I am the clydesdale of our group 6'-1'' 270 lbs. I have much better performance than this would lead one to believe. Dusted many more slender riders that underestimated the engine.
Have a lota boing on the FS bikes that I have tried so I ride a hardtail. Tought me to be a finesse rider and still keep up with the less gravity challenged of the group. With all that weight I gotta go easy on the rims. ;-)
I think I'm in a lot better shape than the specs would indicate. Love handles and all!
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JAPH