Uflex front mount helms feature a stainless steel shaft for increased seal longevity and are a direct “drop in” replacement. Compatible with competing cylinders, hoses, fittings and oil, the UP series helms come in 1.5, 1.7, 2.0 and 2.4 cubic inch displacements. The standard UP series helms feature a 1000 Psi relief valves. The Silver Steer SVS helms which are recommended for high performance high rudder torque applications feature 1500 Psi relief valves.