Shock Absorber Type 643 Competition QS
In series production, the Aprilia Tuono V4 1100 Factory KG features excessive rebound damping in the rear shock. The Wilbers shock optimizes both rebound and compression and offers a wider adjustment range than the stock unit, delivering clearly improved handling and increased safety.
Our racing team’s development work flows directly into the shock’s individual setup — you receive a genuine race-replica configuration. The fork is supplied with linear springs ex-works; the Wilbers solution also uses linear springs but with rate options matched to rider weight, intended use, and (for track use) prevailing conditions. Depending on usage, we recommend SAE 5 or GP5 fork oil; with the Wilbers conversion, negative spring travel and response are optimized accordingly.
Swiveling, diagonally mounted compression reservoir.
For tight installations, the reservoir mounts diagonally and swivels for optimal routing. A milled upper mount integrates the high- and low-speed compression adjusters; both compression and rebound feature 22 clicks. A pressure-control valve prevents hydraulic blocking and harsh impacts. Spring preload is continuously adjustable by hook spanner or optionally hydraulically. The reservoir angle can be re-indexed later by a trained Wilbers partner.
Product may vary from picture.
Additional Notes:
Compatible vehicles:
- 2017 - 2018 Aprilia Tuono V4 1100 Factory | KG
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Let customers speak for us
One of the best experiences . The guys at EPM got everything shipped to me before my Alaska trip
I have a 2025 cvo roadglide . I purchased the Wilbers nivomat system just before a road trip.EPM got everything shipped to me quickly b4 my trip. I installed everything myself and it wasn’t difficult at all. I must say my Alaska trip was 10,000 miles and the Wilbers performed excellent . I would put them at the top of all the suspensions I’ve used over the years
Everything worked great. I only wish there was a little more communication, of receiving and starting work. Still very good people and nice work
Everything worked great. I wish there was a little more contact, when or if they received on when they might start work. Still good staff and work
Haven't ridden yet, I had to wait on inner fork tubes but the seals look well made
Bryan, Mike and Frank and the crew were great work with to help get my YSS re302 sorted with a better spring rate. (46-13-28-180mm) Yesterday I went down a very chattery road and was surprised how much smoother the ride was. I recommend working with EPM Performance.
I installed this on a 2022 RC390 that I use for a track day bike. I could not be more pleased with the performance of this shock it is a huge upgrade over stock. within two laps I was on my previous year PB lap time with far less effort. Out of the box first impression was WOW! this is a well made very nice piece of kit, installation was a Breeze. For anyone on a budget like Myself trying to improve your bike and skill you cant go wrong with this for the price. My hat is off to YSS for producing a shock like this for guys like me.
Could not be more happy with the experience from ordering until delivered
We went for a long bike ride Friday and Saturday. The ride was very comfortable. The shock worked flawlessly. We are very pleased with the set up.
