Engines and Components› Pistons and Piston Rings

United Engine & Machine Co

FHR PISTON KIT BBC 454

$882.84

SKU: U00B IC9919KTM.100

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

Icon's FHR (Formed Head Relief) pistons provide quality on a budget for Chevrolet 454 CID engines. They feature valve reliefs formed into the piston during the forging process and are made from 11% silicon 4032 aluminum, allowing for tighter piston-to-wall clearance, reduced friction, extended piston life, and reduced wear. Mini grooves facilitate heat transfer, and skirts are machined using UEM's unique in-house built CNC machines. Wrist pins and spiral locks are included; the 5/64 x 5/64 x 3/16 ring set is not included. This kit is designed for a closed chamber with a 4.250" standard bore size and 9.800" OE deck height, offering compression ratios ranging from 9.6:1 to 11.8:1 depending on cylinder head volume. The advertised piston weight is 657 grams, with wrist pin weight at 141 grams.
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FHR PISTON KIT BBC 454

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandUnited Engine & Machine Co
Part NumberU00B IC9919KTM.100

Videos

Budget Big Block Build: Chevy 454 (7.4L) teardown

Budget Big Block Build: Chevy 454 (7.4L) teardown
454 Chevy [GMC] Timing!

454 Chevy [GMC] Timing!
BB Chevy 454 stroked to 525 cubes - super big torque!

BB Chevy 454 stroked to 525 cubes - super big torque!
ICON FORGED PISTONS, why you need them!!

ICON FORGED PISTONS, why you need them!!

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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