Order by 5th Dec to guarantee your bike for Christmas
New To Sigma Sports?
£10 off £100* - code SIGNUP10
£25 off £250* - code SIGNUP25

This item is no longer available to buy. View similar products.


Cateye Sync Kinetic Rear Light

★★★★★ ★★★★★
MSP £44.00 Save 43%

We're sorry, but unfortunately, we're unable to ship this item to your country

Product ID: 924357

Be seen and stay safe on the road with the Cateye Sync Kinetic 40/50 LM Rear Light.

With a bright 50 lumen output, this handy tail light has a range of modes to suit your riding. Kinetic mode automatically illuminates the light when it senses deceleration, much like a brake light, while Group Ride mode softens the output, making it eye-friendly for the rider behind. On its most economical setting, you can get up to 50 hours of flashing light, and the unit charges up in just 2.5 hours using the included micro-USB cable.

Cateye Sync Kinetic Rear Light

With the Cateye Sync Kinetic Rear Light, you get a seriously technical piece of kit with a host of advanced features that make this a superb option.

With a maximum output of 50 lumens and an excellent 180° of visibility, you'll be seen on the road day or night. The kinetic mode works like a brake light, turning the light on at 50 lumens when it detects sharp deceleration, while Group Ride mode keeps the light level at a more eye-friendly intensity for the comfort and safety of the rider behind.

Sync mode opens this rear light to a world of connectivity and customisation. You can control the light via the Sync app on a compatible smart device, connecting it to a chain of up to seven other lights (sold separately). Using the app, you can determine exactly how much power remains in the lithium polymer battery too.

Charge up this great unit in just 2.5 hours using the included micro-USB cable, making it the perfect commuter light that you can recharge at your desk.


  • Built-in acceleration sensor for Kinetic mode (automatically turns on with 50-lumen brightness when bike deceleration is detected)
  • Excellent daytime visibility in Daytime HyperFlash mode
  • Group Ride mode eye-friendly to team riders behind
  • Superior side visibility
  • OptiCube™ lens technology
  • Battery Auto Save (The mode automatically changes to flashing when the battery power gets low)
  • Activation of the Kinetic mode depends on the degree of deceleration, the light may not react or the reaction may be delayed


  • Sync Kinetic Rear Light
  • Rubber band mount (fits φ 26.0-32.0mm seatpost)
  • Micro-USB cable


  • High (40 lumens) 1.5 hrs
  • Low (5 lumens) 15 hrs
  • Flashing (30 lumens) 50 hrs
  • Rapid (50 lumens) 20 hrs
  • Group Ride (40 lumens) 15 hrs
  • Daytime HyperFlash (50 lumens) 30 hrs

When Kinetic mode is enabled 60 times per hour

  • High (40 lumens) 1.4 hrs
  • Low (5 lumens) 6 hrs
  • Flashing (30 lumens) 7 hrs
  • Rapid (50 lumens) 6 hrs
  • Group Ride (40 lumens) 6 hrs
  • Daytime HyperFlash (50 lumens) 7 hrs


  • Light source: Red LED X 5
  • Maximum lumens: 50
  • Modes: Six - High, Low, Flashing, Rapid, Group ride, Daytime HyperFlash (with Mode Memory function)
  • Run time: High (40 lumens) - 1.5 hours, Low (5 lumens) - 15 hours, Flashing (30 lumens) - 50 hours, Rapid (50 lumens) - 20 hours, Group Ride (40 lumens) - 15 hours, Daytime HyperFlash (50 lumens) - 30 hours
  • Battery: Lithium Polymer, micro-USB rechargeable
  • Recharge time: 2.5 hours
  • Dimensions: 74.5 x 26 x 28mm
  • Manufacturer claimed weight: 43 grams (with battery)

Close menu