aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L MT110BK 300 lb/in Rate

300 lb/in Rate

3-1/4 in Long

Standard Motor Products SMP Fd-488

020'' valves might require aftermarket pistons notched for valve clearance

Threaded aluminum bolt is 6" long with 1-1/8"-12 fine threads and is commonly used on big bar

aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L MT110BK 300 lb/in RateSilver 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.