Rear sprocket 40 teeth steel 520 Yamaha YFZ 450 R, YFM Raptor 250 ... Afam gray

Rear sprocket 38 teeth Afam Yamaha YF-Z 450, YFM Raptor 250, SMC Blast 170, Barossa Quaterback 250 ...

Transmission tray par new chain adaptable for quad 170cc, 250cc, 350cc, 450cc, 700cc Barossa Silverhawk, SMC, Blast, Yamaha YFM Raptor, YFZ, YFZ R ...

Technical characteristics and dimensions of the rear toothed pinion

• Mark: Afam
• Manufacturer Part Number: 12407-40
• Drive train type: 520
• Number of teeth: 38
• Material: steel
• Color: black or gray (depending on arrivals)
• Number of fixing holes: 4
• Diameter of fixing holes: 10 mm
• Crown Fixing Hole Type: Smooth
• Fixing centers: 103 mm and 145 mm
• 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 (width 6mm, center distance 12.7mm) but some 50s and most 125s use the 428 (width 7mm, center distance 12.7mm) even for 125 in 520 (width 6mm, center distance 15.8mm). All drive train parts, i.e. front sprocket, chain and rear sprocket, absolutely must be of the same type.