Lezyne Radar React System LED bike light set on white; React Drive front and Radar Drive rear shown with strap mounts.
Lezyne React Drive LED front bike light product image; compact body with side cutouts, USB-C port and secure handlebar mount.
Lezyne Radar Drive LED rear bike light front view; tall lens stack, co-molded body, seatpost strap mount and USB-C.
Lezyne Seatpost Adapter Kit with D-Shape and Aero adapters plus mounting straps for Strip Drive and Radar Drive LED rear bike lights.
Lezyne Radar Drive LED rear bike light paired to Radar Ally app; phone screen shows live vehicle alerts and mode controls.
Lezyne Radar React System lifestyle scene; cyclist at road bike at dusk adjusting lights before ride, evening sky in background.
Lezyne Radar React System on gravel bike side view; front and rear lights mounted, low profile fit on seatpost and handlebar.
Lezyne Radar React System rear view on road bike; Radar Drive glows and rear indicator LEDs on React Drive are illuminated.
Lezyne React Drive LED front bike light on road bike side view; mounted on sleek handlebar.
Lezyne Radar Drive LED rear bike light on road bike seatpost; lamp shining to rear, clear beam and reflective details visible.
New

RADAR REACT SYSTEM

LED FRONT & REAR BIKE LIGHT SET WITH RADAR ALERTS

Sale price$279.99
SKU: 1-LED-43P-V117
  • Advanced LED front and rear bike light system with Radar technology
  • Includes Radar Drive rear and React Drive front light
  • Custom programmed wireless system
  • Lights wirelessly pair together
  • Built-in vehicle detection alerts
  • Use with Radar Ally phone app
  • Manually control both lights through app
  • Connects to compatible GPS bike computers
  • Premium LED technology, optics and lenses
  • React Drive features built in visual and audio alerts
  • IPX7 Waterproof with USB-C charging ports
  • Front: Max 1200 lumens / 70 hours runtime
  • Rear: Max 300 lumens / 20 hours runtime
Lezyne upgraded radar-based vehicle detection for cyclists with the Lezyne Radar React System—a solution designed to enhance both bicycle safety and visibility on the road.
This advanced system integrates radar technology into our industry-leading LED front and rear bike light set. Riders can now receive audio and visual alerts through multiple devices: 

  • Lezyne Radar Ally smartphone app,
  • Compatible GPS bike computers, or
  • Directly via the React Drive front bike light. 
The Radar Drive pairs with the React Drive to complete the Radar React System. Rear-facing LED indicators and audible alerts are custom-built into the React Drive, providing real-time notifications of rear-approaching vehicles—no smartphone or third-party device required.
This all-in-one system delivers TOTAL VISIBILITY: radar-based vehicle detection, disruptive daytime flash patterns, and up to 1200 lumens up front for effective night riding.
All of this is backed by our exceptional R&D, in-house manufacturing, and premium features like IPX7 waterproofing and USB-C charging.
Welcome to the future of bicycle visibility: activate your Cycling Sixth Sense.
Note: A smartphone is required for the initial pairing of the system. More information can be found in the Radar React Drive Setup Guide.

 

RADAR DRIVE REAR LIGHT MODES:
REACT DRIVE FRONT LIGHT MODES:
RADAR DRIVE REAR SPECS:
Max Lumens:
300
Max Runtime:
20 hours
Weight:
122g
Dimensions:
78mm, 48.9mm, 47.6mm
REACT DRIVE FRONT SPECS:
Max Lumens:
1200
Max Runtime:
70 hours
Weight:
156g
Dimensions:
89.8mm, 42mm, 35.5mm

WORLDWIDE
CONTACT INFO

WORLDWIDE
PRO SHOPS

UNITED STATES
DEALERS

COMPLIANCE