Wilbers Powered by ZF Open Cartridge Kit
BMW F-Series one-sided cartridge kit.
Because the current F-Series uses asymmetrical fork legs, our solution fits a cartridge only on the right side. On the left, the stock spring is replaced with a progressive Wilbers Zero Friction spring; on the right, the non-adjustable cartridge is upgraded to a Wilbers powered by ZF open cartridge with adjustable rebound and spring preload.
Combined with Wilbers Zero Friction fork oil, you get a much more compliant fork response and a big comfort gain with ample reserves for hard braking and fast riding.
Kit contents:
– 1× progressive Zero Friction spring for the left leg (with reduction sleeve when lowered)
– 1× open cartridge for the right leg (rebound + preload adjustable)
– 1–2 liters of SAE 5 fork oil
NOTE
Fork Oil SAE 5 (1 L) | Air Chamber: 150mm
FITMENT
2020 - 2024 BMW F 900 XR | 4R90
SKU
303-0010-00
Please answer the questions below to ensure your suspension will be set up correctly for your carried weights.
Let customers speak for us
Can’t rave enough about the set-up! Two weeks after installation, I went on a 9 day ride from Staten Island NY to Key West FL and back, with various stops in between. The bike handled so smoothly, it was the best long ride i ever had. Never bottomed out either! I’ve been recommending the Wilber’s Nivomat suspension & EPM Performance to everyone I meet. Thank you.
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.
