Engines and Components› Pistons and Piston Rings

Competition Clutch

Competition Clutch 2004-2011 Subaru STI 15lb Steel Flywheel

$395.00

SKU: C008 2-721-ST

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Description

Part #: 2-721-ST

Competition Clutch Lightweight Steel Flywheels (ST suffix) are recommended for naturally aspirated and/or street-driven applications. This flywheel preserves low-end torque and driveability. Well-suited for Stage 1 and Stage 2 clutch applications. Made of 4140 forged steel and are a one-piece design. Not all applications have the ST and STU versions available. Flywheel weights vary from 8lbs to 18lbs depending on application.

MIA's Description

The HKS BCD Full Piston Kit 21004-AN023 is designed for the Nissan Skyline GT-R with the RB26DETT engine, typically when building a 2.8L stroker motor. This kit is suitable for full engine rebuilds or performance upgrades where higher horsepower and boost levels are desired, featuring forged pistons for handling increased stress and temperatures.

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Specifications

BrandCompetition Clutch
Part NumberC008 2-721-ST

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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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