The 304 silencer is recommended for most two-stroke applications. The slightly longer body offers added top end performance while reducing noise output. The brushed aluminum body and stainless steel inlet tube and end-cap gives you a silencer that looks as good as it performs....

Used by the Monster Energy/Pro Circuit/Kawasaki Race Team, the Pro Circuit Shift Lever is CNC machined from billet 6061-T6511 aluminum and hard anodized with stainless steel spring and hardware, making it stronger than a stock part and more able to resist wear, bending and...

Pro Circuit's Billet Cam Cover is machined from aircraft-grade aluminum, anodized red and hand polished for a true works look. 

Fits The Following Bikes: Yamaha YZ450F 2014-2017 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 a stainless steel end-cap and...

KTM250SXF 11-12 T-5 Carbon System

The header pipe is a critical part of your exhaust system, and once in a while you may crash, or get a rock to the head pipe causing damage which could result in losing power. This replacement is perfect for those unfortunate accidents, and...

Head Pipe Description: The header pipe is a critical part of your exhaust system and once in a while you may crash or take a rock to the head pipe causing damage which could result in lost power. This OEM replacement head pipe is...

The head pipe is a critical part of your exhaust system, and once in a while you may crash, or get a rock to the head pipe causing damage which could result in losing power. This replacement is perfect for those unfortunate accidents, and...

Fits The Following Bikes: KTM 125/150 SX 2016-2018 Husqvarna TC 125/150 2018 Husqvarna TE 150 2019 Pipe Description: The original Pro Circuit Works Pipe offers unparalleled performance and power for every two-stroke application. Increased horsepower and torque gains will quickly be noticed across the...

The head pipe is a critical part of your exhaust system, and once in a while you may crash, or get a rock to the head pipe causing damage which could result in losing power. This replacement is perfect for those unfortunate accidents, and...

Fits The Following Bikes: 65's and up   Banjo Bolts Description: Pro Circuit Banjo Bolts can be fastened onto the front and rear brake master cylinders, as well as the front and rear brake calipers to achieve that "works look". Banjo Bolts are machined...

Silencer Description: The R-304 silencer was developed as a full-race two-stroke silencer. The compact design of the short aluminum canister 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...

Fits The Following Bikes: Kawasaki KX250 2017-2023 Kawasaki KX450 2016-2023   Axle Blocks Description: The Pro Circuit Axle Blocks are CNC-machined from aircraft quality billet aluminum for light weight and durability. The axle blocks have easy-to-see adjustment lines for quick and accurate wheel alignment....

Fits The Following Bikes: Kawasaki KX450F 2016-2023 Kawasaki KX450X 2021-2023 Kawasaki KX450SR 2022-2023 Cover Description: Pro Circuit's Oil Filter Cover is a must-have item to attain that works look. The cover is CNC-machined from aircraft-grade aluminum, anodized red and hand polished. Features Include: CNC-machined...

Fits The Following Bikes: Yamaha YZ125 2005-2021 Yamaha YZ125X 2022 Pipe Description: The original Pro Circuit Works Pipe offers unparalleled 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...

Fits The Following Bikes: Yamaha YZ125 2002-2021 Silencer Description: The R-304 silencer was developed as a full-race two-stroke silencer. The compact design of the short aluminum canister offers optimum performance gains and is recommended for closed-course racing only. Hex head screws are used to secure...

Fits The Following Bikes: Kawasaki KX250F/450F 2004-2023 Suzuki RM-Z250 2004-2006 Yamaha YZ250F 2001-2023 Yamaha YZ450F 2003-2023 Throttle Tube Description: Pro Circuit throttle tubes are CNC-machined out of aluminum, and are Teflon coated on the inside to reduce friction which gives you a smoother twist of...

Fits The Following Bikes: Yamaha YZ250F 2010-2013 Linkage Arm Description:  Pro Circuit's Linkage Arms are CNC-machined from billet aluminum and are designed to stiffen up the initial linkage curve and improve the geometry of the chassis, making the bike much more stable. This will...

Fits The Following Bikes: Yamaha YZ125 1990 Pipe Description: The Platinum Pipe offers the same performance gains as the popular Works Pipe, but utilizes a platinum plating on the body to protect it from everyday elements. Precision in design and engineering makes even the...

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...