Injection models-Standard bore Budget priced LCB (1-3/4"id).
With pre cast flanges to improve flow and save engine tuners time matching the ports. This is for injection type cars only because it has a sensor hole. The Long Centre Branch design has been proven to be the best all-around for our 5 port cylinder heads. Bore diameter being the only other variable. Has all fixing clamps plus the exhaust downpipe to manifold clamp.