Doesn't, I've got one, and used it on various fixed's, even managed to run my BMX through it, you just have to put it above the chainstay, instead of below.
Works a treat by the way, bout 2 minutes to a sparkly chain. Just use white lightning now though.
Oooh, that is good news, maybe I'll dig mine out again and see if I can make it go on the fixed. Do you need a slack chain to get it to bend around the roller brushes?
Oooh, that is good news, maybe I'll dig mine out again and see if I can make it go on the fixed. Do you need a slack chain to get it to bend around the roller brushes?