JRZ RS ONE Single Adjust for 2015-2021 Mustang (Shocks)
JRZ RS ONE Single Adjust for 2015-2021 Mustang
JRZ RS ONE Single Adjust for 2015-2021 Mustang (Close-Up)
JRZ RS ONE Single Adjust for 2015-2021 Mustang Force vs Displacement Chart

JRZ RS ONE Single Adjust for 2015-2022 Mustang

Regular price $4,145.00
Shipping calculated at checkout.

The KB Spec JRZ RS One Single Adjustable Coil-Over Shock is perfect if you haven’t worked with adjustable shocks before. The single adjustment is primarily for adjusting rebound with some bump. Feel what each click of adjustment does and how it impacts the way the car drives. A great Mustang adjustable coil-over-shock!

  • Single Adjustable
  • Adjustable damping
  • 21 clicks
  • Height adjustable
  • Use of silent blocks
  • Less aggressive
  • Valving Fits on OE top mounts
  • Every click noticeable change 

The new shaft bearing construction allows the damper to live a long life in between service without performance fade. Specially designed for longevity and re-buildability. 


Specially designed bump stops and dust boots are included to further increase service life and safe operating ranges, 


The unique compression blow-off system damps the unsprung mass resulting in superb handling characteristics without sacrificing comfort. 


The JRZ RS Line dampers use CNC machined internals that allows precise damping characteristics to be achieved. The JRZ RS is built on the same line as the motorsport line.


No need to compromise on performance/comfort due to the large adjustment range. The suspension allows adjustment between smooth street use and aggressive track use. Below you can see the force/displacement graph of a typical JRZ RS ONE.

With every click (counterclockwise) you increase the damping forces in both compression and rebound making the suspension stiffer. With every click, you will notice a direct influence on the handling of the car. Therefore adjusting the suspension is very quick and easy.  

THE SPRING AND SHOCK PACKAGES WE OFFER are CUSTOM VALVE to Kenny’s specifications AND BUILT to order. SPRING RATES are chosen by Kenny for your individual APPLICATION, and adjustable Shocks ARRIVE preset by Kenny along with his shock tuning guide and ARE ONLY AVAILABLE THROUGH KENNY BROWN.

WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. P65Warnings.CA.Gov/Product

Prop 65 Warning for California Residents