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...

Fits The Following Bikes: Yamaha TT-R110E 2008-2023 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: Kawasaki KX125 2003-2007 Silencer Description: The Ti-2 Shorty Carbon Kevlar/Titanium Silencer is the latest piece of racing technology we offer and is guaranteed to be a favorite for most two-stroke riders. The Ti-2 is similar to the popular R-304 Silencer...

Fits The Following Bikes: Kawasaki KX450F 2021-2023 Kawasaki KX450X 2021-2023 Cover Description: Pro Circuit Clutch Covers are CNC-machined from T-6 billet aircraft-grade aluminum to improve durability and heat dissipation. Cooler operating temperatures means improved performance. Here's a chance to add a product to your...

Fits The Following Bikes: Kawasaki KLX110/L 2010-2023 Ignition Cover Description: Pro Circuit's KLX110/L Billet Ignition Cover is a direct replacement for the OEM cover and will definitely offer a factory look. The cover is CNC-machined from aircraft quality aluminum for strength and durability then...

Fits The Following Bikes: Honda CR250R 1991 Silencer Description: 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...

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 easily...

Fits The Following Bikes: Suzuki RM250 2004-2008 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: Honda CRF250R/X 2018-2023 Honda CRF450R 2019-2023 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 the throttle.

Fits The Following Bikes: Honda CR125R 1989-2007 Honda CR250R 1989-2007 Honda CR500R 1989-2001 KTM 125 SX 1997-2005 KTM 200 EXC 1997-2005 KTM 250 SX 1997-2005 KTM 300 EXC 1997-2005 KTM 380 EXC 1997-2005 Throttle Tube Description: Pro Circuit throttle tubes are CNC-machined out of...

Fits The Following Bikes: Kawasaki KX250F 2013-2018 Kawasaki KX450F 2013-2018 Yamaha YZ125 2008-2013 Yamaha YZ250 2008-2013 Yamaha YZ250F 2007-2013 Yamaha YZ450F 2008-2013 Forged Brake Lever Description: Pro Circuit Brake Levers are made by Sunline and forged from 6061-T6 aluminum for strength and durability. This...