DERBI SENDA/GPR/RS50/RS4/RX50/SMT/RCR (KIT) (ref: 333503)

DOPPLER has opted for a soft disc clutch and an extra lined disc (5 soft discs and 5 lined discs) compared to the original one (3 soft discs and 4 lined discs). This number of discs improves friction surface and offers to give higher torques and powers. The high-friction linings associated to stiffer springs decrease the number of frictions.