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LED bicycle light with gravity-activated brake feature, includes mounting bracket and rubber strap.
A cyclist on a blue bike rides at dusk, showcasing a gravity-activated brake light on the rear.
A bicycle with a red rear light parked on a street lined with purple flowering trees at dusk.
    LED bicycle light with gravity-activated brake feature, includes mounting bracket and rubber strap.
    A cyclist on a blue bike rides at dusk, showcasing a gravity-activated brake light on the rear.
    A bicycle with a red rear light parked on a street lined with purple flowering trees at dusk.
LED bicycle light with gravity-activated brake feature, includes mounting bracket and rubber strap.
A cyclist on a blue bike rides at dusk, showcasing a gravity-activated brake light on the rear.
A bicycle with a red rear light parked on a street lined with purple flowering trees at dusk.
LED bicycle light with gravity-activated brake feature, includes mounting bracket and rubber strap.
A cyclist on a blue bike rides at dusk, showcasing a gravity-activated brake light on the rear.
A bicycle with a red rear light parked on a street lined with purple flowering trees at dusk.
    LED bicycle light with gravity-activated brake feature, includes mounting bracket and rubber strap.
    A cyclist on a blue bike rides at dusk, showcasing a gravity-activated brake light on the rear.
    A bicycle with a red rear light parked on a street lined with purple flowering trees at dusk.
LED bicycle light with gravity-activated brake feature, includes mounting bracket and rubber strap.
A cyclist on a blue bike rides at dusk, showcasing a gravity-activated brake light on the rear.
A bicycle with a red rear light parked on a street lined with purple flowering trees at dusk.

Why Choose This Bike Light?

Auto BrakeBrightens when slowing.
Easy MountSeatpost or rack.
Compact DesignSmall, low profile.
Durable BuildTough plastic body.

About

Specifications & Features

Ride with extra confidence after dark with a practical rear bike light that helps keep you visible on the road — the built-in gravity sensor triggers a brake light when you slow down, so other road users can react quickly.

Perfect for evening commutes and short delivery runs in traffic. Attach to your seatpost or rear rack so following drivers and riders notice you earlier as you slow or stop at junctions and traffic lights. It’s especially useful on busy urban streets and shared paths where sudden slowing can be hard to see — the automatic brightening gives a clear, timely signal behind you.

 

Specifications

  • Wattage (Watts): 0.4W
  • Lumen Output (Lumens): 4lm
  • Voltage: 3.7V
  • Material: Durable plastic
  • IP Rating: IP20 – Indoor Use
  • Dimensions: 43 x 27 x 40 mm
Installation Guidance, Tips & Tricks

Secure Rear Mounting Position: Place the light on the rear of your bicycle where it is clearly visible and fasten it firmly to prevent movement.

 

Keep Beam Straight And Clear: Orient the light straight back with no obstructions from bags or clothing to maximize visibility to road users.

 

Test Gravity Brake Activation: In a safe area, gently slow down and confirm the brake light activates as you decelerate.

 

Use In Dry Conditions Only: Follow the indoor-use rating and keep the light away from rain, splashes, and high humidity during rides and storage.

 

Clean Plastic Surface Gently: Wipe the durable plastic housing with a soft, dry cloth to remove dirt and maintain clear visibility.

Frequently Asked Questions...

How does the brake light function work?

A built-in gravity sensor detects when you slow down and triggers a brake light so other road users can react quickly.

 

What is the light output?

The light outputs 4 lumens.

 

What are the power specifications?

It is rated at 0.4W and operates at 3.7V.

 

Is this light suitable for outdoor use?

It has an IP20 rating for indoor use.

 

What is it made from?

It is made from durable plastic.

Specifications & Features

Ride with extra confidence after dark with a practical rear bike light that helps keep you visible on the road — the built-in gravity sensor triggers a brake light when you slow down, so other road users can react quickly.

Perfect for evening commutes and short delivery runs in traffic. Attach to your seatpost or rear rack so following drivers and riders notice you earlier as you slow or stop at junctions and traffic lights. It’s especially useful on busy urban streets and shared paths where sudden slowing can be hard to see — the automatic brightening gives a clear, timely signal behind you.

 

Specifications

  • Wattage (Watts): 0.4W
  • Lumen Output (Lumens): 4lm
  • Voltage: 3.7V
  • Material: Durable plastic
  • IP Rating: IP20 – Indoor Use
  • Dimensions: 43 x 27 x 40 mm
Future Light contact banner

LED Bicycle Light - Gravity Activated Brake Light

SKU: HL-BK4090
R 399.00
R 399.00
R 529.00
Incl.
Brake Alert
Easy Mount
Compact Design
Secure payment options available at Future Light including Apple Pay, Google Pay, Capitec Pay, Visa, Mastercard and Stitch Express
6 Interest-Free Payments of Approx. R67
Powered by Stitch Final Amount Confirmed at Checkout
Use Case Ideas: How, Where & Why!

Urban commute after dark: Attach to your seatpost for evening city rides on dry roads; gravity-sensed brake light alerts motorists when you slow at intersections.

 

Weekend club rides: Use as a rear marker on group road rides, where frequent slowing and regrouping benefit from the automatic brake alert.

 

Campus cycling between classes: Stay visible on shared paths and parking areas when moving between lectures; the brake light signals to pedestrians and drivers behind you.

 

Delivery runs in traffic: Mount on your seatpost or rear rack for evening drop-offs; the brake signal helps drivers judge your stops in busy streets.

 

Early morning training rides: Ride pre-dawn on quiet suburban roads; the gravity sensor brightens on deceleration, warning following cyclists and cars as you approach corners and stop streets.

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