aFe Silver Bullet Throttle Body Spacer Kit - 2021-2023 Subaru Crosstrek Subaru-Outback-2010 available in two different designs:

available in two different designs: Type 1

With well over a year of development and now multiple national championships

Stopper style

0-150PSI readout

Unlike outdated methods that involve gutting the OEM valve and leaving behind a leftover cavity with small holes and a sleeve that blocks the bleeder valve

aFe Silver Bullet Throttle Body Spacer Kit - 2021-2023 Subaru Crosstrek Subaru-Outback-2010 available in two different designs:The Serrated Helix combination design creates intake turbulence in the combustion chamber. This turbulence breaks up the fuel which creates a more complete combustion cycle increasing horsepower, torque and improving throttle response. The Serrated Helix combination design also reduces intake whistle that occurs with Helix only designs. All Silver Bullet Throttle Body Spacers are constructed from 6061 T6 billet aluminum precision machined for light