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thats pretty good increases, but wouldnt a 790 with all those mods make more? its weird how de tuned that 865 is. are the cams the only real main difference? i wonder if the pistons are any different



i wish i new, but everything i've read suggests the displacment, cam and jetting are the only differences. It seems that the extra cc's and the cam were done in order to boost torque without having to bring the motor out of it's mildly tuned state to achieve it. But from all descriptions they 2 engines feels so close people who've ridden both say they couldn't tell a diff. I sure would love to hear right from the mouths of those triumph engineers who were responsible for the change just why they did it and in what way it improved the speedy if any.

Anyway, it's when modding that the 790's seem to have the advantage. But on the other hand the 865 may make more torque with mods than the 790, who knows. All i do know for sure is that mine improved a heck of a lot with the pipes and snorkel removal. I'd have to ride a modded 790 before i'd believe 100% those mods would make a bigger difference than they did for me.