Arrma ARA330610 Shock Set 190mm (Pair) Kraton 4X4 8S Outcast 8S Blitz Parts Universal large scale RC applications using Universal large scale RC applications using a compatible motor measuring approximately 55–58mm in diameter Roto Start back plate for the F & G Series Nitro Star Engines that use a 14mm hex one way bearing High quality materials Supplied assembled without springs Pre filled with 500cSt silicone shock oil Ready to bolt on to your vehicle after fitting your choice of spring Threaded spring preload adjusters included for fine tuning of vehicle ride height This assembled 190mm Shock Set provides ideal replacement parts for your kit supplied items