Rear sprocket 50 teeth steel 520 Beta RR 125, 250, 450, RX 450, Xtrainer... Afam black

50 crown teeth 520 Afam black Beta RR 125... and Xtrainer 250 and 300

Transmission tray par new chain adaptable for enduro motorcycle Beta RR 125cc and other displacements, Xtrainer 250cc and 300cc.

Technical characteristics of the crown

• Mark: Afam
• Manufacturer Part Number: 38300K-50
• Drive train type: 520
• Number of teeth: 50
• Material: steel
• 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: 131 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.

applications:

BETA 250 X-Trainer (2019 - 2022)
BETA 300 X-Trainer (2019 - 2022)
BETA RR 125 2 (2023)
BETA RR 125 Enduro - Enduro Racing (2018 - 2022)
BETA RR 200 2 (2023)
BETA RR 200 Enduro (2019 - 2022)
BETA RR 250 2 (2023)
BETA RR 250 Enduro - Enduro Racing (2013 - 2022)
BETA RR 300 2 (2023)
BETA RR 300 Enduro - Enduro Racing (2013 - 2022)
BETA RR 350 4 (2023)
BETA RR 350 EFI Enduro - Enduro Racing (2015 - 2022)
BETA RR 350 Enduro - Enduro Racing (2013 - 2015)
BETA RR 390 4 (2023)
BETA RR 390 EFI Enduro - Enduro Racing (2015 - 2022)
BETA RR 400 Enduro (2013 - 2014)
BETA RR 430 4 (2023)
BETA RR 430 EFI Enduro - Enduro Racing (2016 - 2022)
BETA RR 430 Enduro - Enduro Racing (2015)
BETA RR 450 Enduro - Enduro Racing (2014)
BETA RR 450 Enduro (2013)
BETA RR 450 Enduro Racing (2013)
BETA RR 480 4 (2023)
BETA RR 480 EFI Enduro - Enduro Racing (2015 - 2022)
BETA RR 498 Enduro - Enduro Racing (2014)
BETA RR 498 Enduro (2013)
BETA RR-S 350 (2018 - 2022)
BETA RR-S 350 4 (2023)
BETA RR-S 390 4 (2023)
BETA RR-S Enduro (2018 - 2022)
BETA RR-S 430 (2018 - 2021)
BETA RR-S Enduro (2022)
BETA RX 300 (2021 - 2022)