The ProPort was a result of over 25 years of Blow Off Valve manufacturing experience and 12 months of internal development

Suitable for certain Abarth

Milspec hard-anodized valve guide and stem

BMW e36 Coilover Kit with 10kg Front and 5kg Rear springs

Adjustable shock motion ratio

BOV Race Port Gen-V Supercharger - Blue JR42 The ProPort was a resultThe Race Port is famous for being an amazingly small and light BOV for supercharged competition level engines. Featuring our unique collar design and internal flow structures, it is 50% lighter and 25% smaller than the competition while flowing 330 CFM making it the highest flowing BOV of its type on the market. The supercharger specific Race Port features a soft spring so it can stay open at idle, when the supercharger is still producing boost.