The new big valve version is designed for builds with 2.7" bores and bigger . It has both bigger valves and bigger (correctly sized) larger ports than the std SBH. It utilizes an efficient 18cc combustion chamber.

This head will help your big bore build reach its full potential! Optimized for bottom end pull and still able to hit high horsepower numbers on the larger displacement >236cc builds.

DED Racing has taken its 20 years of air cooled cylinder head development experience and integrated it into their new billet Honda/Clone head. Introducing the SBH designed to be an affordable upgrade of modified cast heads. With its integrated rocker arms, superior flow, and rigidity, it offers performance and value that can't be matched by a cast head or even other billet heads. It is designed to be a true bolt-on product where the critical items are included, so you don't have to search far and wide to get your project together. This also allows them to ensure that things like rocker arm geometry is optimized and perfect. (Simply, More Powerful- This is a product to make your sport more fun, not more frustrating).