Standard plastic bypass valves like those fitted to the Cooper S from the factory struggle to withstand increased boost pressures

V-Band clamp

Gen-V WG45/50 Cap Blue

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Featuring a return hose for hi-flowing Plumb Back Performance and a direct fit Billet Aluminium Valve utilizing a 38mm / 1

BOV Dual Port Mitsubishi-Red Aksler Standard plastic bypass valves likeEasy to install and setup, the Mitsubishi Dual Port features sequential ports for quiet operation on mild boost and full performance at full boost. SUPPLIED WITH: Blanking Plug, and Yellow Spring rated 22 to 20 InHg (installed). Second trumpet and hose blanking plugs sold separately. \t\t\t\t\t\t \t\t\t\t\t