Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

KB HYP PISTON KIT FORD 408W

$621.00

SKU: U00B KB320KTM.040

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

Professional / shop required

Description

Keith Black Hypereutectic pistons are a great choice for high performance marine, drag race, circle track, street or towing application builds. The low expansion 390 alloy with 16 percent silicon allows for a tighter piston to wall running clearance. Features include fully machined head and valve reliefs, triple spiral lock rings, CNC machined pin bores, accumulator groove, machined in oil returns, diamond finished skirts, and mini grooves to reduce scuffing and overheating. Wrist pins and spiral lock included. Rings (1/16 x 1/16 x 3/16) are not included.

Fitment

Fitment Guaranteed

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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 KB320KTM.040

Videos

Ford Power - 408W Stroker Engine Build

Ford Power - 408W Stroker Engine Build
HOW TO: BIG HP 408 STROKER FORD!

HOW TO: BIG HP 408 STROKER FORD!
Modern 410ci Stroker Windsor with Custom EFI & Coil-Near-Plug Conversion - Engine Power S9, E14 & 15

Modern 410ci Stroker Windsor with Custom EFI & Coil-Near-Plug Conversion - Engine Power S9, E14 & 15
408W engine overview 351W based

408W engine overview 351W based
351W Stroker - Recommended Parts

351W Stroker - Recommended Parts
The Truth: Cast vs Hypereutectic Pistons - Which One Is Better? | Engine Building 101 |

The Truth: Cast vs Hypereutectic Pistons - Which One Is Better? | Engine Building 101 |

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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