The Race Port blow off valve from Turbosmart is constructed from tough and durable billet aluminium designed to offer superior flow and performance.The Race Port now features a 52mm oversize inlet with 50mm piston making it the largest and highest flowing valve in the range. The lightweight and compact (now 46% lighter and 25% smaller than old Race Port) blow off valve is ideal for high horsepower, turbo or supercharged racing applications and are supplied with quick release clamps for easy installation and removal with a choice of available colours. The Race Port Blow Off Valve has been designed with competition applications in mind and has the ability to operate in systems over 800 BHP, maintaining protection for the turbocharger by reducing cavitation on throttle off and inbetween gear changes. The Valve internals have been developed for durability with a silicone nomex diaphragm and billet piston ensuring a 'fit and forget' solution.Fitted in all manner of competition applications