Any one else have a street bob 09 model having trouble with the two back cyclinder nutts backing off your exhaust?

 

I lost them after I got my bike back from the wreck. Torque them, heat up the motor re-torque them and then again one more time after it cools. Following that sequence I've never had a problem with them coming lose. Also make sure they are tightening and not just hung up on the exhaust flange and clicking your torque wrench. If you need new nuts they are 1/4 20.

 

Put some anti seize on the threads and torque them down. The anti seize wont stop them from loosening, but it will save you the headache of a broken stud further down the road.