Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco Mitsu Evo 4-9 HD2 Asymmetric Skirt Gas Ported Bore 85.50mm - Size +.020 - CR 10.5 Piston Set

$958.99

SKU: W00C K669M855AP

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

Professional series forged racing pistons for 1996-2006 Mitsubishi Evo 4-9 with 4G63/4G64 engines. Features valve pocket designs for maximum flow, optimizing oversized valves and high-lift cams. Piston crown shapes promote intake charge efficiency and squish/quench during compression, resisting detonation and pre-ignition for longer engine life and increased horsepower. Precision machined ring grooves and complex skirt profiles reduce friction, maximize ring seal, and minimize blow-by and oil consumption.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWiseco
Part NumberW00C K669M855AP

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy