I've done a season now with one from RockBros, cost about £50...it feels pretty flimsy in my hands but actual shifting hasn't felt any better/worse and with no weird carbon effect nor graphics, it looks ok.
There’s a review of one on a YouTube channel called TraceVelo that seemed promising.
@snoops started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I've done a season now with one from RockBros, cost about £50...it feels pretty flimsy in my hands but actual shifting hasn't felt any better/worse and with no weird carbon effect nor graphics, it looks ok.