well, i was riding today. Really a new rider in the dirt. got rid of street and got into dirt. still not all the way comfortable with the 426 but decided to hit some burms today after only been trail riding. well since i don't have a clue to what i am doing i dumped the bike a couple times, no big deal just learning and didn't hurt anything. well the last time i dumped it i broke off my brake lever and put a dent in the bend of the primary exhaust. the dent is half way through the pipe about 2" long from a root, it also has a slight kink where the pipe goes under the radiator. can i hurt my motor with the restricted air flow? where can i get the cheapest part of the exhaust to fix the problem?