Wiseco Professional Series F-TOP Forged Piston Kit for Honda Turbo, 81.0mm Bore, 1.176 CH (K542M81)

Engineered for high-output Honda Turbo applications, this Wiseco Professional Series forged piston kit is built to handle the thermal and mechanical stresses of severe-duty racing. These pistons are machined in the USA from 2618 aluminum alloy, providing the high tensile strength necessary for turbocharged builds where cylinder pressures are extreme.

Every piston in the K542M81 kit features Wiseco’s proprietary ArmorGlide skirt coating, which significantly reduces friction and prevents seizure while ensuring quieter operation. The design incorporates forced pin oiling for superior lubrication at the wrist pin and anti-detonation grooves to protect the ring land area. With precision-machined ring grooves and fully machined crowns, this kit provides the reliable seal and flame travel required for professional-level engine builds.

• Bore Size: 81.0mm
• Compression Height: 1.176
• Material: 2618 Forged Aluminum
• Skirt Coating: ArmorGlide friction-reduction technology
• Piston Style: F-TOP
• Features: Forced pin oiling, anti-detonation grooves, and precision ring grooves
• Included: Premium piston rings and high-strength wrist pins
• Manufacturer Part Number: K542M81