aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L HYSLRG11M61 Five-Rib Aluminum Insulator

Five-Rib Aluminum Insulator

Bump Stop Rod Guide Protector

1972-1973 Mazda RX-2

to allow driver to hear what they need to hear

seamless teamwork

aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L HYSLRG11M61 Five-Rib Aluminum InsulatorSilver 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.