I found this thread because I was hoping to be able to find out what the diameter of the rear saddle bag guards are??

But glad I landed here, I don't feel so bad now. Just dropped it two days ago. AND....I just finished up a 4 day Police Motor course although that was on Harley Road Kings. I have no problems with my Street Glide slow speed, but the Rocket caught me off guard. Locked to the left, started moving and leaned a little bit more to the left to clear a car with my engine guard and did one of the two no-no's that I just spent days getting in my head. Pulled in the clutch. (BTW...the other one is don't touch the front brake...this is all referring to slow speed maneuvering.) Anyway, as my hand was pulling in the clutch, my head was saying..'don't do that', but it didn't make it to my hand in time. Luckily I have the engine guards and they did their job. But I did buy steel collars for them now. The Rocket has a very different center of gravity and I wasn't ready for it. Live and learn!!!