Engines and Components› Pistons and Piston Rings

JE Pistons

BBC BIG CHF 3815 HEAD +15.6CC (6420

$1,276.96

SKU: J001 K420B8

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In Stock
Ships by Jun 8
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Non-Returnable Item
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Description

The JE Pistons K420B8 are a set of four forged pistons designed for high-performance Honda K-Series K20A2 and K20A3 engines. These pistons feature an 86.5mm bore size, 0.50 oversize, and an 11.7:1 compression ratio with a 9.0 dome volume, making them suitable for demanding engine builds.

Fitment

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

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Specifications

BrandJE Pistons
Part NumberJ001 K420B8

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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