aFe Silver Bullet Throttle Body Spacers TBS Dodge Trucks 94-01 V8-5.2/5.9L 2021-gmc-sierra-1500-elevation-esi3536861 This system does NOT include

This system does NOT include a resonator

The S-Type sound level provide the classic Borla(r) sound with no drone

quicker shifting and reduced clutch wear

Our Super Duty bed channel stiffeners

aFe Silver Bullet Throttle Body Spacers TBS Dodge Trucks 94-01 V8-5.2/5.9L 2021-gmc-sierra-1500-elevation-esi3536861 This system does NOT includeSilver 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.