EBC 13-15 KTM 390 Duke (390cc) CSK Coil & Diaphram Spring Kits

EBC CSK Clutch Springs. Sold as a kit. New EBC CSK clutch springs prevent damage from prolonged exposure to heat and wear. They are OEM upgrades and are 10 percent stiffer than stock. The lever will be slightly stiffer which can wear your hand out riding in heavy traffic, but in return the clutch engages smoother and faster with the stiffer springs making takeoff smooth and shifting faster and less effort to speed shift.