Hmm,
The Termi system uses the standard rear header and a new front pipe without the inbuilt cat.Its of a bigger diametre to make up for its length.
I saw a big bore system on a 999 at the weekend and its more like a 2 into 1.The rear pipe bends down before curling back up to meet the front.It looked awesome and needed spacers on the footrests to fit in the space between the rests and the swingarm.
