Back to back ride with (2) 2023 YZ450F's: One with completely stock exhaust and one with a full Akrapovic Evolution (Ti) exhaust system.

The stock exhaust system on the new YZ450F is hard to beat for power and response. Low/Mid/Top the stock exhaust makes quick building smooth and strong power and has heat shields on both sides of the header as it wraps around the cylinder. The noise level is high (though slightly better than the '22 YZ450F) and there is no spark arrester.

The Akrapovic Evolution (Ti) exhaust is about 2 lbs lighter than the stock system. Ridden back to back with both bikes in the stock EFI map the Akrapovic has a smoother RPM build noticeable mostly at the 0~1/4 initial turn of the throttle. The Akrapovic is quieter overall with a more deep and throaty sound. This system did not have the optional spark arrester installed but there is a screen and baffle visible inside the muffler. The Akrapovic uses the stock exhaust heat shield on the left side but has no provisions for the heat shield on the right side.

The Akrapovic Evolution exhaust is lighter, quieter, and smoothes the throttle response and offers a spark arrester along with excellent build quality...all good things that help justify that very high price!

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