the clutch shoes inward longer than typical stock springs, allowing the engine to build additional RPM before the shoes engage the clutch bell.\u003c\/p\u003e \u003cp\u003eThis can provide:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eQuicker launch from a stop\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eMore aggressive clutch engagement\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eImproved low-speed acceleration\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003eBetter response on properly tuned performance engines\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e The 1500 RPM designation is a performance spring rating and should not be interpreted as a guarantee that the clutch will engage at exactly 1,500 engine RPM. 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LONGEVITY\u003c\/strong\u003e \u003cstrong\u003eMADE IN TAIWAN\u003c\/strong\u003e","brand":"ChinesePartsPro","offers":[{"title":"Default Title","offer_id":53556332527928,"sku":"202-82","price":15.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/8898\/6997\/files\/202-82.main.01.default__25784.1644351726.jpg?v=1792867170"},{"product_id":"gy6s-1200-1048-new-ncy-performance-super-cvt-transmission-kit-for-scooters-with-150cc-232cc-gy6-motors-type-2","title":"NCY PERFORMANCE SUPER CVT TRANSMISSION KIT FOR SCOOTERS WITH 150cc - 232cc GY6 MOTORS *TYPE 2*","description":"\u003cp\u003eNCY SUPER CVT TRANSMISSION KIT GEN 4 PLUS – GY6 125cc-232cc\u003c\/p\u003e \u003cp\u003eUpgrade your GY6 CVT with the NCY Super Transmission Kit Gen 4 Plus. This complete performance package combines NCY's variator, drive face, secondary slider, bearing spring seat, 1500 RPM compression spring, performance clutch, clutch bell and multiple roller weights into one matched transmission setup.\u003c\/p\u003e \u003cp\u003eDesigned to improve acceleration, throttle response, CVT operation and overall transmission performance on compatible GY6-powered scooters and other applications.\u003c\/p\u003e \u003cp\u003e100% NCY components. Made in Taiwan.\u003c\/p\u003e \u003cp\u003eKIT INCLUDES\u003c\/p\u003e \u003cp\u003e• NCY 114mm CNC-Machined Aluminum Drive Face\u003cbr\u003e• NCY 115mm Gold-Coated Performance Variator\u003cbr\u003e• NCY Secondary Slider \/ Torque Driver\u003cbr\u003e• NCY Secondary Bearing Spring Seat\u003cbr\u003e• NCY 1500 RPM Compression Spring\u003cbr\u003e• NCY Gen 4 Performance Clutch\u003cbr\u003e• NCY PTFE-Coated 10-Spoke Clutch Bell\u003cbr\u003e• 18x14mm Roller Weight Tuning Sets – 10g, 11g \u0026amp; 12g\u003cbr\u003e• Variator Slides\u003cbr\u003e• Secondary Slider O-Rings\u003cbr\u003e• Bearing Pack\u003c\/p\u003e \u003cp\u003eDRIVE FACE\u003c\/p\u003e \u003cp\u003e• CNC-machined aluminum\u003cbr\u003e• OD: 114mm\u003cbr\u003e• ID: 13.5mm\u003cbr\u003e• Splines: 19\u003cbr\u003e• Weight: Approx. 144.7g\u003cbr\u003e• Lightweight performance design\u003c\/p\u003e \u003cp\u003ePERFORMANCE VARIATOR\u003c\/p\u003e \u003cp\u003e• Gold-coated aluminum-alloy housing\u003cbr\u003e• OD: 115mm\u003cbr\u003e• ID: 24mm\u003cbr\u003e• Housing Height: 36mm\u003cbr\u003e• Variator Top: 87mm OD \/ 15mm ID \/ 24mm H\u003cbr\u003e• Includes variator slides\u003c\/p\u003e \u003cp\u003eROLLER WEIGHT TUNING KIT\u003c\/p\u003e \u003cp\u003e• Size: 18x14mm\u003cbr\u003e• 6 × 10g Rollers\u003cbr\u003e• 6 × 11g Rollers\u003cbr\u003e• 6 × 12g Rollers\u003c\/p\u003e \u003cp\u003eThree weight options allow the CVT setup to be tuned for the desired acceleration and RPM characteristics.\u003c\/p\u003e \u003cp\u003eSECONDARY SLIDER \/ TORQUE DRIVER\u003c\/p\u003e \u003cp\u003e• Slider Plate OD: Approx. 