Are you disappointed in the current universal valved muffler offerings? Valves rattling and/or breaking? Poor sound quality?  Introducing the World highest quality universal valved muffler, complete with electronic valves that are guaranteed not to...

Genuine HJS Tuning catalytic converter cores for replacement/upgrade of restrictive factory cats.  This is an individual catalyst; welding required                            ...

Genuine HJS Tuning catalytic converter cores for replacement/upgrade of restrictive factory cats.  This is an individual catalyst; welding required.                          ...

Genuine HJS Tuning catalytic converter cores for replacement/upgrade of restrictive factory cats.  This is an individual catalyst; welding required.                            ...

Genuine HJS Tuning catalytic converter cores for replacement/upgrade of restrictive factory cats.  This is an individual catalyst; welding required.                           ...

Genuine HJS Tuning catalytic converter cores for replacement/upgrade of restrictive factory cats.  This is an individual catalyst; welding required.                          ...

Fabspeed's Valvetronic Controller Kit is an add on option for our Valvetronic Exhausts that have valve control in the vehicle from the factory. This kit allows on demand control of the valves in the Fabspeed exhaust independent of the vehicle mode and...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...

The Forza Componenti exhaust valve controller kit is the complete solution that allows the user to take full manual control of the vehicle's vacuum-actuated exhaust bypass valves. The controller has a circuit board that controls the negative side of the...