HKS Super Manifold with Metal Catalyzer GT-Spec - GT86, BRZ i30N In addition

In addition

By following this requirement

This big brake kit has been developed for all-around high level performance from street to circuit/Time-Attack applications

Maintain proper braking performance operation under hard braking applications

HKS Super Manifold with Metal Catalyzer GT-Spec - GT86, BRZ i30N In additionThis item is a direct replacement for the highly restrictive factory catalytic converter and exhaust manifold. Superior materials and design with honeycomb structure metal catalyzer allows for high flow of exhaust while keeping exhaust gases clean. Smooth flowing mainpipe with enhanced diameter allowing engine to exhale the hot exhaust gases more efficiently improving engine response and increasing power and torque throughout the whole power band. In