Wilbers Fork Spring - Zero friction - Progressive
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:
NOTE
Fork oil SAE 10 (2 L) | Air chamber: 110 mm
Fork oil SAE 7,5 (2 L) | Air chamber: 110 mm
FITMENT
2017 - 2025 Harley-Davidson Road King FLHR | FL3
SKU
600-0543-01
Please answer the questions below to ensure your suspension will be set up correctly for your carried weights.
Let customers speak for us
What a great product. So much better than stock. Easy set up and go. No more 3 different adjustments.
Front cartridges for my 2021 Harley heritage softail classic. Solid and stable w no bouncing and jittering. Huge difference from stock.
I have about 50 miles riding on this shock so far. It works and feels great.
I had hyperpro one inch lowered shock and springs installed at epm, on my 2025 z650, great service, (thank you guys). Before the install i could feel every bump in the road, after the ride was very smooth except for very large holes. total different bike. Very satisfied.
The shock seems to do it's job - it absorbs road bumps and rebounds quickly to take on the next one.
Resolved the issue with my 2010 BMW T1209GSA front leaking OEM shock. I was leaking. The turnaround was quick and worked perfectly. Thanks
Mike took care of the installation, he is very knowledgeable and friendly. He did a great install and in a short amount of time.