GrimmSpeed Unequal Length EJ Series Exhaust Manifold 2008-2014 WRX / 2004-2021 STI YR_2017 While the aluminum wrench is

While the aluminum wrench is perfect for initial tightening and adjustments

Its robust 25-row design offers enhanced heat dissipation

Whether you want to improve your car’s handling or upgrade its visual appeal

The deep thin socket design fits recessed wheels perfectly

GrimmSpeed Unequal Length EJ Series Exhaust Manifold 2008-2014 WRX / 2004-2021 STI YR_2017 While the aluminum wrench isGrimmSpeed proprietary Unequal Length Header design features an innovative runner layout that delivers the iconic Subaru rumble without sacrificing the performance benefits of equal length engineering. Each bank of runners is equal in length to itself, but one bank is 1. 5 longer than the otherallowing for a deep, classic boxer sound while maintaining exceptional exhaust tuning and flow. To ensure smooth, uninterrupted exhaust travel, we use single