peter62 wrote:I have a 50mm slip on can for it now but whats the difference between the nc23 and the nc29 system? apart from the 29 has springs.....

Cheers guys , Peter

Not without a bit of research but they are not a direct fit and it will require some mods, the 23 and 29 engines are very different so I would imagine knowing the Beet system that it will bolt to the engine but you will then struggle to join the other part to the downpipes, then again it may be as simple as enlarging the holes on the flanges.
Try it and let us know.

did it come from a guy in Sheffield?