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Spring kit KTM & HUSQVARNA

Spring kit for full-size KTM SX & SX-F models and Husqvarna TC & FC models replacing the original WP AER cartridge. Spring is adjustable from the outside with indexing. Our Spring Kit is fitted with a thrust needle roller bearing to reduce spring friction for better handling.


1. Replace the original WP AER cartridge with the Donerre Spring Kit cartridge

2. Put 400ml of Donerre oil

3. Put the spring wedge with the thrust needle roller bearing then the spring

4. Screw the cap on the shaft

5. Tighten the locknut

6. Screw the cap on the fork stem


KTM SX and SX-F (125cc and more)

HUSQVARNA TC and FC (125cc and more)


 + more preload on the spring

– less preload on the spring



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