Asymmetrical design places a preload adjuster over a progressive rate spring in one leg and an aluminum-bodied, sealed cartridge damper on the other providing superior damping and ride control combined with tunable preload and a new benchmark for high performance suspensionImproves resistance to front brake dive, front end stability, cornering and bottoming controlAdjustable to standard length or to lower the front end up to 1”Complete fork internal replacement kitNo modification for forks requiredMade in the U.S.A