-1R kits are sprung ceramic single plate upgrades like seen in the ""-1B"" kits

Check out the Nissan S13 rear suspension kit

Ford Kuga EcoBoost 2

\nTS-0204-1415 : GenV Plumback Raceport Sleeper Suit Superchargers

Clutch Kit - Xtreme Performance Heavy Duty Organic 240Nm 600kg (40% inc.) KTY23009-1A toeplates -1R kits are sprung ceramicXtreme Performance sprung organic kit 1A Recommended for: Street use in vehicles with minor engine modifications. Sprung organic clutch kits offer exceptional driveability for vehicles used daily but also have performance modifications. The sprung organic disc offers improved dampening which reduces the shock loading on the transmission. Specifications: Torque capacity 240Nm Clamp load 600kg 40% Increased over standard Organic Friction Discs Heavy