LewieBike
Well-Known Member
Is it true the top speed is 62mph?
Top speed is likely governed by a few things on these bikes, just like on the CG engines. Their engines ( if Lifan or DongFan ) are a pushrod, not OHC and they have a longer stroke so they tend to not rev well past 6K.
They do pull well over a broad range of RPM, but the best power you'll get is maybe 18 h.p.
You can easily change the countershaft sprocket to increase the top speed, it does make them a pain to trail ride as they don't have a wide spread of gear ratios, even though they're a 5 speed transmission.
You can get into the exhaust and intake tracts and cut baffles out to increase the intake and exhaust flow. It will require rejetting the Keihin clone carbs they come with. HugeMoth, who owns the 70K mileage Lifan GY200 doesn't ride his much over 55 mph, they have limitations that are best respected if you want to have them last.
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