Considering postage will be some pounds, why not just grab one of these for 6 then buy an inner tube or anything to take you over the £9 required for free postage. I've got a couple and they work fine and quietly. http://www.wiggle.co.uk/lifeline-13t-20t-fixed-gear-track-sprocket-18/
Considering postage will be some pounds, why not just grab one of these for 6 then buy an inner tube or anything to take you over the £9 required for free postage. I've got a couple and they work fine and quietly.
http://www.wiggle.co.uk/lifeline-13t-20t-fixed-gear-track-sprocket-18/