E-Bike Z-Mark Super Bright Stvzo Ai Alert Rear

What Our Gearhead® Experts Are Saying:

"The automatic deceleration detection on the Lezyne E-Bike Z-Mark Super Bright StVZO Ai Alert Rear is the engineering detail that separates this from a standard rear light. It is not just brighter on demand, it is actively reading your ride and responding to it, which on a fast commute route with mixed traffic is a genuinely meaningful safety upgrade over a passive light."

Rear visibility on an e-bike is not just about being seen, it is about communicating clearly and in real time with everyone sharing the road behind you. The Lezyne E-Bike Z-Mark Super Bright StVZO Ai Alert Rear is built around that principle, integrating automatic deceleration detection that triggers a 10 LED, 35 lumen Ai Alert signal the moment the system detects you slowing down. Operating on a 6-12V e-bike input at 1.8W in standard mode and 3.6W in Ai Alert mode, it draws directly from the e-bike system and responds faster than a manual brake light, making it a genuine safety upgrade for high-traffic commuting and group riding.

The lens is a German StVZO Z-reflector optimized design with wide angle optics, producing a broad visibility arc that covers the full range of following traffic angles rather than just the vehicle directly behind. Standard running output sits at 11 lumens across two high-output LEDs, road-legal and consistently visible without being distracting, while the Ai Alert burst triples that output instantly on deceleration.

At 48g and measuring 32mm x 113.5mm x 15mm, the Z-Mark sits flat and low on the rack without adding meaningful weight or disrupting the profile of the build. The composite matrix rack mounting system accommodates 50mm and 80mm mount spacing, covering the majority of rack configurations without adapters, and stainless allen key hardware ensures the mount stays secure over time and through variable conditions. IPX7 waterproofing completes the package.

For e-bike commuters and urban riders who want rear lighting that actively contributes to ride safety rather than simply satisfying a visibility requirement, the Lezyne E-Bike Z-Mark Super Bright StVZO Ai Alert Rear is the rear light to spec.