BMC Alpenchallenge AC01 City Kit Lights

The BMC Alpenchallenge AC01 City Kit Lights were developed in partnership with Sparse specifically for the AC01 — which means the fit, finish, and proportions are designed to look like they belong on the bike, not just bolted to it. Die-cast zinc housings give both units a solid, refined feel that matches the AC01's aesthetic in Black or Silver. With IP4 water resistance and USB-rechargeable lithium-polymer batteries, they're built for the kind of everyday riding where reliability isn't optional.

The front light runs a 3-watt white LED at 220 lumens — enough to be seen and to see by — and mounts to 1" to 1-1/8" bar stems or seat posts. The rear light is a 2-watt red LED at 100 lumens, with clamp compatibility for 26.0mm and 31.9mm seat posts. Both lights offer steady and blinking modes, with four hours of runtime in steady mode and eight hours in blinking — a practical spread for commuting and urban riding.

BMC Alpenchallenge AC01 City Kit Lights Specs at a Glance

• Front light: 3-watt white LED, 220 lumens
• Rear light: 2-watt red LED, 100 lumens
• Runtime: 4 hours steady / 8 hours blinking (both lights)
• Water resistance: IP4
• Housing: Die-cast zinc — available in Black or Silver
• Battery: Lithium-polymer, USB rechargeable
• Front mount: 1" to 1-1/8" bar stems or seat posts
• Rear mount: 26.0mm and 31.9mm seat posts