Pro Circuit

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...

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...

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 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 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...

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...

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...

The Type 296 Spark Arrestor is specially engineered with an internal metal baffle, chambers and sound absorbing materials for a muffled exhaust sound and no loss of motor performance. The desired...

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 304 silencer is recommended for most two-stroke applications. The slightly longer body offers reduced noise output when compared to the R-304. The brushed aluminum body, stainless steel inlet...

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...

A must-have item for any off-road motorcycle, stock or modified. You will benefit from increased clutch life with our high performance springs.12-15% stiffer than stockMore positive clutch...

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...

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...