Engines and Components› Pistons and Piston Rings

JE Pistons

BBC 20'' -4.610/.990/18CC

$252.49

SKU: J001 377890S

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

Advanced — 4+ hours

Description

The JE Pistons 377890S is a set of forged pistons designed for high-performance applications. Constructed from 2618-T6 aluminum, these pistons feature a dome head type and a bore size of 4.610 inches.

These pistons are designed for use with Dart 20-degree Pro 1 (97cc chamber) and Brodix SR20 (95cc chamber) heads. They include features such as accumulator grooves, double pin oilers, and radius dome with fire slots for improved flame travel and combustion.

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

BrandJE Pistons
Part NumberJ001 377890S

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