Subaru STI Sports Chromoly Lightweight Flywheel Assembly - 6 Speed
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- Description
STI Chromoly Lightweight Flywheel – ST123104S000
Optimised for 6‑Speed Performance
Crafted from high-strength chrome‑molybdenum steel, this flywheel trims rotational mass compared to stock units—delivering noticeably sharper throttle response and quicker engine revs and deceleration
Engineered Build & Finish
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Material: Durable chrome‑moly steel
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Weight: 7.2 kg — significantly lighter than OEM counterparts
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Diameter: 240 mm
Designed exclusively for 6-speed manual (6MT) Subaru transmissions
Vehicle Compatibility
Ideal for turbo Subaru models with 6MT under the SF, SG, GD, GG, GV, GR, and VA chassis codes ranging from early Forester and Impreza WRX STI through to the latest STI generations
Benefits of Upgrading
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Rev-Responsive Driving: Reduced inertia gives your engine the agility it needs—experience livelier throttle feel and faster rev recovery.
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Street & Track-Ready: Motorsport-grade construction balances performance with everyday usability—though idle stability and clutch feel may be sharper than stock
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Direct OEM Fitment: Drop-in replacement for ST123104S000/PT120101—no machining or extra mods required on 6MT setups
Compatible OEM Numbers
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