141.84mm\u003cbr\u003e• Funnel ID: 34mm\u003cbr\u003e• Funnel OD: 43mm\u003cbr\u003e• Funnel Height: 47mm\u003cbr\u003e• Dual-range design\u003cbr\u003e• 2 Pre-installed O-Rings\u003c\/p\u003e \u003cp\u003eSECONDARY BEARING SPRING SEAT\u003c\/p\u003e \u003cp\u003e• ID: 45.4mm\u003cbr\u003e• OD: 57.5mm\u003cbr\u003e• Height: 3mm\u003cbr\u003e• Groove: 1.75mm\u003cbr\u003e• Includes bearing pack\u003c\/p\u003e \u003cp\u003e1500 RPM COMPRESSION SPRING\u003c\/p\u003e \u003cp\u003e• Rating: 1500 RPM\u003cbr\u003e• Length: 154mm\u003cbr\u003e• ID: 48.5mm\u003cbr\u003e• OD: 58.2mm\u003cbr\u003e• Wire Gauge: 4.2mm\u003cbr\u003e• Yellow performance spring\u003c\/p\u003e \u003cp\u003eNCY GEN 4 PERFORMANCE CLUTCH\u003c\/p\u003e \u003cp\u003e• Clutch ID: 24.3-28mm\u003cbr\u003e• OD: 121.8mm\u003cbr\u003e• Height: 36.85mm\u003cbr\u003e• Large performance clutch shoes\u003cbr\u003e• 3 Performance Clutch Springs\u003cbr\u003e• 3 Clutch Weights\u003c\/p\u003e \u003cp\u003eNCY PERFORMANCE CLUTCH BELL\u003c\/p\u003e \u003cp\u003e• PTFE-Coated 10-Spoke Design\u003cbr\u003e• Clutch Bell ID: 125mm\u003cbr\u003e• OD: 137.34mm\u003cbr\u003e• Height: 43mm\u003cbr\u003e• 19 Splines\u003cbr\u003e• Weight: Approx. 680.39g\u003cbr\u003e• Vented design helps dissipate heat\u003c\/p\u003e \u003cp\u003eCOMMON FITMENT\u003c\/p\u003e \u003cp\u003eGenuine Scooter:\u003cbr\u003eBuddy 125 • Buddy 150 • Buddy 170i • Hooligan 170i • Blur 150\u003c\/p\u003e \u003cp\u003eGY6 Applications:\u003cbr\u003e125cc • 150cc • 170cc • 180cc • 200cc • Up to 232cc Modified Applications\u003c\/p\u003e \u003cp\u003eCommonly used on compatible GY6 scooters and select ATVs, go-karts and other powersports applications.\u003c\/p\u003e \u003cp\u003eCOMMON ENGINE CODES\u003c\/p\u003e \u003cp\u003e157QMJ • 152QMI • 161QMK • 1P61QMK\u003cbr\u003eYN1P57QMJ • 1P57QMJ • JJ157QMJ\u003cbr\u003eBN157QMJ • BN161QMK-A\u003cbr\u003e1P52FMI • 154FMI\u003cbr\u003eOther compatible QMI \/ QMJ applications\u003c\/p\u003e \u003cp\u003eIMPORTANT FITMENT NOTE – PLEASE READ\u003c\/p\u003e \u003cp\u003eThis kit DOES NOT fit every GY6-style engine.\u003c\/p\u003e \u003cp\u003eGO-KART OWNERS AND QMK ENGINE OWNERS SHOULD BUY WITH CAUTION.\u003c\/p\u003e \u003cp\u003eSome go-karts, ATVs, QMK engines and specialty GY6 applications use different CVT components, shaft dimensions, variator configurations or rear transmission components. Having \"GY6,\" \"QMK,\" \"QMJ,\" or a similar engine designation does NOT automatically guarantee fitment.\u003c\/p\u003e \u003cp\u003ePLEASE COMPARE YOUR ORIGINAL CVT COMPONENTS, SHAFTS, SPLINES AND DIMENSIONS WITH THE SPECIFICATIONS ABOVE BEFORE ORDERING.\u003c\/p\u003e \u003cp\u003ePOLARIS RZR 170 NOTE\u003c\/p\u003e \u003cp\u003eThis kit can be used with certain Polaris RZR 170 applications; however, modification may be required. On some RZR 170 models, the center hole of the NCY variator top plate must be enlarged to properly clear the variator shaft.\u003c\/p\u003e \u003cp\u003eNOT COMPATIBLE WITH\u003c\/p\u003e \u003cp\u003e• Honda PCX\u003cbr\u003e• Applications using incompatible CVT dimensions\u003cbr\u003e• Specialty GY6 \/ QMK configurations that do not match the listed specifications\u003c\/p\u003e \u003cp\u003eINSTALLATION NOTES\u003c\/p\u003e \u003cp\u003eA new, high-quality CVT drive belt is recommended when installing this kit.\u003c\/p\u003e \u003cp\u003eThe drive belt and belt-contact surfaces of the variator and drive faces MUST remain clean and dry. Do not apply grease to belt-contact surfaces.