See: REDS Racing

REDS Racing have introduced the new Tetra clutch Scuderia Edition specifically configured for 721 Scuderia engine. The new clutch setup features four aluminum shoes and 4 x 1.0 springs which improve the 721 Scuderia engine power delivery. The Tetra clutch 721 Scuderia Edition combined with REDS clutch bells have proven to guarantee an extraordinary fuel mileage in recent tests and competitions. The clutch system is available both with 32mm and 34mm diameter to make it suitable for any type of car. The high inertia flywheel, designed for low acceleration and recommended for low grip tracks as well as the low inertia flywheel for high acceleration, recommended for high grip tracks are available as optional parts. Using the configurable top plate and springs, there are 6 different combinations: 1.0 and 1.1 mm springs and 3 preload adjustments with the top plate.