This is current project... customer wanted throttles both sides [left ] electric... I think I prefer thumb throttle on dual set-up but this will be o.k. I only use "geared drive" hubs as when you release they back out / disengage... and there is no drag... I also only use ebikekit.com headquartered in PA. They back their stuff up - good quality but great waterproof units and higher quality. I am a dealer if you are looking for a discount.