Rear sprocket 45 teeth steel 428 Yamaha YBR, Bullit Cooper 125... Sunstar gray

Crown 45 teeth 428 Sunstar gray Yamaha YBR, Bullit Cooper ...

Transmission tray par new chain adaptable for motorcycle 125cc Yamaha YBR, RDX, Sym XS and Bullit Cooper.

Technical characteristics of the crown

• Mark: Sunstar
• Drive train type: 428
• Number of teeth: 45
• Material: steel
• Colour: grey
• Number of fixing holes: 4
• Type of mounting holes: smooth

Dimensions of the rear pinion (see marks on the typical drawing)

• A - Fixing center distance: 56 mm
• B - Fixing center distance: 80 mm
• C - Diameter of fixing holes: 8 mm
• D - Inner diameter of the crown: 64 mm

It is essential that you you check the type of drive train you need before ordering. On small motorcycles, most 50cc use the 420 (width 6 mm, center distance 12.7 mm) but some 50s and most 125s use the 428 (width 7 mm, center distance 12.7 mm) even for 125 in 520 (width 6 mm, center distance 15.8 mm). All drive train parts, i.e. front sprocket, chain and rear sprocket, absolutely must be of the same type.