{"product_id":"wiseco-39-50-mm-3950xz-piston-kit-model-4798m03950","title":"Wiseco 39.50 mm 3950XZ Piston Kit, Model 4798M03950","description":"The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes.  Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for.\nWiseco 4 Stroke Forged Series Piston Kit, 39.50 mm Bore, 11:1 CR\n\u003cul\u003e\n  \u003cli\u003eImproved tensile strength of forged material optimizes strength and service life\u003c\/li\u003e\n  \u003cli\u003eDesigned and built for each specific 4-stroke powersports engine\u003c\/li\u003e\n  \u003cli\u003eDedicated forgings allow for optimized strength-to-weight ratio\u003c\/li\u003e\n  \u003cli\u003eIncludes high-quality piston rings, wrist pin(s), and circlips\u003c\/li\u003e\n  \u003cli\u003eEngineered, forged, and machined in the USA in Mentor, OH\u003c\/li\u003e\n  \u003cli\u003e39.50 mm Bore, 11:1 CR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Wiseco 4-Stroke Forged Series Piston Kit is designed for specific 4-stroke powersports engine applications. This kit features a 39.50 mm bore and an 11:1 compression ratio, with forged construction engineered to provide improved tensile strength, performance, and service life.\u003c\/p\u003e\u003cp\u003eWiseco part number 4798M03950 and manufacturer part number 3950XZ. The kit includes high-quality piston rings, wrist pin(s), and circlips. It fits 1988, 1989, and 1991–1998 Honda Z50R models, according to the provided fitment information. The product data also identifies fitment with Honda XR50 and CRF50F model applications, but no specific year-by-year fitment details were provided for those models.\u003c\/p\u003e\u003cp\u003eThe piston is engineered, forged, and machined in the USA in Mentor, Ohio. Verify engine application and fitment before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBore: 39.50 mm\u003c\/li\u003e\n\u003cli\u003eCompression ratio: 11:1\u003c\/li\u003e\n\u003cli\u003eForged construction improves tensile strength and supports service life\u003c\/li\u003e\n\u003cli\u003eDesigned and built for specific 4-stroke powersports engine applications\u003c\/li\u003e\n\u003cli\u003eDedicated forging optimizes the strength-to-weight ratio\u003c\/li\u003e\n\u003cli\u003eIncludes high-quality piston rings, wrist pin(s), and circlips\u003c\/li\u003e\n\u003cli\u003eEngineered, forged, and machined in the USA in Mentor, Ohio\u003c\/li\u003e\n\u003cli\u003eFits 1988, 1989, and 1991–1998 Honda Z50R models according to the provided fitment data\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cbr\u003e\n\u003cbr\u003e\nAir Freight Prohibited: false\u003cbr\u003e\nNot Carb Approved: true\u003cbr\u003e\nCarb Acknowledgement Required: true\u003cbr\u003e\nLtl Freight Required: false\u003cbr\u003e\nProp 65: Y\u003cbr\u003e\nPart Type: powersports\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nClearance Item: t\u003cbr\u003e\nRegular Stock: false\u003cbr\u003e\nUnits Per Sku: 1\u003cbr\u003e\nFitment:\u003cbr\u003e\n1988 Honda Z50R Base\u003cbr\u003e\n1989 Honda Z50R Base\u003cbr\u003e\n1991 Honda Z50R Base\u003cbr\u003e\n1992 Honda Z50R Base\u003cbr\u003e\n1993 Honda Z50R Base\u003cbr\u003e\n1994 Honda Z50R Base\u003cbr\u003e\n1995 Honda Z50R Base\u003cbr\u003e\n1996 Honda Z50R Base\u003cbr\u003e\n1997 Honda Z50R Base\u003cbr\u003e\n1998 Honda Z50R Base\u003cbr\u003e\n1999 Honda Z50R Base\u003cbr\u003e\n2000 Honda XR50R Base\u003cbr\u003e\n2001 Honda XR50R Base\u003cbr\u003e\n2002 Honda XR50R Base\u003cbr\u003e\n2003 Honda XR50R Base\u003cbr\u003e\n2004 Honda CRF50F Base\u003cbr\u003e\n2005 Honda CRF50F Base\u003cbr\u003e\n2006 Honda CRF50F Base\u003cbr\u003e\n2007 Honda CRF50F Base\u003cbr\u003e\n2008 Honda CRF50F Base\u003cbr\u003e\n2009 Honda CRF50F Base\u003cbr\u003e\n2011 Honda CRF50F Base\u003cbr\u003e\n2012 Honda CRF50F Base\u003cbr\u003e\n2013 Honda CRF50F Base","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":68300490637547,"sku":"589660","price":131.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/a76f34294f678d4fd5658e8f46cc3edd_77ab51bf-dc9e-4b5e-9b7d-993912b206c2.jpg?v=1793226784","url":"https:\/\/ctracingservices.com\/products\/wiseco-39-50-mm-3950xz-piston-kit-model-4798m03950","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}