Wilbers Fork Spring - Zero friction - Progressive Rear Suspension both the negative spring travel

both the negative spring travel and response behavior are optimized accordingly

harder spring rate is reached later

the radial piston design and wet-run guidance ensure the most sensitive response behavior and maximum durability

Comes with a 7-year warranty

The stock rear shock uses a very hard spring that compresses minimally

Wilbers Fork Spring - Zero friction - Progressive Rear Suspension both the negative spring travelWilbers progressive fork springs ZERO Friction finishing Our vibratory finishing process (trough vibrator with tailored media) micro polishes the spring surface. The resulting fine, shiny finish reduces surface roughness and friction hence ZERO Friction. Pair with our specially formulated Wilbers fork oil and the specified air chamber for your vehicle to maximize performance. Product may differ from the picture. Recommended viscosity and air chamber: