CatEye Sync Kinetic 40/50 LM Rear Light

The CatEye Sync Kinetic Rear Light is a smart, high-visibility rear solution that reacts to your riding in real time. With a permanent kinetic mode that triggers a 50-lumen burst under braking or deceleration, it enhances visibility precisely when it’s needed most. Designed with CatEye’s SYNC system in mind, it allows seamless multi-light synchronisation, system monitoring via app, and group ride-friendly modes – all in a compact, USB-rechargeable unit.

CatEye SYNC is an easier, quicker and safer lighting solution for all types of cyclists – from commuters to enthusiast riders. This smart system allows multiple lights to be wirelessly controlled and monitored through a single touch, offering all-round, all-angle visibility, day or night.

Features

• Smart kinetic brake light functionality across all modes
• 5-LED system with large 30 Lm main LED
• Permanent 50 Lm kinetic burst during deceleration
• Customisable light modes via CatEye SYNC app
• Superior side-on visibility for junction safety
• One-touch system control via SYNC Core
• USB rechargeable
• Lightweight and compact with band mount
• Group Ride mode for low-pulse visibility without distraction

NOW WITH A 5 YEAR WARRANTY

ROAD SAFETY DATA
Based on research from Japan’s Institute for Traffic Accident Research and Data Analysis:
– 78% of fatal cycling accidents occur during daylight hours
– Collisions at crossings are the most frequent, followed by rear-end and turning incidents
– 87% of human-factor accidents result from delayed cyclist recognition

SYNC SYSTEM ADVANTAGES

Synchronised:
– One switch powers all synced lights
– Rear light flash patterns synchronise for improved road presence
– No remote needed

Customisable:
– Configure up to 7 lights via the CatEye SYNC app
– Exclude unused modes from the front light
– Enable rear Kinetic mode synchronisation

Communicative:
– Front light communicates SYNC system status via coloured indicators
– App shows battery levels for all paired lights
– “Find Me” mode helps identify which light needs charging

SPECIFICATIONS

LEDs: 5 total (1 x 30 Lm main, 4 x 5 Lm)
Kinetic mode: 50 Lm burst active in all modes
Modes:
– High: 40 Lm, 1.5 hrs
– Low: 4 Lm, 15 hrs
– Flashing: 30 Lm, 50 hrs
– Group Ride: 40 Lm, 15 hrs
– Rapid: 50 Lm, 20 hrs
– Daytime HyperFlash: 50 / 50 Lm, 30 hrs
Charging time: 2.5 hrs via USB 2.0
Weight: 43g (including band mount)