aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L MT110BK Threaded aluminum bolt is 6"

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

Their optimized winding

Standard Motor Products SMP Fd-488

All racing pants are assembled with heavy-duty

3-1/4 in Long

aFe Power Silver Bullet Throttle Body Spacer - Honda Civic Si 12-15 L4-2.4L MT110BK Threaded aluminum bolt is 6"Silver 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.