{"product_id":"wiseco-k541m815-professional-series-forged-honda-b18-piston-set-81-50-mm-bore","title":"Wiseco K541M815 Professional Series Forged Honda B18 Piston Set — 81.50 mm Bore","description":"Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco?s Professional Series.\nWiseco Honda B18 Piston Set, 81.50 mm Bore, 30.00 mm Compression Height, 0.8268 in. Pin Diameter, Sport Compact, Set of 4.\n\u003cul\u003e\n  \u003cli\u003eEngineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength\u003c\/li\u003e\n  \u003cli\u003ePrecision ring grooves, anti-detonation groove, and additional ring seal improving features\u003c\/li\u003e\n  \u003cli\u003eArmorGlide  Skirt Coating: seizure resistant, friction reduction, and quieter operation\u003c\/li\u003e\n  \u003cli\u003eDesigned and built to withstand heavy to severe duty performance applications\u003c\/li\u003e\n  \u003cli\u003eFully machined crown features\u003c\/li\u003e\n  \u003cli\u003eForced pin oiling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Wiseco K541M815 Professional Series forged piston set is engineered for high-performance racing applications, offering exceptional durability and precision. Crafted from 2618 aluminum in the USA, these pistons deliver enhanced tensile strength necessary for heavy to severe duty race builds. Each piston features a fully machined crown and precision ring grooves that ensure optimal sealing, improved combustion efficiency, and reduced blow-by. The anti-detonation groove and additional sealing features contribute to consistent performance under demanding conditions, making these pistons ideal for serious racers and builders.\u003cbr\u003eArmorGlide skirt coating significantly reduces friction, minimizes seizure risk, and provides quieter operation, while the forced pin oiling system ensures reliable lubrication for longevity. Designed specifically for Honda B18 engines, these pistons fit models such as the 2001 Acura Integra and earlier years, providing a reliable upgrade for performance enthusiasts. The set includes four pistons and premium rings, ready to withstand the rigors of competitive racing and high-performance driving. Whether rebuilding or customizing your engine, Wiseco's Professional Series pistons are engineered to push your limits and deliver consistent, race-ready power.\u003cbr\u003eNote: These pistons are not carb-approved and require carb acknowledgment, suitable for specialized performance applications rather than stock emissions compliance. Proper installation and tuning are recommended to maximize performance benefits and ensure engine reliability.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eEngineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision ring grooves and anti-detonation groove enhance sealing and combustion efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eArmorGlide skirt coating reduces friction, seizure risk, and noise during operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for heavy to severe duty performance applications in racing engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFully machined crown features for precise fit and compression\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForced pin oiling system ensures consistent lubrication and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1990 Acura Integra GS\u003cbr\u003e\n1990 Acura Integra LS\u003cbr\u003e\n1990 Acura Integra RS\u003cbr\u003e\n1991 Acura Integra GS\u003cbr\u003e\n1991 Acura Integra LS\u003cbr\u003e\n1991 Acura Integra RS\u003cbr\u003e\n1992 Acura Integra GS\u003cbr\u003e\n1992 Acura Integra LS\u003cbr\u003e\n1992 Acura Integra RS\u003cbr\u003e\n1993 Acura Integra GS\u003cbr\u003e\n1993 Acura Integra LS\u003cbr\u003e\n1993 Acura Integra RS\u003cbr\u003e\n1994 Acura Integra GS-R\u003cbr\u003e\n1994 Acura Integra LS\u003cbr\u003e\n1994 Acura Integra RS\u003cbr\u003e\n1995 Acura Integra GS-R\u003cbr\u003e\n1995 Acura Integra LS\u003cbr\u003e\n1995 Acura Integra RS\u003cbr\u003e\n1995 Acura Integra Special Edition\u003cbr\u003e\n1996 Acura Integra GS-R\u003cbr\u003e\n1996 Acura Integra LS\u003cbr\u003e\n1996 Acura Integra RS\u003cbr\u003e\n1996 Acura Integra Special Edition\u003cbr\u003e\n1997 Acura Integra GS\u003cbr\u003e\n1997 Acura Integra GS-R\u003cbr\u003e\n1997 Acura Integra LS\u003cbr\u003e\n1997 Acura Integra RS\u003cbr\u003e\n1997 Acura Integra Type R\u003cbr\u003e\n1998 Acura Integra GS\u003cbr\u003e\n1998 Acura Integra GS-R\u003cbr\u003e\n1998 Acura Integra LS\u003cbr\u003e\n1998 Acura Integra RS\u003cbr\u003e\n1998 Acura Integra Type R\u003cbr\u003e\n1999 Acura Integra GS\u003cbr\u003e\n1999 Acura Integra GS-R\u003cbr\u003e\n1999 Acura Integra LS\u003cbr\u003e\n2000 Acura Integra GS\u003cbr\u003e\n2000 Acura Integra GS-R\u003cbr\u003e\n2000 Acura Integra LS\u003cbr\u003e\n2000 Acura Integra Type R\u003cbr\u003e\n2001 Acura Integra GS\u003cbr\u003e\n2001 Acura Integra GS-R\u003cbr\u003e\n2001 Acura Integra LS\u003cbr\u003e\n2001 Acura Integra Type R\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":53602776547601,"sku":"K541M815","price":746.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/1a0d108df2347b70becff29f593b7282.jpg?v=1779953331","url":"https:\/\/shoprenegade.com\/products\/wiseco-k541m815-professional-series-forged-honda-b18-piston-set-81-50-mm-bore","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}