I just now installed the turn-outs. It helps to smooth the inside of the silencer's coupling point with a sanding drum. 1.25" works fine, just take the time to to ensure you sand the inside of the coupling point smooth. Once I got them on, it was too late in my neighborhood to open them up, so I started the bike in the garage with the doors closed (MAJOR reverberation/echo).
OH MY GOSH!! This is the sound that I have been looking for since I bought my cherished Speedy. It's RAW, It's POWERFUL, it's PURE Freakin' TESTOSTERONE!
I can't wait until I can take it to work tomorrow. There are so many Hardlys, and Hardly-clones in the parking lot, and none of them sound this PRIME-EVIL. They all sound like a diapered, flatulant, infant compared to the raw sound of my Speedy.
Only time will tell if I can take the new raw, powerful, sound of my Speedy every day. It's loud, to be sure, but it's also powerful in a gut-wrenching, visceral type of way. Seriously, these pipes ROCK.