Rear sprocket 42 teeth steel 520 Yamaha YZ 125, YZF 250, 450... Sunstar gray

Crown 42 teeth 520 Sunstar gray Yamaha WR, YZ 125, 250 ...

Transmission tray par new chain adaptable for motorbike, motorbike cross, enduro 125cc, 250cc and other displacements Yamaha WR, YZ ...

Technical characteristics of the crown

• Mark: Sunstar
• Drive train type: 520
• Number of teeth: 42
• Material: steel
• Colour: grey
• Number of fixing holes: 6
• Type of mounting holes: countersunk

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

• A - Fixing center distance: 75 mm
• B - Fixing center distance: 130 mm
• C - Fixing center distance: 150 mm
• D - Diameter of fixing holes: 8 mm
• E - Inner diameter of the crown: 130 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.