aFe Silver Bullet Throttle Body Spacer Kit - 2021-2023 Subaru Crosstrek Subaru-Outback-2010 IAG's in-house honing process sets

IAG's in-house honing process sets custom piston-to-wall clearances to ensure performance and reliability

T304 Stainless Steel

1/4" thick CNC-laser cut bracket

Black anodized finish for lasting durability

aFe Silver Bullet Throttle Body Spacer Kit - 2021-2023 Subaru Crosstrek Subaru-Outback-2010 IAG's in-house honing process setsThe 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