cold air = free horsepower
coldest I have ever been out was on my SV650, was -25° for about a 100 mile ride, I learned very quickly to not pump fuel with your gloves off, heated glove, while they will keep your hands warm, will not warm them back up once they have got that cold, luckily I got gas at the end of the ride and it was only 3 miles back home
I also learned that duct tape is your friend, seal the overlaps between jacket and pants and boots and pantleg by taping them up, a draft of -25 temp @60mph feels like yer getting stuck with a needle