Product Details
| Part Number: | K541M81AP |
| Brand: | Wiseco |
| Bore: | 81mm |
| Compression Ratio: | 8.2:1 |
| Includes Piston Rings: | Yes |
| CARB Approved: | No |
The Wiseco Professional Series Honda B18 forged racing piston set is engineered for high-performance racing applications, offering exceptional durability and precision. Crafted from 2618 aluminum in the USA, these pistons deliver increased tensile strength necessary for demanding race environments. The set includes four pistons designed to optimize engine power and reliability in sport compact vehicles, with a bore diameter of 81mm and a compression height of 30mm. Each piston features a fully machined crown for precise compression and combustion efficiency, along with a force-fed pin oiling system to ensure reliable lubrication during intense driving conditions. The pistons are equipped with precision ring grooves, an anti-detonation groove, and advanced ring seal features to maximize sealing and minimize blow-by, contributing to improved engine performance and longevity. The ArmorGlide skirt coating reduces friction, suppresses seizure risks, and ensures quieter operation, making it suitable for severe duty applications. Built for racers and serious builders, these pistons are designed to withstand heavy-duty performance demands while maintaining optimal engine efficiency. The set is shipped fully assembled with premium rings, ready to install in your engine rebuild or upgrade project, providing an excellent balance of power, durability, and racing performance.
Features:
- 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 for seizure resistance, friction reduction, and quieter operation
- Designed and built for heavy to severe duty racing and performance applications
- Fully machined crown for precise compression and combustion efficiency
- Forced pin oiling system for reliable lubrication during high-performance use
- Product Type: Engine Piston Set
- Product Series: Professional
- Bore Diameter: 81.00 MM
- Compression Height: 30.00 MM
- Piston Volume: -12.00 CC
- Piston Material: 2618
- Skirt Coating: Yes
- Forging Type: Strutted
- Piston Quantity: 4
- Ring Set Included: Yes
- Top Compression Ring Thickness: 1.0 MM
- Second Compression Ring Thickness: 1.2 MM
- Oil Ring Thickness: 2.8 MM
- Wrist Pin Included: Yes
- Wrist Pin Material: 5115
- Wrist Pin Outer Diameter: 0.827 IN
- Engine Detail: Honda B18
- Product Market: Sport Compact
Not legal for sale or use in California on any pollution controlled motor vehicles. See http://www.semasan.com/emissions for state by state emissions requirements.
There is a 5% cancellation fee if you order this product and want to ship it to the state of California.
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 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 |
Engine Fitment
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