aFe Silver Bullet Throttle Body Spacers TBS Jeep Wrangler (TJ YJ) 91-06 4.0L 1999 Turn up your Dodge Challenger's

Turn up your Dodge Challenger's exhaust note while maintaining a mild interior sound level

5in x 4in PRO-XS Muffler

How are bushings manufactured

5 Seal Head Assembly 7/8in Shaft

aFe Silver Bullet Throttle Body Spacers TBS Jeep Wrangler (TJ YJ) 91-06 4.0L 1999 Turn up your Dodge Challenger'saFe Silver Bullet Throttle Body Spacers TBS Jeep Wrangler (TJ YJ) 91 06 4. 0L 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