Shock Absorber Type 640 Road
The Kawasaki ZX-6R (ZX636G) comes equipped with linear fork springs from the factory. The Wilbers conversion also utilizes linear fork springs, but with a slightly higher spring rate for improved performance. Additionally, the conversion uses Wilbers Zero Friction fork oil with an adjusted air chamber, optimizing damping, negative spring travel, and overall response behavior.
Due to the ZX-6R’s track-oriented design, Wilbers offers fork springs in various spring rates to match different riding styles and preferences. For assistance in selecting the ideal spring rate, please contact our support team.
The stock Kawasaki ZX-6R is delivered with slightly excessive negative spring travel. The Wilbers shock absorber corrects this with a minimally shorter strut, maintaining the same seat height as the original suspension. The OEM shock also exhibits excessive rebound damping; the Wilbers version refines both rebound and compression damping for more balanced performance.
This optimization results in a wider adjustment range than the stock suspension and delivers smoother ride quality, enhanced handling, and improved safety.
The basic edition of the Wilbers Adjustline mono shock absorber features the same advanced technology as the more complex models. The only difference is the omission of the compression reservoir and, therefore, the ability to adjust high- and low-speed compression. Despite this, it makes no compromises in response behavior or durability. The radial piston, wet-run operation, and Teflon-guided self-aligning bearings redefine the standard for shock quality. As usual, the spring preload can be continuously adjusted, and the rebound damping can be fine-tuned via an open-bleed system in 22 clicks. The shock absorber can also be retrofitted with numerous Wilbers accessories.
Product may vary from picture.
hydraulic preload adjustment, not adjustable with hook wrench
Spring preload and rebound damping adjustable.
FITMENT
2019 - 2025 Kawasaki ZX-6R Ninja | ZX636G
SKU
640-1328-00
Please answer the questions below to ensure your suspension will be set up correctly for your carried weights.
Let customers speak for us
Perfect fit, perfect replacement for the factory Showa. 1993 BMW R100R rides like new again!
Very high-quality shocks. Pricing is reasonable for what you get. Super easy install. Highly recommend.
I tried two after market rear shocks on my‘23 Road Glide and wasn’t pleased at all with either set. My wife gave me an evil eye when I-told her I had ordered another set (3rd set) of shocks. About an hour into our first ride on the Wilbers she acknowledged the Wilbers were a huge improvement.
The shocks are very easy to install and make the ride as smooth as can be.
Fantastic upgrade that really improves the ride.
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.
