Cyplore's Kickstarter e-bike kit claims the lightest conversion system for road and gravel

Cyplore has launched a Kickstarter campaign for what it bills as the world's lightest e-bike conversion kit — a system designed specifically for road and gravel bikes with 12×142mm thru-axle dropouts. Early-bird pricing starts at $599 for the hub-only Flex kit, with the complete pre-built carbon wheel version, the One, available from $779. The modest crowdfunding target was surpassed within minutes of the campaign going live.

The kit centers on a compact rear hub motor that mounts directly in place of a standard rear wheel, with no modifications to the frame required. The hub supports Shimano HG, SRAM XD, XDR, and SRAM Road Splined freehubs, covering the drivetrains found on the majority of performance road and gravel bikes. A built-in torque sensor measures pedaling effort and delivers proportional assist across four selectable modes — Smooth, Agile, Auto, and Training — controlled via a magnetic wireless remote that docks to the battery when not in use or mounts to the handlebar while riding. An internal clutch disengages the motor when coasting to preserve a natural, resistance-free feel.BikeRumorRoad.cc

On specs, the hub motor delivers up to 250W of rated power and 23Nm of torque, with assistance limited to 25km/h in the EU and 32km/h in the US. The Flex configuration — hub motor, battery, sensor, and controls only, for riders who want to build their own wheel — comes in at a claimed 1.7kg total. The complete One build, which includes a pre-laced carbon rim sized for 700c clincher or tubeless tyres in 25–32mm widths, weighs 2.5kg. For comparison, the Swytch Max+ conversion kit adds around 3.6kg to a bike.BikeRumorRoad.cc

Power comes from a 111Wh battery styled as an aerodynamic bidon — it mounts to the frame's existing bottle cage bosses via a dedicated carrier, meaning installation requires no drilling or permanent modification. Cyplore claims a range of 50km per charge and a one-hour USB-C charge time, with IP65 water resistance. The system connects to cycling computers over ANT+ and syncs ride data to Strava via a companion app. Cyplore debuted the product at Eurobike 2025 and says it was developed by engineers previously at Samsung, Xiaomi, and Alibaba. The Kickstarter campaign had already cleared £43,000 against a £7,555 target on launch day, with 42 days remaining. The brand has not confirmed a ship date but has indicated units are expected later in 2026. The performance-focused conversion space is getting more crowded — Skarper, Swytch, Add-E, and the Mahle X20 all offer road-compatible assist — but none of the current contenders match Cyplore's claimed 1.7kg system weight.BikeRumorRoad.cc