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Engines and Components Pistons and Piston Rings

Diamond Pistons

Chevrolet LSX 12deg 4.125 Bore x 3.622 Stroke x 6.125 Rod x 1.304 Comp Height; Std Kit

$1,549.99 $1,472.49 Save $77.50

SKU: D00N 21565-RS-8

In Stock
In Stock
Ships by Aug 3
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 21565-RS-8

The muscle car era is back with a horsepower-fueled vengeance and Diamond has late-model muscle builders covered with a huge selection of performance pistons. Whether you re building an LS, LT, Modular/Coyote, or a third generation Hemi, Diamond has the pistons you need to get the job done right. Pistons are available for builders seeking more cubic inches, higher compression, or nitrous/boost ready performance, and all of Diamonds Modern Muscle pistons are forged and machined 100% in the USA, utilize extremely strong 2618 aluminum and incorporate premium Trend Performance wrist pins.

Features:

  • Forced pin oilers from the oil ring; Pin Fitted; Moly Coated Skirts; 3D Pockets; Inboard Forging; Pins, Lock's & Support Rails (if required) included

Diamond Racing Products Piston Kit for Chevrolet LSX 12? 4.125 Bore x 3.622 Stroke x 6.125 Rod x 1.304 Comp Height - Std Kit.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

Diamond Racing Products Piston Kit for Chevrolet LSX 12? 4.125 Bore x 3.622 Stroke x 6.125 Rod x 1.304 Comp Height - Std Kit.

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

BrandDiamond Pistons
Part NumberD00N 21565-RS-8

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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