{"product_id":"ssp-g-50mm-qmb139-performance-cylinder-kit-169-54","title":"SSP-G 50mm QMB139 Performance Cylinder Kit","description":"\u003cp\u003eSSP-G 50cc QMB139 4-stroke 50mm, Racing Big Bore Cylinder Set. Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, and base gasket. \n\n\u003cbr\u003e \n\n\u003cbr\u003e \n\nPerformance items are not returnable.  \n\n\u003cbr\u003e \n\n\u003cbr\u003e \n\n  \n\n\u003c\/p\u003e\u003cp style=\"MARGIN: 0in 0in 0pt; FONT-FAMILY: Tahoma; COLOR: rgb(0,0,0); FONT-SIZE: 12pt\" class=\"MsoNormal\"\u003e \n\n  \u003cspan style=\"FONT-FAMILY: Tahoma; COLOR: black; FONT-SIZE: 10pt\"\u003e\u003cfont color=\"#000000\" size=\"2\"\u003e\u003cfont color=\"#0000ff\" size=\"3\"\u003e\u003cfont color=\"#ff0000\"\u003eWe recommend that you use our QMB139 performance cylinder head (see Related Items) with this set as so\u003c\/font\u003e\u003cfont color=\"#ff0000\"\u003eme stock cylinder heads will not fit. Use with an un-modified stock head can cause serious engine damage.\u003c\/font\u003e\u003c\/font\u003e\u003c\/font\u003e\u003c\/span\u003e    \n\n\u003c\/p\u003e \n\n\u003cp style=\"MARGIN: 0in 0in 0pt; FONT-FAMILY: Tahoma; COLOR: rgb(0,0,0); FONT-SIZE: 12pt\" class=\"MsoNormal\"\u003e \n\n  \u003cspan style=\"FONT-FAMILY: Tahoma; COLOR: black; FONT-SIZE: 10pt\"\u003e\u003cfont color=\"#000000\" size=\"2\"\u003e\u003cfont color=\"#0000ff\" size=\"3\"\u003e\u003cfont color=\"#ff0000\"\u003e*You may need to modify your engine case to accommodate the larger cylinder.\u003c\/font\u003e\u003c\/font\u003e\u003c\/font\u003e\u003c\/span\u003e \n\n\u003c\/p\u003e\u003cspan style=\"FONT-FAMILY: Tahoma; COLOR: black; FONT-SIZE: 10pt\"\u003e\u003cfont color=\"#000000\" size=\"2\"\u003e\u003cfont color=\"#ff0000\"\u003eWe recommend that you use our QMB139 performance cylinder head (see Related Items) with this set as so\u003cfont color=\"#ff0000\"\u003eme stock cylinder heads will not fit.\u003c\/font\u003e\u003c\/font\u003e\u003c\/font\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"FONT-FAMILY: Tahoma; COLOR: black; FONT-SIZE: 10pt\"\u003e\u003c\/span\u003e \n\n\u003cul\u003e \n\n\u003cli\u003eUpgrades to 80cc  \n\n\u003c\/li\u003e\n\u003cli\u003eCylinder Bore: 50mm \n\n\u003c\/li\u003e\n\u003cli\u003eCylinder  Sleeve Outer Diameter: 54.9mm   \n\n\u003c\/li\u003e\n\u003cli\u003eWrist Pin Diameter: 13mm  \n\n\u003c\/li\u003e\n\u003cli\u003eTotal Piston Height: 34.8mm  \n\n\u003c\/li\u003e\n\u003cli\u003eCompression Height (from center of wrist pin hole to top edge of piston): 18.3mm\u003c\/li\u003e\n\u003c\/ul\u003eBaja SC50-P, Jalon X8 Retro 50cc, Lifan, Panterra Fusion 50cc, Qingqi QM50QT-4G, Qingqi QM50QT-6V, SUNL, Schwinn, Strada, Various unlisted makes\/models","brand":"SSP-G","offers":[{"title":"Default Title","offer_id":49985996947736,"sku":"169-54","price":121.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/files\/452040.jpg?v=1744827536","url":"https:\/\/www.scooterworks.com\/products\/ssp-g-50mm-qmb139-performance-cylinder-kit-169-54","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}