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Harley-Davidson Pan America RA1 – Suspension Optimization
Developed specifically for racing applications
We replace the fork’s linear springs with progressive units for better initial compliance and more support later in the stroke
Threaded Spring Preload: Easily adjust front-end sag via the fine-threaded collar system to properly balance your chassis based on heavy luggage
– External compression reservoir (hose-mounted)
Wilbers Fork Spring - Zero friction - Progressive Fork Upgrade Kit Harley-Davidson Pan America RA1 –Wilbers 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:
