Engines and Components› Pistons and Piston Rings

CP Pistons

CP Piston & Ring Set for Acura/Honda K20A/A2/A3 - Bore (86.5mm) - Size (+0.5mm) - Compression Ratio

$766.50

SKU: C00A SC70456-4

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Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

These CP Pistons are forged flat-top pistons with a 3.406-inch (86.50mm) bore and a 9.5:1 compression ratio, designed for Honda/Acura K20 series engines. They feature deep valve reliefs to accommodate high-lift camshafts and larger +1mm valve sizes. The pistons are made from high-strength aluminum forgings, are fully CNC machined and balanced to +/-1 gram, and include high-performance rings, wrist pins, and wrist pin retainers. They are suitable for turbo, supercharger, and nitrous applications.

Fitment

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Specifications

BrandCP Pistons
Part NumberC00A SC70456-4

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.

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