Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

KB HYP PISTON KIT SBC 350

$602.56

SKU: U00B KB171KTD.040

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

KB Performance Hyper piston and ring kits are cast from 390 hypereutectic alloy heat-treated to T-6 standards to make them stronger. They feature fully machined crowns and valve pockets, are lightweight to improve throttle response, and are strong enough to withstand high compression and high temperatures. This kit includes piston rings, 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 KB171KTD.040

Videos

Good or Junk? Summit Parts Review @SummitRacing

Good or Junk? Summit Parts Review @SummitRacing
Small Block Chevy Engine Build: Piston Assembly (Part 1)

Small Block Chevy Engine Build: Piston Assembly (Part 1)

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