The ARK R-Spec 4-1 Header is designed to racing spec. The header is semi-brushed and mirror polished, it has CNC mandrel bent primaries, TIG welded connections, and de-burred and ported inlets/outlets for the best and smoothest flow. These are designed to get the most out of high revving motors. These have been dyno proven to increase horsepower and torque from mid-range to redline! The primaries exit into a special laser guided designed merge equal collector allowing smooth exhaust flow, most ideal for racing applications.
ARK Advantages and Features:
– All Bolt-on System
– SUS304 Stainless Steel Construction
– Fully Polished Finish
– CNC Machined Flanges
– 1.75” Primaries to 2.00” Collector
– Dyno Proven HP and TQ!
– Optional 2.5” Test Pipe
Headers, Test Pipe (Optional), Installation Guide.