LEGAMAX PREMIUM Exhaust For STI

The concept is a complete exhaust system for the WRX STi Designed for "High exhaust efficiency". its special design enabled a full 75mm layout, which is larger than stock (60mm) and the HKS LEGAMAX 

For the ultimate in exhaust efficiency, the HKS Bellmouth Downpipe, Center Pipe and main muffler (rear Section) are available as a complete unit. This configuration enables a full 75mm layout from the turbine outlet that is unavailable with stock replecement type exhaust and components.

*Pipe and flange diameter of exhaust system that are compatible with stock front pipes become narrow at the connection point. Stock exhaust system is 60mm, HKS Legamax Premium is 65mm layout