Wiseco Professional Series Forged Flat Top Piston Kit 1.181x87.5mm for Select 2002-2011 Acura/Honda (K20/K24) K631M875

Fits select 2002-2011 Acura RSX and TSX, and Honda Accord, CR-V, and Element (K20/K24).

The Wiseco Professional Series forged racing piston kit is engineered for serious builders and high-duty racing applications. Machined in the USA from high-tensile 2618 aluminum alloy, these flat top pistons provide the strength required for forced induction or high-compression K-series builds. Each piston features a 1.181-inch compression height and 87.5mm bore with precision-machined ring grooves for an optimal seal.

To ensure long-term reliability and performance, these pistons are finished with Wiseco's proprietary ArmorGlide skirt coating, which reduces friction and prevents seizure in extreme conditions. Integrated forced pin oiling and anti-detonation grooves help manage thermal loads and maintain ring integrity under severe duty.

• Material: Forged 2618 aluminum alloy
• Piston Type: Flat Top
• Bore Size: 87.5mm
• Compression Height: 1.181 in
• Skirt Coating: ArmorGlide friction reduction
• Features: Forced pin oiling, anti-detonation grooves, and fully machined crowns
• Included: Premium piston rings and forged pistons
• Manufacturer Part Number: K631M875