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46-mm piston diameter
leaving the rider stuck in the overly stiff second rate
the OEM rear spring can feel too hard over sharp bumps
New DLC coated cartridge tube
“Wonder-Front” — Vespa GTS Super HPE Front-End Upgrade
Wilbers Fork Spring - Zero friction - Progressive Front Fork Slide Bushings 46-mm piston diameterWilbers 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:
