Afe 46-31009 AFE Silver Bullet TBS engine-gaskets-seals-top-end-gasket-kits 1985-1990 Harley Davidson FXST Softail

1985-1990 Harley Davidson FXST Softail Standard

2020-2021 Honda TRX520FE2 FourTrax Foreman 4x4 ES EPS

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Greatly reduces mud and crud contamination

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Afe 46-31009 AFE Silver Bullet TBS engine-gaskets-seals-top-end-gasket-kits 1985-1990 Harley Davidson FXST SoftailSilver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T 6061 billet aluminum and using a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.