{"product_id":"wiseco-93-01-civic-si-b16a-professional-series-forged-piston-set-81-00-mm-bore","title":"Wiseco [93-01 Civic Si] B16A Professional Series Forged Piston Set - 81.00 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 B16A Piston Set, 81.00 mm Bore, 30.00 mm Compression Height, 0.827 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\u003eBuild a durable, high-performance B16A engine with the Wiseco Professional Series forged piston set. Designed for serious sport compact racing and heavy-duty performance applications, this four-piston set combines 2618 aluminum construction with precision machining and premium ring-sealing features.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFeature: Forged and machined in the USA from 2618 aluminum for improved tensile strength\u003c\/li\u003e\n  \u003cli\u003eFeature: Includes premium piston rings and ArmorGlide skirt coating for reduced friction and quieter operation\u003c\/li\u003e\n  \u003cli\u003eFeature: Designed for heavy to severe duty racing and performance applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWiseco part number K673M81AP is engineered for Honda B16A applications using an 81.00 mm bore, 30.00 mm compression height, and a 0.827-inch wrist pin diameter. The set includes four pistons, making it suitable for a complete four-cylinder piston upgrade. Each piston features a fully machined crown, precision ring grooves, an anti-detonation groove, and additional ring-sealing enhancements to support reliable performance under demanding operating conditions.\u003c\/p\u003e\n\u003cp\u003eForced pin oiling helps support wrist pin lubrication, while the ArmorGlide skirt coating is designed to improve seizure resistance, reduce friction, and help minimize piston noise. The Professional Series is intended for builders who require increased durability and race-focused construction rather than a standard replacement piston. This product is not CARB approved and may require acknowledgment of emissions-related restrictions before purchase. Verify engine specifications, bore requirements, compression height, pin diameter, and gasket compatibility with your build before installation. A 0.040-inch gasket is required for the application.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged and machined in the USA from 2618 aluminum for improved tensile strength\u003c\/li\u003e\n\u003cli\u003eProfessional Series design for heavy to severe duty racing and performance applications\u003c\/li\u003e\n\u003cli\u003e81.00 mm bore with 30.00 mm compression height\u003c\/li\u003e\n\u003cli\u003e0.827-inch wrist pin diameter\u003c\/li\u003e\n\u003cli\u003eSet of four pistons with premium rings\u003c\/li\u003e\n\u003cli\u003eArmorGlide skirt coating for seizure resistance, reduced friction, and quieter operation\u003c\/li\u003e\n\u003cli\u003ePrecision ring grooves and anti-detonation groove\u003c\/li\u003e\n\u003cli\u003eFully machined crown features\u003c\/li\u003e\n\u003cli\u003eForced pin oiling\u003c\/li\u003e\n\u003cli\u003eRequires a 0.040-inch gasket\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: automotive\u003cbr\u003e\nEpa: N\/A\u003cbr\u003e\nRegular Stock: t\u003cbr\u003e\nUnits Per Sku: 1","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":47259569881190,"sku":"wisK673M81AP","price":831.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/8703\/7237\/files\/10ceb4831f408b0a6b06be2b92795cfbL.jpg?v=1790186378","url":"https:\/\/jdmuscleusa.com\/products\/wiseco-93-01-civic-si-b16a-professional-series-forged-piston-set-81-00-mm-bore","provider":"JDMuscle","version":"1.0","type":"link"}