Turbosmart Shortie Kompact Series valves have been specifically designed to suit BorgWarner EFR and KKK turbos. They also fit the popular Ford Ecoboost engines. Unlike the standard, plastic valves that use un-reinforced diaphragms and are known to crack under increased boost, the new BW/KKK/Ecoboost Kompact valves use O-Ring sealed piston which, coupled with their billet aluminium construction give them over 30PSI boost handling capability. Designed as a bolt-on replacement of the factory valve on all BorgWarner EFR, KKK and most Ecoboost turbos, the Kompact Shortie Plumb Back provides better boost response and greater boost handling capability.