
§ 01 / Part
04051129 FF SPRING SET 43.5MM 4.2
incl. VAT
Usually dispatched within 3 working days.
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Moose Offroad
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§ 02 / About this part
What it is
The Moose Offroad FF SPRING SET 43.5MM 4.2, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.
A straight-rate 4.2 N/mm fork spring set for 43.5mm closed-cartridge forks. The pair carries the front end and sets your static and race sag before any clicker work matters. The 4.2 rate suits lighter riders, around 65 to 75kg in gear, who find the stock springs too firm and want the front to settle into the stroke. Fits the open-cartridge platform used across KTM, Husqvarna, GasGas EC, Beta, Sherco and Yamaha enduro models. Set sag first, then dial compression. Check your manual for oil height and cap torque before you ride.
§ 03 / Specs
The numbers
- Brand
- Moose Offroad
- Part number
- 04051129
- Weight
- 1.12 kg
- VAT
- 20%
// Fitment
Will it fit your bike?
Fits 139 models · 152 year-bands
Beta 4 models
Gas Gas 30 models
- EC 200 RACING 2011
- EC 200 RACING 2013–2015
- EC 250 2011–2014
- EC 250 2018–2025
- EC 250 E 2012
- EC 250 E RACING 2014–2015
- EC 250 E4 2018–2019
- EC 250 F 2012–2015
- EC 250 F 2021–2025
- EC 250 RACING 2011–2015
- EC 250 RACING 2017
- EC 250 SIXDAYS 2011
- EC 300 2011–2013
- EC 300 2021–2026
- EC 300 F 2013–2015
- EC 300 RACING 2011–2015
- EC 300 RACING 2017
- EC 300 SIXDAYS 2011–2012
- EC 350 F 2021–2026
- EC 450 F 2013–2015
- EC 450 F 2024–2025
- EC 500 F 2024–2026
- ES 350 2024
- ES 500 2024
- EW 500 F 2024
- EX 250 2024–2025
- EX 250 F 2024–2025
- EX 300 2024–2025
- EX 350 F 2024–2025
- EX 450 F 2024–2025
Honda 1 model
Husaberg 3 models
Husqvarna 22 models
- FC 250 2015–2016
- FC 350 2015–2016
- FC 450 2015–2016
- FE 250 2016–2025
- FE 350 2016–2024
- FE 350 S 2016
- FE 350 S 2020–2022
- FE 450 2016–2025
- FE 501 2016–2025
- FE 501 S 2024
- TC 125 2015–2016
- TC 250 2015–2016
- TE 125 2016
- TE 150 2017–2019
- TE 150 I 2020–2025
- TE 250 2016–2018
- TE 250 I 2018–2025
- TE 300 2016–2018
- TE 300 I 2018–2025
- TX 125 2017–2019
- TX 300 2017–2019
- TX 300 I 2020–2024
Kawasaki 2 models
KTM 39 models
- EXC 150 TBI 2024–2025
- EXC 150 TPI 2020–2023
- EXC 250 2017
- EXC 250 TBI 2024–2025
- EXC 250 TPI 2018–2023
- EXC 300 2017
- EXC 300 TBI 2024–2026
- EXC 300 TPI 2018–2023
- EXC-F 250 2017–2026
- EXC-F 350 2017–2026
- EXC-F 450 2017–2026
- EXC-F 500 2017–2026
- RC 125 ABS 2022
- SMR 450 2022
- XC 125 2024–2027
- XC 150 2015
- XC 250 2017–2019
- XC 250 TPI 2020–2027
- XC 300 2015–2019
- XC 300 TPI 2020–2027
- XC-F 250 2017
- XC-F 250 I 2018–2027
- XC-F 350 2015
- XC-F 350 I 2016–2026
- XC-F 450 2015
- XC-F 450 I 2016–2027
- XC-W 125 2017–2019
- XC-W 125 TPI 2025–2026
- XC-W 150 2017–2020
- XC-W 150 TPI 2021–2026
- XC-W 250 2017–2019
- XC-W 250 TBI 2024–2026
- XC-W 250 TPI 2019–2023
- XC-W 300 2006–2019
- XC-W 300 TPI 2019–2026
- XC-W 450 2012–2016
- XCF-W 350 2020–2022
- XCF-W 450 2023–2025
- XCF-W 500 2023
Sherco 20 models
- SE 125 2018
- SE 250 2018
- SE 250 2019–2020
- SE 300 2018
- SE-R 125 2018–2021
- SE-R 250 2017–2021
- SE-R 300 2017–2021
- SE-SD 125 2018
- SE-SD 250 2018
- SE-SD 300 2018
- SEF 250 2018–2019
- SEF 300 2018
- SEF 450 2018–2019
- SEF-R 250 2017–2021
- SEF-R 300 2017–2021
- SEF-R 450 2016–2017
- SEF-R 450 2019
- SEF-R 500 2020–2021
- SEF-SD 250 2018
- SEF-SD 300 2018
TM Racing 19 models
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
// Moose Offroad
