Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

1 SET IC9960.040/1 SET 4151FM8.040

$932.92

SKU: U00B IC9960KTM.040

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

Moderate — 2–4 hours

Description

Icon FHR (Formed Head Relief) pistons are designed for performance on a budget. Made from 11% silicon and 4032 aluminum, they allow for tighter piston-to-wall clearance, reduced friction, and extended piston life. Key features include mini grooves, CNC-machined skirts, die-formed relief valves, an accumulator groove, and included wrist pins and spiral locks.

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

BrandUnited Engine & Machine Co
Part NumberU00B IC9960KTM.040

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