Wiseco K568M875 87.5mm 9.0:1 Pro Series Forged Piston Set Honda K24/Accord/CR-V

Engine Fitment

• Honda K24A1 (2002-2006 Honda CR-V, 2003-2008 Honda Element)
• Honda K24A2 (2003-2007 Honda Accord, 2004-2008 Acura TSX)
• Honda K24A4 (2002-2006 Honda CR-V)
• Honda K24A8 (2003-2007 Honda Accord)

Vehicle Fitment

• 2003-2007 Honda Accord (2.4L K24A2 / K24A8, 4-Cylinder, DX / LX / EX / SE / Value Package)
• 2002-2006 Honda CR-V (2.4L K24A1 / K24A4, EX / LX / SE)
• 2003-2011 Honda Element (2.4L K24A1, DX / EX / LX / SC)
• 2004-2008 Acura TSX (2.4L K24A2, Base)

Fitment Notes

• Set of 4 pistons -- covers all 4 cylinders
• 87.50mm bore -- requires cylinder boring or honing to fit; not a drop-in for stock bore
• Stock K24 bore is 87.00mm -- this set is +0.50mm oversize
• Not CARB legal -- not for use on pollution-controlled vehicles in California
• Tuning / ECU calibration recommended to match compression ratio change

Features

• Wiseco Professional Series -- heavy to severe duty race build specification
• 2618 aluminum alloy -- higher tensile strength vs. 4032 for boost, nitrous, and high-stress applications
• ArmorGlide skirt coating -- seizure resistance, friction reduction, quieter operation
• Fully machined crown features
• Precision ring grooves with anti-detonation groove
• Forced pin oiling
• Strutted forging design
• Engineered, forged, and machined in the USA

Specifications

• Series: Professional
• Bore diameter: 87.50mm
• Compression ratio: 9.0:1
• Piston volume: -9.00cc (dish)
• Compression height: 30.00mm
• Piston material: 2618 aluminum
• Skirt coating: ArmorGlide
• Forging type: Strutted
• Top ring thickness: 1.0mm
• Second ring thickness: 1.2mm
• Oil ring thickness: 2.8mm
• Wrist pin OD: 0.866 in. (22mm)
• Wrist pin material: 5115 chromoly steel
• Quantity: 4 pistons
• Ring set: Included
• Wrist pins: Included
• Spirolox retainers: Included
• CARB approved: No

Included Components

• 4x Wiseco forged pistons (87.50mm)
• 4x Ring sets (1.0 / 1.2 / 2.8mm)
• 4x 5115 chromoly wrist pins
• 8x Spirolox retainers

Product Description

The Wiseco K568M875 is a Professional Series set of four forged pistons for the Honda K24A platform, sized at 87.50mm -- a +0.50mm overbore over the factory K24 dimension. Professional Series is Wiseco's highest-tier automotive piston line, built from 2618 aluminum rather than the 4032 alloy used in their Sport Compact series. The distinction matters for high-stress builds: 2618 runs slightly higher thermal expansion and requires more piston-to-wall clearance, but handles the fatigue and impact loads of boosted, nitrous, and high-RPM builds significantly better than 4032, which is better suited to naturally aspirated street applications.

At 9.0:1 compression with a -9.00cc dish, this set is designed for forced induction applications where a lower compression ratio is needed to accommodate boost pressure. The ArmorGlide skirt coating reduces friction and seizure risk, forced pin oiling keeps the wrist pins lubricated under high loads, and precision anti-detonation ring grooves improve ring seal. Fits K24A1, K24A2, K24A4, and K24A8 engines as found in the 2003-2011 Honda Element, 2002-2006 CR-V, 2003-2007 Accord, and 2004-2008 Acura TSX. Installation requires machining the block to 87.50mm. Engineered, forged, and machined in the USA. Not CARB legal.