Exterior Components› Body Panels and Components

United Engine & Machine Co

7000 CHEVROLET 454 ROD 6.135 OC HOLLOW DOME 26CC 1V KB HYPER PISTON SET

$79.13

SKU: U00B KB207.100

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

Advanced — 4+ hours

Description

The United Engine & Machine Co KB207.100 is a set of eight hypereutectic pistons designed for performance applications. These pistons feature a dome style with a single valve relief and are constructed from a 390 aluminum alloy with 16 percent silicon for tighter running clearances.

Key specifications include a 4.350-inch bore size, a 4.000-inch crankshaft stroke, and a 6.135-inch rod length. The compression height is 1.645 inches, with a piston head volume of -26.00cc and a compression ratio of 10.2:1 with 119cc heads. The wrist pin size is 0.990 inches, and the piston rings are 1/16 x 1/16 x 3/16. They include 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 KB207.100

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