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Engines and Components Pistons and Piston Rings

Diamond Racing

Forged Piston Kit, 4.080" Bore, LS9/LSA Engine

$1,244.49 $1,140.94 Save $103.55

SKU: 11577-R2-8

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Description

The Diamond Racing Products piston kit is engineered for Chevrolet LS9/LSA engines, featuring a 4.080-inch bore, 3.622-inch stroke, and 6.125-inch rod length. This specific upgraded kit, part number 11577-R2-8-H, includes advanced features such as forced pin oilers derived from the oil ring and pin-fitted, moly-coated skirts. The design also incorporates 3D pockets, pins, locks, and necessary support rails. Diamond Racing Products, established in 1968 during the golden age of muscle cars and drag racing, emerged from a spirit of innovation to push the boundaries of speed. The company continues to be a significant contributor to the advancement of performance and racing piston technology. This piston kit is part of Diamond Racing's Race Series, built to meet the demands of high-performance applications. The specifications include a 1.304-inch compression height. The kit is designed with durability and performance in mind, utilizing quality materials and construction methods to ensure reliability in demanding racing environments.

MIA's Description

The Diamond Racing Products piston kit is designed for Chevrolet LS9/LSA engines with a 4.080 bore, 3.622 stroke, and 6.125 rod length. This upgraded kit features forced pin oilers from the oil ring and pin-fitted, moly-coated skirts. It also includes 3D pockets, pins, locks, and support rails if required.

Founded in 1968, Diamond Pistons has been a driving force in performance and racing piston design, born from the innovation of the muscle car and drag racing era. Lethal Performance proudly offers the full line of Diamond Racing Products.

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Specifications

BrandDiamond Racing
Part Number11577-R2-8
CategoryEngines and Components

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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