By dissipating the hot exhaust gasses more efficiently, the APS DR Series race exhaust lowers the thermal load on vital engine components such as pistons, combustion chambers, valves etc., particularly at high horsepower levels. Another significant benefit of the DR Series race exhaust is better transfer of exhaust gas energy to the turbocharger which results in faster turbocharger spool-up and more efficient turbocharger operation at high power levels.

A great deal of development effort has also been put into accentuating the deep Subaru boxer engine note - this exhaust is not for the faint hearted and guaranteed to excite!

The comprehensive APS DR Series 3.5" Turbo to Tip Race Exhaust system includes the innovative APS High Flow Turbine Outlet manufactured from Ni Resist iron, 3.5" internal diameter 304 grade down pipe, 304 grade 3.5" internal diameter intermediate pipe with true 3.5" internal diameter resonator, Highly polished 304 grade 3.5" muffler and tip assembly, all mounting hardware, gaskets, stud, nuts etc. for easy installation.