4 years ago I had twin Akra's on my Suzuki Vstrom 1000 (beautiful sound BTW) I do remember, that those mufflers were >true< slip on's meaning there was some very slight play where the Akra pipes fit over the bikes exhaust pipe. ( right where the springs hold the pipes together) but I don't recall if they leaked exhaust air...... would love to hear the slip on, on a connie!