GTB RACING 1:5 Scale RC Gasonline Car HPI Baja New 4 Wheel Hydraulic Disc Brake System. 2:The use of ultra-small split fixed dynamic super sports red calipers. 1: The use of leverage design to increase four main pump the brakes fixed split, custom oil pot seals, automatic fill oil, drained, riveting seal the filling hole, so that.
eBay