Exhaust

The original Pro Circuit Works pipe offers unparalled performance and power for every two-stroke application. Increased horsepower and torque gains will quickly be noticed across the entire rpm range. The unplated, oiled metal finish requires some...

The original Pro Circuit Works pipe offers unparalled performance and power for every two-stroke application. Increased horsepower and torque gains will quickly be noticed across the entire rpm range. The unplated, oiled metal finish requires some...

The original Pro Circuit Works pipe offers unparalled performance and power for every two-stroke application. Increased horsepower and torque gains will quickly be noticed across the entire rpm range. The unplated, oiled metal finish requires some...

The Type 296 Spark Arrestor is specially engineered with an internal metal baffled chambersSound absorbing materials for a muffled exhaust sound and no loss of motor performanceThe desired sound level is at or near 96dB on most models

The Ti-6 Titanium Exhaust System is designed to improve performance and power over previous designs. Constructed of titanium throughout the head pipe, mid pipe and canister, this is the ideal exhaust for any off-road or closed course racer looking for...

If you are competing in a AMA Supercross or AMA Motocross series, the Ti-6 Pro Titanium Exhaust System is perfect for you. Created as a full race closed course system, the Ti-6 Pro is designed to increase performance and help professional racers pass...

The Ti-2 is similar to the popular R-304 Silencer except it is constructed with a Carbon Dupont™ Kevlar® shell, Titanium tubing and end caps. The Titanium and Carbon Dupont™ Kevlar® construction offers the “FACTORY” look and appearance while reducing...

The Ti-2 is similar to the popular R-304 Silencer except it is constructed with a Carbon Dupont™ Kevlar® shell, Titanium tubing and end caps. The Titanium and Carbon Dupont™ Kevlar® construction offers the “FACTORY” look and appearance while reducing...

The T-4 System is a tunable version of our more exotic Ti-4R System. RC-4 Resonance Chamber has been added to the head pipe to reduce noise. (The RC-4 Resonance Chamber, depending on year of your bike, might not come with the system.)

Pro Circuit Spark Arrestor Screen Old Style Up To '06 Pc4000-0000

The compact design of the R-304 Silencer offers optimum performance gains and is recommended for closed-course racing only. Hex head screws are used to secure the inlet cap and can be removed easily for quick re-packing of the silencer.

Unparalleled performanceIncrease in horsepower and torque gains will be noticed across rpm rangeElectroless nickel plating increases part life 2-10x longerStamped AKDQ high quality carbon steelHand welded and pounded seamsNot legal for use in California...