progressive fork springset for K75S K75RT <1991 (Sachs forks), K100RS

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Progresive springs from WIRTH will greatly improve the heandling of your bike and should be considered one of the first upgrades to your bike.

The advantages of progressive springs:

• Reduced the effect of "dives" when braking

• Thanks to the possibility of a greater burden on progression

• Greater durability of sealants fork - lower oil pressure spikes in the fork

• Perfect replacement of exhausted, "crumpled" springs.