Pro Circuit Works Expansion Chamber PK02065 — Kawasaki KX65 2002-2015 / Suzuki RM65 2003-2006

Pro Circuit Works Expansion Chamber PK02065 — Kawasaki KX65 2002-2015 / Suzuki RM65 2003-2006

Product Description

Experience the iconic "Works" look and legendary power gains that have made Pro Circuit the industry standard for over four decades. The Pro Circuit Works Pipe is the original, authentic high-performance expansion chamber, featuring an unplated, raw metal finish that gives your bike that true factory-team aesthetic. Designed specifically for riders who refuse to compromise on performance, this pipe delivers a noticeable increase in horsepower and a sharper, more responsive throttle feel across the entire 2-stroke powerband.

Constructed from high-quality AKDQ carbon steel, each pipe is meticulously stamped, hand-welded, and pounded at the seams to ensure maximum internal volume and ideal exhaust scavenging characteristics. This structural integrity is matched by precision-engineered CNC-machined exhaust flanges that provide a perfect, leak-free seal to the cylinder manifold. With reinforced mounting brackets and stingers designed to withstand the brutal vibration of high-rpm racing, the Works Pipe is the ultimate choice for riders aiming for competitive, professional-level performance.

Top Features: Pro Circuit Works Expansion Chamber

• Authentic Works Finish: Features a raw, unplated metal surface that develops a unique patina over time, delivering the unmistakable "factory" look used by top professional race teams.
• AKDQ Carbon Steel Construction: Stamped from premium-grade carbon steel to ensure exact performance dimensions and superior durability under race conditions.
• Reinforced Heavy-Duty Mounts: Equipped with structurally gusseted mounting tabs and stinger sections to prevent stress fractures from aggressive track vibration.
• CNC Exhaust Flange: Features a precision-machined collar that provides a completely sealed fitment against the cylinder manifold, preventing messy exhaust leaks.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2002-2015	Kawasaki	KX65
2003-2006	Suzuki	RM65

Frequently Asked Questions

Q: Does the raw metal finish require special care?
A: Yes, because the Works Pipe has a raw, unplated finish, it is susceptible to surface rust if left untreated. We recommend wiping the pipe down with a light coating of oil, WD-40, or a specialized pipe maintenance spray after every wash to keep it looking fresh and prevent corrosion.

Q: Will this Works pipe bolt directly up to my motorcycle's stock OEM silencer?
A: Yes, this pipe is engineered with factory-spec dimensions, allowing it to seamlessly mount to your stock silencer or any matching Pro Circuit slip-on silencer.

Q: Will I need to re-jet my carburetor after installing this pipe?
A: In most cases, yes. Installing a high-performance expansion chamber changes the engine's exhaust scavenging, which typically requires a change in main jet or pilot jet settings to ensure optimal fuel-air mixture and prevent engine overheating.

Expert Pro-Tip: When installing your fresh expansion chamber, always use brand-new exhaust manifold O-rings and a fresh copper crush gasket at the cylinder face. Reusing worn-out seals allows unburned oil and exhaust gases to spray over the front of your engine casing, creating a messy cleanup and causing a minor pressure drop that can soften your low-end throttle response. For an absolute air-tight seal, apply a thin bead of high-temperature RTV silicone around the pipe flange before slipping it into place.

Recommended Pairings:
o Kawasaki KX65 Performance Parts & Upgrades
o Kawasaki 2-Stroke Performance Parts
o Suzuki 2-Stroke Performance Parts

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

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