\u003c\/p\u003e \u003cp\u003eUse appropriate heat-resistant moly-graphite grease only on components requiring lubrication, such as:\u003c\/p\u003e \u003cp\u003e• Slider grooves\u003cbr\u003e• Slider pins\u003cbr\u003e• Bearing spring seat\u003cbr\u003e• Inner funnel \/ secondary slider areas\u003c\/p\u003e \u003cp\u003eREUSED ORIGINAL COMPONENTS\u003c\/p\u003e \u003cp\u003eInstallation requires reuse of certain original components, including:\u003c\/p\u003e \u003cp\u003e• Variator Boss\u003cbr\u003e• Washers\u003cbr\u003e• Rear Pulley Plate Shaft\u003cbr\u003e• Slider Pins\u003cbr\u003e• Slider Seat Funnel Cover\u003cbr\u003e• Clutch Nut\u003cbr\u003e• Variator \/ Related Nuts\u003c\/p\u003e \u003cp\u003eBASIC VARIATOR INSTALLATION\u003c\/p\u003e \u003cp\u003e1. Open the clutch\/rear pulley to create belt slack at the variator.\u003c\/p\u003e \u003cp\u003e2. Install the variator and drive face while keeping the belt away from the center boss so the drive face can fully seat.\u003c\/p\u003e \u003cp\u003e3. Verify the drive face and boss are properly seated. There should not be exposed splines between the properly seated components.\u003c\/p\u003e \u003cp\u003e4. Reinstall the original variator fan, washer and nut.\u003c\/p\u003e \u003cp\u003e5. Tighten to the proper torque specification for your specific vehicle. Always follow the vehicle manufacturer's service specifications.\u003c\/p\u003e \u003cp\u003eIMPORTANT\u003c\/p\u003e \u003cp\u003eCVT performance parts require proper installation and tuning. Roller weight selection, spring combination, belt condition and engine configuration can affect acceleration, RPM and top-speed characteristics.\u003c\/p\u003e \u003cp\u003eAlways verify fitment and installation requirements for your specific vehicle before installation.\u003c\/p\u003e \u003cp\u003eCONDITION\u003c\/p\u003e \u003cp\u003eBrand New\u003c\/p\u003e \u003cp\u003ePACKAGE CONTENTS\u003c\/p\u003e \u003cp\u003e• 1 × NCY CNC Aluminum Drive Face\u003cbr\u003e• 1 × NCY Gold-Coated Variator Assembly\u003cbr\u003e• 6 × 10g 18x14 Roller Weights\u003cbr\u003e• 6 × 11g 18x14 Roller Weights\u003cbr\u003e• 6 × 12g 18x14 Roller Weights\u003cbr\u003e• 3 × Variator Slides\u003cbr\u003e• 1 × NCY Secondary Slider\u003cbr\u003e• 2 × Secondary Slider O-Rings\u003cbr\u003e• 1 × NCY Bearing Spring Seat\u003cbr\u003e• 1 × Bearing Pack\u003cbr\u003e• 1 × NCY 1500 RPM Compression Spring\u003cbr\u003e• 1 × NCY Gen 4 Performance Clutch\u003cbr\u003e• 1 × NCY Performance Clutch Bell\u003c\/p\u003e \u003cp\u003eMade in Taiwan\u003c\/p\u003e","brand":"ChinesePartsPro","offers":[{"title":"Default Title","offer_id":53556332626232,"sku":"1200-1048 *NEW*","price":216.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/8898\/6997\/files\/1200-1048__48702.1624388183.jpg?v=1792867174"},{"product_id":"gy6s-1100-1324-final-drive-shaft-rear-axle-for-scooters-with-50cc-qmb139-motors","title":"FINAL DRIVE SHAFT REAR AXLE FOR SCOOTERS WITH 50cc QMB139 MOTORS","description":"\u003cstrong\u003eQMB139 REAR AXLE \/ OUTPUT SHAFT\u003c\/strong\u003e \u003ch2\u003e\u003cstrong\u003eFINAL DRIVE SHAFT • 133mm • 20-SPLINE\u003c\/strong\u003e\u003c\/h2\u003e \u003ch3\u003e\u003cstrong\u003eFOR QMB139 \/ 139QMB 50cc 4-STROKE SCOOTER ENGINES\u003c\/strong\u003e\u003c\/h3\u003e \u003cp\u003eRestore smooth, reliable power transfer to your rear wheel with this replacement rear axle, also known as the \u003cstrong\u003eoutput shaft\u003c\/strong\u003e or \u003cstrong\u003efinal drive shaft\u003c\/strong\u003e, for QMB139-based 50cc 4-stroke scooter engines. Precision machined for proper gear engagement, this shaft is designed to replace worn, bent, or damaged OEM output shafts found in many Chinese scooters.\u003c\/p\u003e \u003cp\u003eThis shaft features \u003cstrong\u003e20 splines on both ends\u003c\/strong\u003e for secure engagement with the final drive gears and rear wheel hub.