MT flywheels

GM designed and tested a number of manual transmission flywheels but never released them for production.  A few people managed to get hold of these prototypes to redesign and produce them.

The MT ring gear 161T was never released as a service part.  This made getting a ready to bolt on flywheel difficult.

In 2023 Emtech released a ready to install flywheel with the ring gear installed. Its based on the GM design and is 30# with the ring gear. Its drilled for a 10.5" clutch of which there are a wide variety of choices from stock replacement to multi disk.

Emtech's flywheel is SFI certified and made from billet steel by a well known US based manufacture.  Current price as of July  2025 is US$440 + shipping.  emtechmotorsports.com/manual-transmission-flywheel.html