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Please watch from the sidelines for a while and see how it's done = STFU Noob
Compare the muffler position relative to the swing arm and axle on the Honda and Yamaha.
Yes, that yamaha is loud and sounds like shit, but plenty of aftermarket exhausts make it quiet and it romps that dual exhaust Honda on track and on a dyno.
*edit* I just noticed this is an ancient thread that was revived... Some things should stay dead. *edit*
Secondly, although in 2019 the YZF250F had a little more power than the CRF250R, the 450 class was the other way around, so what has that got to do with dual mufflers?
Thirdly, further to the above, the dual mufflers have zero to do with total peak power output
2) and 3) I agree with you that dual vs single exhaust has little to do with power output. In fact, that was my point in showing the Yamaha as a comparison.
More... The Yamaha appears to have equal (perhaps better?) mass centralization with a single exhaust than the Honda dual system.
Pit Row
Post a reply to: Dual Mufflers on a 2 stroke