Wiseco Honda K-Series +10.5cc Dome 1.181x86.5mm Piston Shelf Stock

The Wiseco 6650M865 is a Professional Series forged piston engineered for Honda K-Series engines. It features a +10.5cc dome crown, an 86.5mm bore, and a 1.181-inch (30mm) compression height. This piston is designed to support high compression, forced induction, and high-RPM race builds on K20A and compatible K-Series platforms.

Wiseco's Professional Series offers their highest tier of performance piston construction, built for serious racers and engine builders. The dome profile is ideal for naturally aspirated builds aiming for maximum power output. Key features include 2618 forged aluminum construction for superior strength and resilience, ArmorGlide® skirt coating to reduce friction and noise, and a fully machined crown for precision ring grooves and enhanced seal technology.