{"product_id":"gy6s-1100-1248-ncy-big-bore-cylinder-kit-52mm-bore-88cc-for-qmb139-50cc-engines","title":"NCY BIG BORE CYLINDER KIT (52mm BORE, 88cc) FOR QMB139 50cc ENGINES","description":"\u003cstrong\u003e 52mm PERFORMANCE BIG BORE CYLINDER KIT BY NCY \u003c\/strong\u003e \u003cstrong\u003eFOR 50cc OR LARGER QMB139 ENGINES \u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003e 50cc QMB139 4-STROKE 52mm, RACING BIG BORE CYLINDER SET.\u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003e KIT INCLUDES CYLINDER, PISTON, \u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003eRINGS, PISTON PIN, CIR CLIPS, HEAD GASKET, AND BASE GASKET.\u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003eWHEN YOU USE THIS SSP-G 52mm BIG BORE CYLINDER SET IN CONJUNCTION WITH OUR 44MM STROKER CRANKSHAFT \u003c\/strong\u003e \u003cstrong\u003e(SEE RELATED ITEMS) YOU WILL INCREASE YOUR TOTAL DISPLACEMENT TO 93.4CC, ALMOST DOUBLING YOUR ORIGINAL DISPLACEMENT!!!\u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003eWE RECOMMEND THAT YOU USE OUR QMB139 PERFORMANCE CYLINDER HEAD WITH THIS SET AS SOME STOCK CYLINDER HEADS WILL NOT FIT. \u003c\/strong\u003e \u003cstrong\u003eUSE WITH AN UN-MODIFIED STOCK HEAD CAN CAUSE SERIOUS ENGINE DAMAGE. \u003c\/strong\u003e \u003cstrong\u003e*YOU MAY NEED TO MODIFY YOUR ENGINE CASE TO ACCOMMODATE THE LARGER CYLINDER.\u003c\/strong\u003e \u003cstrong\u003e \u003c\/strong\u003e \u003cstrong\u003eUPGRADES TO 87.9cc\u003c\/strong\u003e \u003cstrong\u003eCYLINDER BORE: 52mm\u003c\/strong\u003e \u003cstrong\u003eCYLINDER SLEEVE OUTER DIAMETER: 54.8mm \u003c\/strong\u003e \u003cstrong\u003eWRIST PIN DIAMETER: 13mm\u003c\/strong\u003e \u003cstrong\u003eTOTAL PISTON HEIGHT: 34.8mm\u003c\/strong\u003e \u003cstrong\u003eCOMPRESSION HEIGHT (FROM CENTER OF WRIST PIN HOLE TO TOP EDGE OF PISTON): 17.25mm\u003c\/strong\u003e","brand":"ChinesePartsPro","offers":[{"title":"Default Title","offer_id":53556430340408,"sku":"1100-1248","price":91.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/8898\/6997\/files\/s-l1600__41265.1624404411.jpg?v=1792868763","url":"https:\/\/www.chinesepartspro.com\/products\/gy6s-1100-1248-ncy-big-bore-cylinder-kit-52mm-bore-88cc-for-qmb139-50cc-engines","provider":"ChinesePartsPro","version":"1.0","type":"link"}