Not got my r125 yet but av also been looking into exhaust but from what i have read, seen and heard on a r125 i wouldn't recommend the scorpion exhaust, but that is only my personnal opinion and each to there own i guess, would be worth your while looking into the other exhaust you can get and a think you may change your mind also
that might not have been any help or what u wanted to hear or know but
ian