Arrow Pro-Race Slip-On Exhaust Kawasaki Ninja 500 / Z500 2024 At the turn of the 21st century, MotoGP saw a revolution in exhaust design that strayed away from old school round canister shapes and instead incorporated the muffler into the mid-pipe itself. This design not only reduces mass but also overall weight. Now this same design is available to you in the form of the Arrow Pro-Race Exhaust. From its cone-shaped sleeve, angled round end cap, integrated exhaust hanger and TIG welding all around, this exhaust screams performance without compromise. Available in either titanium or NiChrome. NiChrome alloy is a blend of stainless steel and nickle alloy that is highly heat and corrosion-resistant. Because of the internal volume and shape of the Arrow Pro-Race, Arrow was not able to produce it for every single motorcycle. Arrow found through research that most bikes exceeded acceptable noise levels when fitted with the Pro-Race Exhaust. If your motorcycle is among the chosen few, consider yourself lucky. Features: Increased horsepower and torque Significant weight savings over stock muffler Integrated TIG welded exhaust hanger