Go Fast Bits Respons Bypass Valve WRX (2002-2007) STI (2004-2018) Porsche This Rally Armor urethane (UR)

This Rally Armor urethane (UR) mud flaps for the 2014+ Mazda3 have a black flap and white logo and features 3D scanned precision fitment

These new mufflers maintain a straight-through design that aids in exhaust gas flow and maximum power potential but keep sound pressure levels reasonable at idle and while cruising

The airflow straightener improves MAF readings by forcing incoming airflow into a uniform profile

-Machined Aluminum Mounts - anodized black for a sleek look and corrosion resistance

VW Golf R MK6 and MK5 2006-2008

Go Fast Bits Respons Bypass Valve WRX (2002-2007) STI (2004-2018) Porsche This Rally Armor urethane (UR)The Go Fast Bits Respons blow off bypass valve system for WRX STI Forester is much more than simply a noise maker or a factory valve replacement. The Go Fast Bits Respons valve features the GFB Turbo Management System (TMS), designed specifically for the purpose of turbo lag reduction. Go Fast Bits in house testing facilities have measured a return to peak boost up to 30% faster between shifts than most factory systems, giving you quicker on off boost