12 votes
From personal experience, I'd stray from a lightened flywheel. I had a SPEC kit with a stage 1 and lightweight flywheel, and the chatter is not ideal for daily driving. This also isn't the smoothest operating motor, and the flywheel will remind you.
I have a custom lightweight flywheel that was made from a Spec single mass flywheel... It does rattle, but not so bad that it's annoying. It revvs very fast compared to a regular flywheel... I must say that the 11lb fly' does make throttle response pretty quick and once used to it, it's a joy to drive.
My starter was definitely messed up but so are the teeth on the SPEC steel flywheel.
I have a HPA specified SPEC 3+ with a single mass steel flywheel. Engagement is pretty much half way through total range of movement. I like it, now I just need to get use to the flywheel chatter when in neutral.
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The brand is registered in USA. Official website: http://www.specclutch.com/.
In March 2026, PartReview does not yet have a formed opinion of SPEC flywheel. This part is not in the ranking due to insufficient reviews. You can help by adding a review for SPEC flywheel.
Currently there are 4 reviews and 12 votes. Average rating — 3 out of 5. Vote balance: 6 up, 6 down.
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