Racing CrankShaft For Aprilia RS 50 RX50 Derbi Senda 50 Gilera-RCR 50 After 2005

Good quality racing full circle crankshaft for geared bikes with the Derbi D50B0 engine (after 2005). The full-flange racing crankshaft enhances pre-compression in the crankcase, resulting in a significantly improved filling ratio.