Wiseco K541M815 Professional Series Forged Honda B18 Piston Set — 81.50 mm Bore

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. Wiseco Honda B18 Piston Set, 81.50 mm Bore, 30.00 mm Compression Height, 0.8268 in. Pin Diameter, Sport Compact, Set of 4.

• Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
• Precision ring grooves, anti-detonation groove, and additional ring seal improving features
• ArmorGlide Skirt Coating: seizure resistant, friction reduction, and quieter operation
• Designed and built to withstand heavy to severe duty performance applications
• Fully machined crown features
• Forced pin oiling

The 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.
ArmorGlide 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.
Note: 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.

Features:

• Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength

• Precision ring grooves and anti-detonation groove enhance sealing and combustion efficiency

• ArmorGlide skirt coating reduces friction, seizure risk, and noise during operation

• Designed for heavy to severe duty performance applications in racing engines

• Fully machined crown features for precise fit and compression

• Forced pin oiling system ensures consistent lubrication and durability

Fitment:
1990 Acura Integra GS
1990 Acura Integra LS
1990 Acura Integra RS
1991 Acura Integra GS
1991 Acura Integra LS
1991 Acura Integra RS
1992 Acura Integra GS
1992 Acura Integra LS
1992 Acura Integra RS
1993 Acura Integra GS
1993 Acura Integra LS
1993 Acura Integra RS
1994 Acura Integra GS-R
1994 Acura Integra LS
1994 Acura Integra RS
1995 Acura Integra GS-R
1995 Acura Integra LS
1995 Acura Integra RS
1995 Acura Integra Special Edition
1996 Acura Integra GS-R
1996 Acura Integra LS
1996 Acura Integra RS
1996 Acura Integra Special Edition
1997 Acura Integra GS
1997 Acura Integra GS-R
1997 Acura Integra LS
1997 Acura Integra RS
1997 Acura Integra Type R
1998 Acura Integra GS
1998 Acura Integra GS-R
1998 Acura Integra LS
1998 Acura Integra RS
1998 Acura Integra Type R
1999 Acura Integra GS
1999 Acura Integra GS-R
1999 Acura Integra LS
2000 Acura Integra GS
2000 Acura Integra GS-R
2000 Acura Integra LS
2000 Acura Integra Type R
2001 Acura Integra GS
2001 Acura Integra GS-R
2001 Acura Integra LS
2001 Acura Integra Type R

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1