\u003c\/p\u003e ⭐ FEATURES \u003cul\u003e \u003cli\u003eBrand New Replacement Rear Axle \/ Output Shaft\u003c\/li\u003e \u003cli\u003ePrecision Machined Steel Construction\u003c\/li\u003e \u003cli\u003eDirect Replacement for Many QMB139 Engines\u003c\/li\u003e \u003cli\u003e20 Splines on Both Ends\u003c\/li\u003e \u003cli\u003ePrecision Ground Bearing Surfaces\u003c\/li\u003e \u003cli\u003eDesigned for Smooth Power Transfer\u003c\/li\u003e \u003cli\u003eOEM-Style Replacement\u003c\/li\u003e \u003cli\u003eExcellent for Engine or Transmission Rebuilds\u003c\/li\u003e \u003cli\u003eHigh Strength Steel Construction\u003c\/li\u003e \u003cli\u003eDurable Heat-Treated Finish\u003c\/li\u003e \u003cli\u003eRestores Proper Final Drive Operation\u003c\/li\u003e \u003c\/ul\u003e PACKAGE INCLUDES \u003cp\u003e✔ Rear Output Shaft (Final Drive Shaft)\u003c\/p\u003e SPECIFICATIONS \u003ch3\u003eEngine Type\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eQMB139 \/ 139QMB\u003c\/li\u003e \u003cli\u003eAir-Cooled\u003c\/li\u003e \u003cli\u003eSingle Cylinder\u003c\/li\u003e \u003cli\u003e4-Stroke\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eOverall Length\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e133mm\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSplines\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e20 Splines (Both Ends)\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eCenter Shaft Diameter\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e27mm\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSmooth Bearing Surface\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e17mm\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eThread Diameter\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e16mm\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eMaterial\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eHeat-Treated Steel\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSKU\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\u003cstrong\u003e151-55\u003c\/strong\u003e\u003c\/li\u003e \u003c\/ul\u003e PERFORMANCE BENEFITS \u003cp\u003e✔ Restores Proper Final Drive Operation\u003c\/p\u003e \u003cp\u003e✔ Eliminates Worn or Damaged Splines\u003c\/p\u003e \u003cp\u003e✔ Smooth Power Transfer\u003c\/p\u003e \u003cp\u003e✔ Precision Gear Engagement\u003c\/p\u003e \u003cp\u003e✔ High Strength Construction\u003c\/p\u003e \u003cp\u003e✔ Long Service Life\u003c\/p\u003e \u003cp\u003e✔ Ideal for Transmission Rebuilds\u003c\/p\u003e \u003cp\u003e✔ OEM-Style Fit and Function\u003c\/p\u003e COMPATIBLE ENGINE CODES \u003cp\u003eDesigned for many engines including:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e139QMA\u003c\/li\u003e \u003cli\u003e139QMB\u003c\/li\u003e \u003cli\u003e1P39QMB\u003c\/li\u003e \u003cli\u003e1P39QMA-2\u003c\/li\u003e \u003cli\u003eYN139QMB\u003c\/li\u003e \u003cli\u003eJJ1P39QMB\u003c\/li\u003e \u003cli\u003e139FMA-2\u003c\/li\u003e \u003cli\u003eBD1P39QMB\u003c\/li\u003e \u003cli\u003eBN139QMB\u003c\/li\u003e \u003cli\u003e147QMD\u003c\/li\u003e \u003cli\u003eMost Other QMA Engine Variants\u003c\/li\u003e \u003cli\u003eMost Other QMB Engine Variants\u003c\/li\u003e \u003c\/ul\u003e COMMONLY FITS \u003cp\u003eThis shaft is commonly found in many \u003cstrong\u003eChinese-built 50cc 4-stroke scooters\u003c\/strong\u003e equipped with a \u003cstrong\u003e139QMB \/ QMB139 engine\u003c\/strong\u003e, including models from:\u003c\/p\u003e \u003ch3\u003eTaoTao\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eATM50-A1\u003c\/li\u003e \u003cli\u003eATM50-A1 Pony\u003c\/li\u003e \u003cli\u003eATM50-A1 Speedy\u003c\/li\u003e \u003cli\u003eThunder 50\u003c\/li\u003e \u003cli\u003eRacer 50\u003c\/li\u003e \u003cli\u003eLancer 50\u003c\/li\u003e \u003cli\u003eNew Speedy\u003c\/li\u003e \u003cli\u003eVIP 50\u003c\/li\u003e \u003cli\u003eQuantum 50\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eWolf Brand