Phantom Bump Stops Bump Stops are rubber suspension parts attached to front shocks to limit shock travel. Bump Stops usually fit into a small cup that slides on the shock. There can be a number of different sizes and levels of hardness that will work best, depending on the car, track and strategy. Bump Stops - Rounded Edge Soft 20 duro 70-3379-32 Medium 45 duro 70-3380-32 Hard 60 duro 70-3381-32 X-Hard 80 duro 70-3382-32
