8. The standard coilover shock selected for the REVO IFS is the Afco pro-touring series based on their proven performance and ride quality. A non-adjustable shock is included with the base kit, but upgrades are available to single and double adjustable. For those who are looking for the ultimate in performance and ride quality, the Roadster Shop has teamed up with Penske Racing Shocks and has developed a specific valved shock for their suspension. This will be offered in double adjustable and remote reservoir setups for those looking for the pinnacle in performance coilovers.