Scooters\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eIslander\u003c\/li\u003e \u003cli\u003eRugby\u003c\/li\u003e \u003cli\u003eJet II\u003c\/li\u003e \u003cli\u003eLucky\u003c\/li\u003e \u003cli\u003eBlaze 50 (QMB139 models)\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eIce Bear\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eRocket 50\u003c\/li\u003e \u003cli\u003eVision 50\u003c\/li\u003e \u003cli\u003eMaddog 50 (QMB139 versions)\u003c\/li\u003e \u003cli\u003ePST50 Models\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eJonway\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eYY50QT-6\u003c\/li\u003e \u003cli\u003eYY50QT-10\u003c\/li\u003e \u003cli\u003eYY50QT-21\u003c\/li\u003e \u003cli\u003eOther QMB139 Models\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eRoketa\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMaui 50\u003c\/li\u003e \u003cli\u003eSicily 50\u003c\/li\u003e \u003cli\u003eBahama 50\u003c\/li\u003e \u003cli\u003eFiji 50\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTank Sports\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eUrban Touring 50\u003c\/li\u003e \u003cli\u003eRacer 50\u003c\/li\u003e \u003cli\u003eVision 50\u003c\/li\u003e \u003cli\u003eTouring Deluxe\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003ePeace Sports\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSports 50\u003c\/li\u003e \u003cli\u003eRenegade 50\u003c\/li\u003e \u003cli\u003eTPGS Series\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eBMS\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eHeritage 50\u003c\/li\u003e \u003cli\u003eRoma 50\u003c\/li\u003e \u003cli\u003eMilano 50\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eBintelli\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eBreeze\u003c\/li\u003e \u003cli\u003eSprint\u003c\/li\u003e \u003cli\u003eScorch\u003c\/li\u003e \u003cli\u003eBolt\u003c\/li\u003e \u003cli\u003eBeast (QMB139 models)\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eZNEN\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eMany 50cc QMB139 Scooters\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSSR Motorsports\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e50cc QMB139 Scooters\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eChicago Scooter Company\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eGo\u003c\/li\u003e \u003cli\u003eGo MAX\u003c\/li\u003e \u003cli\u003eBella Classic 50\u003c\/li\u003e \u003cli\u003eNitro Sport 50\u003c\/li\u003e \u003cli\u003ePug 50\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSchwinn\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eHope\u003c\/li\u003e \u003cli\u003eNewport\u003c\/li\u003e \u003cli\u003eValo 50 (QMB139 models)\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eAlso Fits Many Other Brands Including\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDongfang\u003c\/li\u003e \u003cli\u003eJMStar\u003c\/li\u003e \u003cli\u003eSUNL\u003c\/li\u003e \u003cli\u003eEagle\u003c\/li\u003e \u003cli\u003eNST\u003c\/li\u003e \u003cli\u003ePuma\u003c\/li\u003e \u003cli\u003eRedcat\u003c\/li\u003e \u003cli\u003eKazuma\u003c\/li\u003e \u003cli\u003eLifan (QMB139 Models)\u003c\/li\u003e \u003cli\u003eGator\u003c\/li\u003e \u003cli\u003eBaja\u003c\/li\u003e \u003cli\u003eXingyue\u003c\/li\u003e \u003cli\u003eFlyscooters\u003c\/li\u003e \u003cli\u003eKeeway (QMB139 models)\u003c\/li\u003e \u003cli\u003eCPI (some models)\u003c\/li\u003e \u003cli\u003eNumerous Chinese scooters utilizing the \u003cstrong\u003e133mm, 20-spline output shaft\u003c\/strong\u003e\n\u003c\/li\u003e \u003c\/ul\u003e IMPORTANT FITMENT INFORMATION \u003cp\u003e⚠ \u003cstrong\u003ePlease measure your original output shaft before 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