SL-FX+ Underglow
SL-FX+ Underglow
SL-FX+ Underglow
SL-FX+ Underglow
SL-FX+ Underglow
SL-FX+ Underglow
SL-FX+ Underglow
SL-FX+ Underglow

SL-FX+ Underglow

Sale price$59.99
The SL-FX+ is the simplest and most colorful way to light up your night rides with 8 vivid colors and 3 awesome color-changing modes tucked inside a compact and durable shell. Connect to the ShredLights app to unleash over 10,000 combinations of colors and light modes - plus, you can control multiple lights with the push of a single button! 
Pack Size:Single Pack
  • Wireless Control: Pair to the ShredLights app to pick from 10,000+ color combinations
  • 8 Default Colors: Red, Orange, Yellow, Green, Cyan, Blue, Purple, White
  • 3 Color Changing Modes: Fade, Pulse, Circle
  • Auto on/off: Turn lights on with motion and off when motion stops for 2 minutes
  • Group Sync: Synchronize light colors/modes with up to 12 lights
  • Rechargeable Battery: Charge in 2 hours via USB-C
  • Battery Life: 3 hours with adjustable brightness to increase run times to 8+ hours
  • S-LOCK Mounting: Compatible with any S-LOCK mounts
  • Compact Size: 3" x 1" x 1/2" | 45 grams (each)

Download Full User Manual

Easy to Use

Install in Minutes

Place the included sticky mount on any flat surface and clip in the light using S-LOCK mounting.

Wireless Control

Customize Colors & Sync Light Groups

Pair to the app to customize colors and light modes. Group multiple lights together to sync light modes and control groups with a single button.

Auto on/off

Hands-Free Control

Enable auto on/off from the app to make your lights tun on with motion and turn off after 2 minutes of no motion.

S-LOCK Mounting


Transfer the same light between any S-LOCK mounts in seconds to light up all your rides.


Yes! You can download it here.

Yes. The SL-FX+ comes with 8 default color modes and 3 color changing modes. You can also pair multiple lights together without the app by holding the top button for 5 seconds to enable pairing mode.

Yes. The new SL-FX+ is fully compatible with the beta version from 2022.

Customer Reviews

Based on 159 reviews


Oleg V. (Chicago, United States)
Great lights but buggy app

I love the lights but the app is pretty buggy, one light keeps breaking in a group and doesn't want to turn on with the rest.

You-Keun S. (Riverside, United States)

Amazing lights! Super quick and easy to set up. Love the different color combos

Joe N. (Whittier, United States)
I love these lights

I ordered my lights two weeks ago they came right away and they were cool and easy to set up and I love these things oh and they’re freaking bright

Miguel G. (Eagle Pass, United States)
Great product!

Well built and bright!


they are ok, app crashes 50% of the time they work.

Patrizio A. (Rocky Hill, United States)
Love these lights!!

I have more SL-Flex’s than I need but these lights are so cool I find ways to put more on all my decks!!

Kevin M. (Indianapolis, United States)

There bright and look great . The app is easy to use and the kit takes just a frw minutes to install . Much easier then hard wiring a new light


Have to send it back but I am excited for the new one

Free shipping

Free US Shipping $100+