2021 RMZ 250 exhaust

Don't think there is a magic pipe for the latest RMZ. Have you tried the most aggressive map that comes with the tuner? It's like the white coupler but with more timing. I would try that first. I have the RS-12 pipe, looks cool but in my opinion bigger gains can be found elsewhere, not with a pipe.

I’d try the akrapovic Evo exhaust if it was me.

Saves 2-3lbs and adds power and smooths the delivery out. You could build a light weight bike from that platform. The 250 is a great platform.

Akrapovic, titanium axles, Pirelli tires, titanium rim locks small things like that and you’ll be close to 10lbs lost!

I have a Yosh system but put it one when the bike was new so I honestly didn't compare to stock.

Change torque of motor mounts before spending $$

I had a 2019 and ran stock pipe then a yosh. Made zero difference I’d say power wise. Definitely looked nicer and sounded a little deeper. That’s about it.