Wiseco 6650M87 Honda K-Series 87.0mm Forged Piston Set 10.5cc Dome

The Wiseco 6650M87 is a forged performance piston designed for Honda K-Series engines, featuring an 87.0mm bore diameter and a 10.5cc dome for increased compression. Wiseco pistons are manufactured using a high-strength forged aluminum alloy and are engineered to withstand the demands of high-performance and forced-induction applications.

Key Features:

• Bore Diameter: 87.0mm (1.181" ring groove)
• Dome Volume: 10.5cc positive dome — increases static compression ratio
• Ring Groove Width: 1.181" (top ring groove specification)
• Application: Honda K-Series engine family (K20, K24, and variants)
• Forged from high-strength aluminum alloy for superior strength-to-weight ratio
• ArmorGlide® skirt coating reduces friction and improves wear resistance
• Precision CNC-machined for exacting tolerances and consistent fitment
• Designed for high-performance street, track, and competition builds

Wiseco's 6650M87 pistons are ideal for engine builders looking to increase compression on Honda K-Series platforms. The positive dome design raises the compression ratio, making this piston well-suited for naturally aspirated high-revving builds where maximum cylinder pressure and power output are priorities.