§ 01 / Part
12121638 SPROCKET F 520 13T UL
incl. VAT
Usually dispatched within 3 working days.
Authorised stockist
RENTHAL
14-day returns
Easy & hassle-free
Secure checkout
256-bit encryption
§ 02 / About this part
What it is
The RENTHAL SPROCKET F 520 13T UL, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.
This ultralight countershaft sprocket sits on the gearbox output shaft to drive your chain. The drilled design reduces rotating mass without compromising strength. It is a critical wear item in your drivetrain. Replace it when the teeth begin to hook or thin out. Always fit a new front sprocket when installing a new chain to prevent premature wear. This steel component is machined to precise tolerances for an exact fit on your bike's splines. Ensure the locking washer or circlip is seated correctly during installation. Check your workshop manual for the specific torque setting on the countershaft nut.
§ 03 / Specs
The numbers
- Brand
- RENTHAL
- Part number
- 12121638
- Weight
- 0.12 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 37 models · 39 year-bands
Kawasaki 15 models
Suzuki 5 models
Yamaha 19 models
- TDR 250 1988–1990
- TZR 250 1987–1989
- WR 400 F 1998–2000
- WR 426 F 2001–2002
- WR 450 F 2005–2023
- YFM 660 R 2001–2005
- YFM 660 R LE 2003–2004
- YFM 660 R SE 2005
- YFZ 450 2004–2009
- YFZ 450 2012–2014
- YFZ 450 BB 2006–2007
- YFZ 450 LE 2004
- YZ 250 1999–2024
- YZ 250 X 2016–2024
- YZ 400 F 1998–1999
- YZ 426 F 2000–2002
- YZ 450 F 2003–2025
- YZ 450 F SP 2006
- YZ 450 FX 2016–2023
No matches. Try a different make or model.
* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.
§ 05 / About Iron Offroad
Iron Offroad
