Wilbers Fork Spring - Zero friction - Progressive Fork Upgrade Kit the radial piston design and

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

– Stepless spring preload adjustment

– Zero Friction fork springs with reduction bushings

The YSS CO308 Open Fork Cartridge Kit is a groundbreaking suspension upgrade engineered to completely replace your factory fork internals

a passenger

Wilbers Fork Spring - Zero friction - Progressive Fork Upgrade Kit the radial piston design andWilbers 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: