Shock Absorber Type 643 QRR - IDM
IDM race-replica shock with finned reservoir.
Specially developed for IDM Superbike competition, this shock uses an integrated finned expansion reservoir for superior oil cooling and a constant damping curve. Our racing team’s development work feeds directly into the rider-specific setup — a true race-replica shock.
Features:
- X-PA spring-preload adjuster: stepless 15 mm range
- Ride-height adjustment: shock length ± 5 mm
- Adjustments: high-/low-speed compression and rebound — 22 clicks each
- Exclusive colorway: black-anodized milled aluminum, blue chrome-silicon spring, blue-anodized compression adjusters
NOTE
Only racing
FITMENT
2020 - 2025 Yamaha YZF-R1 | RN65
SKU
643-1180-10-XPA
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.
