{"product_id":"gy6s-1200-1253-ncy-bearing-spring-seat-50cc-139qmb-dio-elite-50","title":"NCY BEARING SPRING SEAT - 50cc 139QMB, DIO, ELITE 50","description":"\u003ch2\u003eEliminate Spring Bind: NCY Performance Bearing Spring Seat\u003c\/h2\u003e \u003cp\u003eUpgrade your CVT's efficiency with the NCY Bearing Spring Seat. Standard spring seats allow the torque spring to twist and bind against the clutch pulleys, leading to inconsistent shifting and \"dead spots\" in acceleration. This NCY upgrade uses a dedicated ball-bearing track to allow the spring to rotate freely, ensuring smooth, linear power delivery.\u003c\/p\u003e \u003ch3\u003ePerformance Benefits\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eConsistent Shifting: Prevents the torque spring from binding, allowing for smoother \"back-shifting\" when climbing hills or decelerating.\u003c\/li\u003e \u003cli\u003eReduced Friction: The integrated ball bearing race eliminates metal-on-metal torsion, extending the life of your torque spring.\u003c\/li\u003e \u003cli\u003eImproved Throttle Response: By allowing the CVT to transition through gear ratios without resistance, you get snappier acceleration out of corners.\u003c\/li\u003e \u003cli\u003eUniversal Tuning: Compatible with both stock and aftermarket performance torque springs.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eDesign: Needle\/Ball Bearing sandwich plate.\u003c\/li\u003e \u003cli\u003eConstruction: High-tensile steel races for maximum durability under high heat.\u003c\/li\u003e \u003cli\u003eCompatibility: Designed for 50cc 4-stroke (QMB139) and 2-stroke (Dio\/Elite) clutch assemblies.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eConfirmed Vehicle Fitment\u003c\/h3\u003e \u003cp\u003eThis bearing seat is a direct fit for most 50cc scooters with a 107mm or smaller clutch diameter:\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eEngine \/ Model\u003c\/th\u003e \u003cth\u003eFitment Details\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e139QMB \/ QMB139\u003c\/td\u003e \u003ctd\u003eAll Chinese 50cc 4-Stroke Scooters (TaoTao, Wolf, etc.)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHonda Dio \/ Elite 50\u003c\/td\u003e \u003ctd\u003eAF16, AF18, and AF25 Engines\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eKymco \/ SYM 50cc\u003c\/td\u003e \u003ctd\u003eZX50, Agility 50, Fiddle 50\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e \u003c\/p\u003e Mechanic's Note: This is one of the \"secret\" mods for the 139QMB engine. It makes a noticeable difference in how the bike reacts to throttle inputs, especially when paired with a 1000 RPM or 1500 RPM torque spring. Ensure the bearing is lightly greased with high-temp CVT grease during installation.","brand":"ChinesePartsPro","offers":[{"title":"Default Title","offer_id":53556435190072,"sku":"1200-1253","price":13.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/8898\/6997\/files\/1200-1253_96a4b96a-0feb-43fc-8a5e-10eb27fc63b6.jpg__00325.1776807867.jpg?v=1792868927","url":"https:\/\/www.chinesepartspro.com\/products\/gy6s-1200-1253-ncy-bearing-spring-seat-50cc-139qmb-dio-elite-50","provider":"ChinesePartsPro","version":"1.0","type":"link"}