Transmission tray par new chain adaptable for motorcycle 50cc Derbi Senda DRD Racing before 2010 and DRD Pro.
Technical characteristics and dimensions of the rear toothed pinion
Drive train type: 420
Number of teeth: 53
Color: neochrome titanium type
Number of fixing holes: 6
Diameter of fixing holes: 8mm
Crown Fixing Hole Type: Smooth
Fixing centers: 42mm and 80mm
Inner diameter of the crown: 102mm
Rear sprocket dimensions shown on the diagram
It is essential that you you check the type of drive train you need before ordering. On small motorcycles, most 50cc use the 420 (6mm width, 12.7mm pitch) but some 50s and most 125s use the 428 (7mm width, 12.7mm pitch) even for 125 in 520 (6mm width, 15.8mm pitch). All drive train parts, i.e. front sprocket, chain and rear sprocket, absolutely must be of the same type.
Compatibility models for guidance, it is advisable to disassemble the part to be replaced beforehand and check the correspondence with pictures and dimensions indicated on the site.