4 Stroke Exhaust

Fits The Following Bikes: Honda CRF450R 2021-2022 Exhaust Description:  The Ti-6 Titanium Exhaust System is designed to improve performance and is constructed of titanium throughout the head pipe, mid pipe, and canister while the end-cap is constructed of carbon fiber. The Ti-6 is ideal...

Fits The Following Bikes: Honda CRF125F 2019-2020 Exhaust Description: The T-6 exhaust system contains a stainless steel head pipe, brushed aluminum canister and a carbon fiber end-cap for added durability and a professional look. This exhaust system features the same benefits as the T-6...

Packing Size: 9" x 3.5" Packing Description: Each silencer packing kit includes all the packing and hardware needed to keep your bike running quietly and at its very best. Pro Circuit recommends re-packing your exhaust every 10-15 hours, but it varies between riders.  For...

Packing Size: 14" x 4" Packing Description: Each silencer packing kit includes all the packing and hardware needed to keep your bike running quietly and at its very best. Pro Circuit recommends re-packing your exhaust every 10-15 hours, but it varies between riders. For...

Packing Size: 14" x 3.5" Packing Description: Each silencer packing kit includes all the packing and hardware needed to keep your bike running quietly and at its very best. Pro Circuit recommends re-packing your exhaust every 10-15 hours, but it varies between riders. For...

The T-6 Stainless Steel Slip-On Silencer is designed for a rider looking for an inexpensive, easy-to-install, durable performance silencer that can bolt onto their stock head pipe. This slip-on silencer comes with a stainless steel end-cap and an aluminum canister for increased durability. Although...

Fits The Following Bikes: Yamaha TT-R125 2000-2023 Exhaust Description: The T-6 exhaust system contains a stainless steel head pipe, brushed aluminum canister and a carbon fiber end-cap for added durability and a professional look. This exhaust system features the same benefits as the T-6...

Fits The Following Bikes: Honda XR80R/100R 2001-2003 Honda CRF80F/100F 2004-2013 Exhaust Description: The T-4 System is designed to increase performance from bottom to top, making it easier to ride faster. The stainless steel and aluminum construction offer increased strength and durability; ideal for racing...

Fits The Following Bikes: Honda CRF110F 2019-2023 Exhaust Description: The T-6 exhaust system contains a stainless steel head pipe, brushed aluminum canister and a carbon fiber end-cap for added durability and a professional look. This exhaust system features the same benefits as the T-6...

Size: 3.5" Diameter Stainless End-Cap Description: The Pro Circuit Stainless Steel End-Caps are sold individually. Call for applications. Note: 2007/2008 inserts will NOT fit older model end caps.

Size: 4.0" Diameter Stainless End-Cap Description: The Pro Circuit Stainless Steel End-Caps are sold individually. Call for applications. Note: 2007/2008 inserts will NOT fit older model end caps.

Size: 1 1/2" x 100 4" Flat Base (Euro) Stainless Insert Description: The Pro Circuit Stainless Insert is available in multiple sizes to make your motorcycle quieter, without the loss of power. These inserts are available for both the 4" canister and 3.5" canister. Call...

Fits The Following Pro Circuit Exhaust: 3.5" cans CRF Duals & Minis Screen Size: 1 1/2" Spark Arrestor Description: This Pro Circuit Spark Arrestor is United States Forest Service approved (USFS), and will fit 3.5" or 4" four-stroke silencer cans. This is a 1...

Fits The Following ATVs: Arctic Cat DVX400 2004-2007 Kawasaki KFX400 2003-2009 Suzuki LT-Z400 2003-2008 Head Pipe Description: Pro Circuit's Stainless Steel Head Pipes are designed as a replacement for the stock head pipe. Hand assembled, and built to enhance low-to-mid-range rpm power, Pro Circuit...

Fits The Following Bikes: Yamaha YZ250F 2014-2016 Exhaust Description:  The Ti-6 Titanium Exhaust System is designed to improve performance and is constructed of titanium throughout the head pipe, mid pipe, and canister while the end-cap is constructed of carbon fiber. The Ti-6 is ideal...

Fits The Following Bikes: KTM 450 SX-F 2019-2022 KTM 450 SX-F Factory Edition 2018 KTM 450 XC-F 2021 Husqvarna FC 450 2019-2022 Husqvarna FC 450 Rockstar Edition 2018 GasGas MC 450F 2021-2022 Exhaust Description:  The T-6 Stainless Steel Exhaust System offers maximum performance and...

Fits The Following Bikes: KTM 450 SX-F Factory Edition 2016 1/2 KTM 450 SX-F 2017-2018 Exhaust Description:  The T-6 Stainless Steel Exhaust System offers maximum performance and is constructed of stainless steel throughout the head pipe, mid pipe and end-cap while the canister is...

Fits The Following Bikes: KTM 350 SX-F 2016-2018 Husqvarna FC 350 2016-2018 Exhaust Description:  The T-6 Stainless Slip-On Silencer is designed for a rider looking for an inexpensive, easy-to-install, durable performance silencer that can bolt onto their stock head pipe. This slip-on silencer comes with...

Fits The Following Bikes: KTM 350 SX-F 2016-2018 Husqvarna FC 350 2016-2018  Exhaust Description:  The T-6 Stainless Steel Exhaust System offers maximum performance and is constructed of stainless steel throughout the head pipe, mid pipe and end-cap while the canister is aluminum. The T-6...

Exhaust Description: The T-6 Stainless Steel Exhaust System offers maximum performance and is constructed of stainless steel throughout the head pipe, mid pipe and end-cap while the canister is aluminum. The T-6 is perfect for any closed-course or off-road racer looking for improved performance,...