ISR Performance Universal Exhaust Silencers - 4"

Our universal 4" exhaust silencer. Same idea as our 3" silencer, sized for the 4" tips on our GT Single, OMS Spec, and other ISR exhausts that run a single 4" or dual 4" outlet.

What It Does

Slides into the 4" tip of your exhaust to drop the volume for sound-limited track events, late-night drives, or any time the full tone of your aftermarket exhaust is more than the moment calls for. Held in place by a set screw that locks into a hole drilled through the exhaust tip. Pops back out when you're ready to let the exhaust breathe.

Fitment

Universal. Works with any exhaust system that has 4" tips. Your exhaust will need to be drilled for the silencer set screw hole; the set screw itself is not included.

Product Details

Brand: ISR Performance

Part Number: IS-UNIS-4

Type: Universal Exhaust Silencer

Tip Size: 4"

Installation: Set screw retention (drilling required, set screw NOT included)

Application: Universal, any 4" tip exhaust

Sold: Individually

Related: IS-UNIS-3 for 3" tip exhausts

Legality: Off-road and competition use only