Wiseco K622M875 Forged Piston Kit for 2003-2011 Honda / Acura K24 (K-Series)

Vehicle Fitment

• Honda K24 engine block with K20-series head
• Common vehicles: 2003-2007 Honda Accord, 2002-2006 CR-V, 2004-2008 Acura TSX, 2003-2011 Honda Element

Features

• Forged 2618 aluminum for superior strength
• ArmorGlide® low-friction skirt coating
• Dished crown (-21 cc) for reduced compression
• Strutted forging design for increased rigidity
• Precision ring grooves and anti-detonation design
• Forced pin-oiling for reliable lubrication under high load
• Optimized for sport-compact and performance builds
• Includes high-performance ring set (8750XX)

Specifications

• Bore: 87.50 mm
• Compression Height: 30.00 mm
• Piston Dish Volume: -21.00 cc
• Compression Ratio: ~8.8:1
• Wrist Pin Diameter: 22 mm
• Piston Material: 2618 forged aluminum
• Set Quantity: 4 pistons
• Nominal Piston Weight: ~320 g

Included Components

• 4x forged pistons
• 4x 22 mm wrist pins
• 1x performance ring set (8750XX)
• Circlips / wrist-pin retainers

Product Description

The Wiseco K622M875 is a performance-grade piston kit designed for Honda/Acura K24 engines when paired with K20-series heads. Constructed from high-strength 2618 alloy, these forged pistons deliver excellent durability for high-RPM and tuned applications. The -21 cc dished design supports a lower compression ratio (~8.8:1), making them suited for performance builds or mild forced induction.

ArmorGlide® coating on the skirts reduces friction and wear, while the strutted forging increases rigidity under load. Forced pin-oiling ensures consistent lubrication to the wrist pins in demanding conditions. The precision ring grooves, combined with the included 8750XX ring set, ensure reliable sealing and long-term performance.

Ideal for tuners building race or street K-series engines, this kit provides a robust foundation for upgrades or rebuilds. For optimal reliability, proper installation steps - including checking ring gaps, clearances, and torque specifications - are essential.