DOC Race Open T4 Topmount available for RB20/25/26
-Single MVR 44mm Wastegate flange or Twin MVS 38mm Flanges
"The DOC Race RB Topmount manifold is for the more extreme setup looking for the potential limit of the vehicles engine. The DOC Topmount manifold can still be used for “streetable” vehicles, but is solely designed to make maximum horsepower and allow you to fit Larger Frame Turbo's. D.O.C. still applies our elaborate porting process to complement maximum flow within ALL of our manifolds."
