For models fitted with late model 36mm Dellorto Carburettors. Manifold Rubber venturi bore diameter is 38mm

The original manifold rubber is longer available. Note: This rubber is 3mm shorter than OEM part. To gain the extra depth it is possible to remove the inner ridge to allow the carb to locate closer to the alloy manifold.

This is the best option if you want to retain original appearance or use the alloy manifold as part of a porting transition.

You may also like to consider upgrading to the RGS Style Manifold

or 36mm SFC Syle Manifold