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Supplier details checked 2026-09-23 · Test catalog
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Conversion steel flywheel for Chevy LS (6-bolt) engine to the Subaru WRX STI 6-speed transmission. Built to work with our 850 Serie Clutch Kit.
Chevy LS Engine to Subaru STI 6-speed Transmission
Lightweight Steel Flywheel for FX850
Reduces turbo "lag" in turbocharged vehicles
Improved performance for quicker revs
CNC machined and precision balanced
SFI Certified
Clutch Masters 850 Twin Disc LS Engine To Subaru EJ Transmission Steel Flywheel
Clutch Masters Clutch Flywheel
Clutch Flywheel
LS swap the world is still going strong. We developed the LS engine to Subaru EJ transmission adapter kit after getting several requests for flywheels for the swap. To allow us full control over the dimensions and make sure everything fits together we developed the adapter plate to go along side the flywheels we make for this swap. This is not a straight forward swap but it's been proven a few times now to be a very capable swap. We all know how capable and well balanced most Subaru chasssis' are and adding an LS to the equation is a good formula for a never ending smile making machine. We hope that our adapter plate and flywheels make the swap just a little easier for those brave souls undertaking this swap! We have flywheels available for single disc and twin disc setups to cover the ranges of power people plan to make. Contact us today if you have any questions about how we can help!
Every Clutch Masters flywheel is proudly designed and manufactured in the USA. Flywheels are first designed in CAD and are then precision CNC machined in house in one of or Haas CNC lathes out of 6061 aluminum or 1045 steel billet cores. After machining, the flywheel is zero balanced to ensure it is evenly weighted on all sides and spins 100% true. Each aluminum flywheel is Type 3 Hard Anodized for the ultimate in durability and protection of the aluminum. All steel flywheels are black oxide coated to add a layer of rust prevention and gives our steel flywheels a unique black finish. The flywheel is then assembled by a Clutch Master Craftsman, double checked for imperfections and tolerances, and is then ready to be paired with one of our FX100-FX500 single disc clutch kits or twin disc options. All flywheels are SFI 1.2 Certified for use in motorsports.
