47mm 70cc Big Bore Cylinder Kit & Head For Derbi 50 GPR Racing Senda R SM DRD X-Treme 50cc D50B0 2-Stroke Motorcycle

47mm 70cc Big Bore Cylinder Kit & Head For Derbi 50 GPR Racing Senda R SM DRD X-Treme 50cc D50B0 2-Stroke Motorcycle

Aliexpress UK