A friend's brother had these sitting in his basement. He is not a boater, but thought they were cool and might be of value. I am currently redoing a '89 Python 24' Sport Cuddy and grabbed them to see if I could make them work. I am not so sure...
The overall length is 29". The body of the muffler is 17". The tip is 9". The inlet diameter is 3" and the tip diameter is 3.5". They have a silent choice flapper built into them.
I don't know if they are truly Kiekhaefer pieces or if somone just put stickers on them.
I am running a stock GenVI 502 and am thinking they might not be my best option. Opinions requested!! If I don't use them I'd like to at least let my buddy's brother know what he's got and what they are worth.