07-03-15, 04:43 PM
There are a couple of us on here with Blue Flame exhausts (we have the oval, twin spout versions on 3 of our bikes) and everyone seems to have good things to say about them - road legal, good sound, great quality (the one on my Aprillia RSV 1000 has been on for 11 yrs) and available from £150 upwards new.