Hi all I'm gearing up to buy a Monster 797 but the option to swap out the standard exhaust for a Termignoni is giving me a headache so looking for some opinions. The two Termi options are the Sport Line Racing Silencer and the Evo Line Type-approved Silencer. They're both just over £1k and the Sport is actually the cheaper of the two as it doesn't need a separate cover. What I'm after is a better, more rorty sound than the standard exhaust, but not too loud. I'm not that fussed about an increase in performance (for info the Sport gives between 2% and 5% extra power and the same for torque - I can't find any figures for the Evo). I can't find any sound level figures for either exhausts. So a few questions that I have are: How illegal is the non-road legal Sport exhaust, is it only likely to be a problem if the police are looking for an excuse to pull you over anyway? Will it cause any problems with the MOT, insurance, etc? I don't plan on taking my bike on a track. Does the Evo sound similar to the Sport? There are lots of YouTube vids of people praising the Sport but not much about the Evo and you can't really tell from the vids what they sound like (not on my tablet anyway). Does fitting the dB Killer to the Sport make much of a difference to the loudness? I prefer the look of the Sport and from what people say it sounds good - it just might be a bit too loud for my liking, I don't want to go around annoying folk and making dogs freak out. The Evo seems the more sensible choice but I would be disappointed if I spent £1,000 on it and the sound wasn't much different to the standard exhaust, I'm also not as keen on its looks (I think I might actually prefer the look of the standard exhaust!). Any comments would be much appreciated Thanks for reading!