I put a pair of the coil over rear shocks from the CVO Street Glide on my 09 SERG without any issues at all. They fit perfectly and were a huge improvement over the air shocks that came standard in 09. They were so much better that up until then I didn't know how bad the front suspension was. It was only a matter of weeks before I had to put the Progressive Monotube's on the front end. The difference in handling both fore and aft is night and day.