Boomba Recirculating Bypass Valve Subaru STI 2004-2021 - Natural Aluminum | 001000220000 Wheel Offset_46mm These NGK Iridium IX spark

These NGK Iridium IX spark plugs are a nice upgrade that have a one step lower heat range than OEM for heavily modified and tuned RS and STs that still feature NGK's legendary reliability and performance

26mm 2-Position Adjustable Solid Front Bar

Advanced Technosynthese lubricant for High Performance and High Protection

They also do not suffer from the problem of the engine sitting too high which can happen with OEM style mounts made in harder rubber

Boomba Recirculating Bypass Valve Subaru STI 2004-2021 - Natural Aluminum | 001000220000 Wheel Offset_46mm These NGK Iridium IX sparkFitment Information: 2004 2021 Subaru STI 2002 2007 Subaru WRX Features: The Boomba Racing high performance recirculating BPV has been designed to be a replacement for the OEM bypass valve and is precision machined out of aircraft grade billet aluminum. It features an internal brass piston design and is pressure tested to withstand over 70psi, allowing it to compliment even the most aggressive turbo builds. Higher spring pre load allows for more boost