Use a bolt on cog 135mm single speed disc hub: http://www.winstanleysbikes.co.uk/product/30777/DMR_SingleSpeed_Rear_Hub_DMR_HUB_SS_S_36K?gclid=CLnKgbC_1roCFfMctAodJF0AVw
Or if you want to be able to easily change your SS cog or even pop on some gears, then a hope pro 2 trials.
@coventry_eagle started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Use a bolt on cog 135mm single speed disc hub: http://www.winstanleysbikes.co.uk/product/30777/DMR_SingleSpeed_Rear_Hub_DMR_HUB_SS_S_36K?gclid=CLnKgbC_1roCFfMctAodJF0AVw
Or if you want to be able to easily change your SS cog or even pop on some gears, then a hope pro 2 trials.