Yeah Racing's new generation of dampers, the Qutus (Quick Tuning System) allows for you to adjust the damper action without taking the damper apart and having to change oil! Build with the included adjustable pistons to quickly change how much dampening you require. Choice from 1 to 5 holes open in the piston will allow you to tune the damper matching to your track conditions.
For the 50mm variation of the QUTUS dampers, included are shock shafts which you can build 52mm (eye-to-eye) dampers when you require that tiny bit more extra length. If adjustable pistons aren't your thing, traditional "fixed" pistons are also included in both three and four hole variants. The shock body has been updated to be of "big-bore" spec. which fills more oil than traditional dampers which gives much more consistent handling in both cold and hot temperatures. Soft, Medium and Hard springs have been included as well.