OS-BASE 901 is an "over the Seat" harness for mounting OS-6

Set of 4 parts (for 2 indicator lights) Color: Black

0 Position: REAR RIM_DIAMeter: 17 Speed_index: (W)> 270 km/h Tire_category: Hypersport tire_family: Motorcycle & scooter tires tire_load_index: 82

and lighting

GATES BELT DRIVE POWERLINK PL31009 derbi-gpr-50-r-nude-50-2007-esi8286901 OS-BASE 901 is an "overWe've Special Designed Our PowerLink Drive Belts for Your Motorized Continuous Variable Transmission (CVT) Applications, Including Street Legal, Step Through Scooters, and Go Karts. , Gates PowerLink Belts are available in Two Types: Conventional Belt, Which Offers Oe Equivalent Performance and Exceptional Durability, and our Premium Belt, Designed for Reliable Durability in Your High Performance. Acceleration., Smooth Scooter Operation., For