Set of two (2) PhatDad-RC V2 shock shaft kits for your HPI Baja 5B, SS and 5-T. These new V2 shock shafts are made from a incredible strong heat treated 17-4 stainless steel. The new shafts are 4.8 mm in Dia. Shock shaft damping disk rests on a steel washer not a c-clip. Stock and replaceable HPI part # 85410 modified for 4.8 mm shaft ( 11/64 in bore ) These shock kits have always been the racers favorite. You have a smaller dia shock shaft, lighter weight shock that allows more oil volume in the the shock body. Smoother handling. Longer lasting fade resistant shock when racing those 30 min A-mains. Team PhatDad-RC races and bashes all our parts before they go into your hands. Size is not everything anymore when it comes to shaft strength. You will not be disappointed with the V2. They are incredible strong and corrosion resistant. The V2s are compatible with the HPI Baja RTR, SS, and the new 5-T shocks. Your SS and 5-T shock shaft damping disks are a direct fit on the V2s with no modifications needed. We strive to make our parts the best your hard earned money can buy. Warranty and contact information on inside of product hanger tag. Thank you for your continued support.