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Discussion Starter · #1 ·
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Kick ass! I love it now with Kawasaki and Ducati regularly smoking the Harley dinosaurs. Yamaha joining the fray will put Harley even further back.
 

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Discussion Starter · #7 ·

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Aren't they 750cc?
Yes, both twins classes (expert and pro) are 750. Kawasaki runs their EX650 bored out to 750. Again to match the all-mighty Harley XR750. Yamaha do the same as Kaw. The Ducati's are 750 twins (Monsters) sleeved down to 750.

They let singles run on short tracks and TT's, so those are 450 motocross bikes.
 

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Is the Harley XR750 still a push rod with 2 valves per cylinder? I thought maybe for that they'd allow it more cc than over head cam with 4 valves designs.
 
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