KYB Complete Fork Free Piston for SHERCO, YAMAHA and GAS GAS 2018-2025

The KYB KYB-3001006 complete fork free piston is designed for SHERCO SE 125, SE 250, SE 300, SEF 250, SEF 300, SEF 450, SEF 500, YAMAHA WRF 450, YZF 250, YZF 450 and GAS GAS EC 250, EC 300 from 2018 to 2025. In closed cartridges, the free piston separates the damping oil from a compensation volume and follows the changes in volume as the fork works. Supplied complete, it replaces a piston that is worn, scored or no longer sealing properly.

Specifications

• Brand: KYB
• Manufacturer part number: KYB-3001006

When to replace it?

• Fork damping that changes during a ride.
• Oil getting where it shouldn't, cartridge oil level dropping.
• Seal hardened, marked or distorted when you remove it.

Replace this part at every full cartridge service, as set out in the fork manual. Check the diameter and dimensions listed: they must match your cartridge.

Fitting tips

1. Servicing a cartridge takes method and the right tools: follow the fork manual or leave it to a suspension specialist.
2. Strip the cartridge, clean all the parts and check the condition of the rod (scratches, pitting).
3. Fit the new part, oiled, without twisting it or damaging it on the threads.
4. Reassemble with fresh fork oil and carefully bleed the air out of the cartridge.

Why KYB?

A Japanese hydraulics specialist since 1919, KYB designs shock absorbers and forks for cars and motorcycles alike. Its motorcycle range also includes maintenance parts for its suspension: fork oil seals, fork bushings and oil.

Spare parts and items to plan

• Fork oil : LIQUI MOLY 10W 500 ml
• Fork oil seals : ATHENA P40FORK455139 · ATHENA P40FORK455141

Frequently asked questions

Should I service both fork legs?
Yes: service both sides together so they behave identically.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
GAS GAS EC 250 2019
GAS GAS EC 250 2018
GAS GAS EC 300 2019
GAS GAS EC 300 2018
SHERCO SE 125 2023
SHERCO SE 125 2022
SHERCO SE 125 2021
SHERCO SE 125 2020
SHERCO SE 125 2019
SHERCO SE 250 2023
SHERCO SE 250 2022
SHERCO SE 250 2021
SHERCO SE 250 2020
SHERCO SE 250 2019
SHERCO SE 300 2023
SHERCO SE 300 2022
SHERCO SE 300 2021
SHERCO SE 300 2020
SHERCO SE 300 2019
SHERCO SEF 250 2023
SHERCO SEF 250 2022
SHERCO SEF 250 2021
SHERCO SEF 250 2020
SHERCO SEF 250 2019
SHERCO SEF 300 2023
SHERCO SEF 300 2022
SHERCO SEF 300 2021
SHERCO SEF 300 2020
SHERCO SEF 300 2019
SHERCO SEF 450 2023
SHERCO SEF 450 2022
SHERCO SEF 450 2021
SHERCO SEF 450 2020
SHERCO SEF 450 2019
SHERCO SEF 500 2023
SHERCO SEF 500 2022
SHERCO SEF 500 2021
SHERCO SEF 500 2020
SHERCO SEF 500 2019
YAMAHA WRF 450 2023
YAMAHA WRF 450 2022
YAMAHA WRF 450 2021
YAMAHA WRF 450 2020
YAMAHA WRF 450 2019
YAMAHA YZF 250 2024
YAMAHA YZF 250 2023
YAMAHA YZF 250 2022
YAMAHA YZF 250 2021
YAMAHA YZF 250 2020
YAMAHA YZF 250 2019
YAMAHA YZF 450 2025
YAMAHA YZF 450 2024
YAMAHA YZF 450 2023
YAMAHA YZF 450 2022
YAMAHA YZF 450 2021
YAMAHA YZF 450 2020
YAMAHA YZF 450 2019
YAMAHA YZF 450 2018