Killer B Knob Extension - 2004-2018 Subaru STI / 2015-2021 WRX / 2013-2021 BRZ / Scion FR-S / 2007 Legacy SpecB / 2007-2014 Outback PDM_tools This leads to dangerous engine

This leads to dangerous engine conditions and check engine lights

Developed over years of rigorous testing on various standard and competitive applications

Seibon Carbon Fiber OE Style Hood

The CSF radiator mounts in the factory location and requires no modifications or cutting

while still maintaining fast spool characteristics

Killer B Knob Extension - 2004-2018 Subaru STI / 2015-2021 WRX / 2013-2021 BRZ / Scion FR-S / 2007 Legacy SpecB / 2007-2014 Outback PDM_tools This leads to dangerous engineKiller B Motorsport Knob Extension Our knob extension places our Delrin WRC Knob 3 inches higher for improved ergonomics. Must be used with WRC Knob