Kartboy Short Throw Shifter STI (2004-2018) Speedwell Wheels The straight through mufflers are

The straight through mufflers are designed to optimize horsepower with very little restriction

This kit includes the OEM Subaru mount plate part #'s are 41031AA281 & 41031AA290

Available in stainless steel or black powder coat finish

The specific timing of when the reflected sound waves re-join the main exhaust flow creates a one-hundred-and-eighty-degree out-of-phase sound wave that cancels out problematic frequencies

Kartboy Short Throw Shifter STI (2004-2018) Speedwell Wheels The straight through mufflers areThis Kartboy Short Shifter for these 2004+ Subaru STI features an overall shift throw decrease of 40%, providing a noticeable difference and a solid feel. The shift knob height will drop 1" as well. This Kartboy short shifter for the Subaru STI is constructed of CNC'd and TIG welded 4130 Cr Mo steel. It will install with simple mechanic's tools in under 30 minutes. Made in the USA.