This is an O-Ring Replacement Kit for 6359-00 and 6359-01 PowerStroke Shocks. Is it time to rebuild your ARRMA® PowerStroke shocks? Pro-Line has you covered with the O-Ring Replacement Kit (6359-02) that includes all necessary O-Rings and hardware needed to rebuild 2 shocks. Fits: 6359-00 Pro-Line Front PowerStroke Shocks for ARRMA® 3S and 4S vehicles 6359-01 Pro-Line Rear PowerStroke Shocks for ARRMA® 3S and 4S vehicles