ARRMA ARA330741 Shock Bladder (4) 8S / These high-quality Shock Bladders are the perfect item for servicing the shock absorbers on your vehicle. Features strong and flexible silicone rubber material for long-lasting performance in extreme conditions, provided in a set of four to service the shocks on one vehicle, deep profile provides the volume compensation required when using 6mm thick shock shafts. Includes 4 x Shock Bladder.