Vacuum exhaust valves allow mild sounds while streeting, and roaring exhaust sounds on the track.
A valve can open and close the exhaust flow. Examples of use are a screamer pipe directly after the downpipe, or a muffler bypass.
Available in 2.25", 2.5" or 3" diameters as vacuum controlled. Buy or view items
Fits inside a 2.5" exhaust tubing. When installed at the end of an exhaust system, helps lower especially low frequency noise.
Total length 285mm. Buy or view items
Exhaust reducers in stainless or mild steel.
Models with three diameters can be cut to fit a pipe with the middle diameter as well.
An exhaust pipe reducer allows a diameter change with minimal flow restrictions. Buy or view items