Rear sprocket 49 aluminum teeth 520 Beta RR 125, 250, 450, RX 450, Xtrainer...Sunstar black

Crown 49 teeth Sunstar black Beta RR 200, 250, 450 ...

Transmission tray par new chain adaptable for motorcycle cross, enduro 125cc, 200cc, 250cc and other cylinders Beta RR ...

Technical characteristics of the crown

• Mark: Sunstar
• Drive train type: 520
• Number of teeth: 49
• Material: aluminium
• Colour: black
• 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: 76 mm
• B - Fixing center distance: 132 mm
• C - Fixing center distance: 152 mm
• D - Diameter of fixing holes: 8 mm
• E - Inner diameter of the crown: 125 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.