This is not the actual group buy - just asking how many could get interested. IÂ´m planning to get unique single mass flywheel with Sachs race engineering (SRE) -765 cover from M5 BMW. Specified torque limit for the cover is 590Nm with organic plate, and 700Nm with sintered plate. Friend of mine had 645Nm and the organic sachs plate was still holding, so those specified values has some room. I'll send standard clutch+DMFW as a model so they could desing the flywheel as a bolt on for the 02m (s3 6spd) box. I was thinking that weight should still be around 8-9kg to get less chatter. The estimated price for one flywheel was 400â¬ (~325£), the cover is around 310â¬ (~250£), and SRE dampened organic plate cost 265â¬ (~215£). I'm pretty sure that the price could drop if we can get few "extra" orders. It isn't cheap, but the quality matters more than the price for me. Still the Sachs own kit cost more than that, and the M5 cover can handle at least 70Nm more.. Does anyone know any place where I could get ring gears ("starter gear") separetly? The price of the flywheel includes machined gears, but it could drop the price a bit if the ring gear comes separetly.