not sure officer, it might have been on there when i brought the bike

, or did i get it made?? can't remember now

but i tell ya one thing, it's a hell of a lot bigger than the one in the shed that came with it. bit smaller than the standard air brake fitted by the dealer though, i find it makes the front wheel lighter and then the bloody bike wheelies every where with it fitted so i have a comprimise fitted at the moment.
dave