Exhaust Inserts

Exhaust Inserts: drop your volume without swapping the whole system

Exhaust inserts are removable baffles or silencers that slide into the tip or outlet of a slip-on or aftermarket exhaust. The job is simple mechanical restriction: the insert narrows the exit path and adds internal packing or a perforated core, so the note calms down while the rest of your exhaust stays exactly as installed. Riders and drivers fit them when a system that sounds right on the highway is too loud in a garage, a track paddock, or a neighborhood at 6am. Pull the insert back out and you're back to the full open note in a couple of minutes.

What ThreePiece stocks

This category holds 10 exhaust inserts in stock, with current prices running from $29 to $93 for what's on the shelf right now. That spread is not a promise - it moves as stock changes. Four brands are represented: HKS, Big Gun, Bikers Choice and Vance and Hines. On the higher end sit the Vance & Hines H.O. Slip-Ons Quiet Insert and the HKS Black Silencer for 120mm tip exhausts. There's also the HKS Silencer for 96mm tip exhausts, the V&H Quiet Sound Insert (each), and two Big Gun Vortex options - the 5in Vortex 2 and the shorter 2in Vortex.

How to choose

The one number that matters most is tip diameter. An insert has to match the outlet it fits - the HKS silencers here are split explicitly by tip size, one for 120mm tips and one for 96mm tips, so measure your outlet before you buy. Length is the second call: the Big Gun Vortex comes in a 5in and a 2in version, and a longer body generally means more restriction and quieter running, while a short insert takes the edge off with less packaging inside the pipe. Motorcycle-style slip-ons lean toward the Vance & Hines and Bikers Choice inserts; the HKS silencers are sized for round automotive tips. Match the brand to the system you already own where you can - an insert is designed around a specific outlet, not a universal fit.

What else you need

An insert only makes sense once you have the system it fits into. Browse the parent Exhaust section, or the sibling categories that carry the systems these inserts drop into: Cat-Back Exhaust, Axle-Back Exhaust Systems, Mufflers and Exhaust Tips. If you're building up from bare pipe, look at Headers as well.

Fitment and ordering

None of the inserts in this category carry vehicle fitment data, so choose by tip diameter and system brand rather than by make and model, and call before you order if you're unsure. Fitment help is available by phone at 813-535-5801, or reach the team through contact us. Every order ships with free shipping, and Affirm and Katapult financing is available at checkout.

Exhaust Inserts: drop your volume without swapping the whole system

Exhaust inserts are removable baffles or silencers that slide into the tip or outlet of a slip-on or aftermarket exhaust. The job is simple mechanical restriction: the insert narrows the exit path and adds internal packing or a perforated core, so the note calms down while the rest of your exhaust stays exactly as installed. Riders and drivers fit them when a system that sounds right on the highway is too loud in a garage, a track paddock, or a neighborhood at 6am. Pull the insert back out and you're back to the full open note in a couple of minutes.

What ThreePiece stocks

This category holds 10 exhaust inserts in stock, with current prices running from $29 to $93 for what's on the shelf right now. That spread is not a promise - it moves as stock changes. Four brands are represented: HKS, Big Gun, Bikers Choice and Vance and Hines. On the higher end sit the Vance & Hines H.O. Slip-Ons Quiet Insert and the HKS Black Silencer for 120mm tip exhausts. There's also the HKS Silencer for 96mm tip exhausts, the V&H Quiet Sound Insert (each), and two Big Gun Vortex options - the 5in Vortex 2 and the shorter 2in Vortex.

How to choose

The one number that matters most is tip diameter. An insert has to match the outlet it fits - the HKS silencers here are split explicitly by tip size, one for 120mm tips and one for 96mm tips, so measure your outlet before you buy. Length is the second call: the Big Gun Vortex comes in a 5in and a 2in version, and a longer body generally means more restriction and quieter running, while a short insert takes the edge off with less packaging inside the pipe. Motorcycle-style slip-ons lean toward the Vance & Hines and Bikers Choice inserts; the HKS silencers are sized for round automotive tips. Match the brand to the system you already own where you can - an insert is designed around a specific outlet, not a universal fit.

What else you need

An insert only makes sense once you have the system it fits into. Browse the parent Exhaust section, or the sibling categories that carry the systems these inserts drop into: Cat-Back Exhaust, Axle-Back Exhaust Systems, Mufflers and Exhaust Tips. If you're building up from bare pipe, look at Headers as well.

Fitment and ordering

None of the inserts in this category carry vehicle fitment data, so choose by tip diameter and system brand rather than by make and model, and call before you order if you're unsure. Fitment help is available by phone at 813-535-5801, or reach the team through contact us. Every order ships with free shipping, and Affirm and Katapult financing is available at checkout.