Lumos Firefly Rear Turn Signal Mount Lumos Firefly Rear Turn Signal Mount Lumos Firefly Rear Turn Signal Mount Lumos Firefly Rear Turn Signal Mount
Lumos Firefly Rear Turn Signal Mount Lumos Firefly Rear Turn Signal Mount Lumos Firefly Rear Turn Signal Mount Lumos Firefly Rear Turn Signal Mount

Lumos Firefly Rear Turn Signal Mount

£24.95 GBP

Lumos Firefly Rear Turn Signal Mount Fit Guide

Measuring your head size
Find a measuring tool Use a soft tape, rope or even your charging cable. Place it against a ruler to measure.
Measure your head Wrap it around your head, position it mid-forehead and above the eyebrows and ears.
Find your helmet size Identify if it’s a good fit. Lumos Firefly Rear Turn Signal Mount fits most head shapes with the adjustable dial fit system.

Determining Your Head Size

Sizing Small Medium-Large Extra Large
Inches 20in. - 21.7in. 21.3in. - 24.0in. 24in. - 25.6in.
Centimetres 51cm - 55cm 54cm - 61cm 61cm - 65cm
Weight (MIPS) 370g 409g 450g
Weight (Standard) - 370g -
Upgrade your bike's safety game with our all-new Turn Signal Mount, meticulously designed to meet industry-leading road safety standards.

Crafted from a durable all-metal body, this mount allows you to attach two Firefly lights 24cm (9.45") apart under your seatpost—making your intentions on the road clear as day.

The mount's strategic under-seatpost design not only offers a sleek, low-profile look but also gives you the flexibility to adjust the Firefly lights to the desired angle.

What's more, it's saddlebag-friendly, so you don't have to compromise on utility.

Product Specifications
  • Size
    • Length: 7.87" (200mm)
    • Width: 3.15" (80mm)
  • Weight
    • 1.06 oz. (145g)
  • Material
    • Aluminum alloy
  • Mounting Compatibility
    • Fits saddle rails with diameters between 0.28" - 0.39" (7mm - 10mm).
    • Can be attached on saddle rails spaced 1.77" - 2.95" (45mm - 75mm) from each other.
    • Requires a 0.43" x 0.79" (11mm x 20mm) gap below the saddle.
  • Safety Standard
    • Compliant with Motor Vehicle Safety Standard No.108 by the NHTSA.
What’s in the Box

This package includes:

  • 1 x Turn Signal Mount with seatpost bracket
  • 1 x Allen key
  • 4 x Small screws
  • 2 x Thumbscrews

*Universal Mounts to hold your Lumos Firefly are not included in the box.

Elevate Road Safety with Intelligent Turn Signalling

Unmistakable Signalling

Road safety-compliant distance of 24cm to mimic standard vehicle signals, ensuring clear communication and safer lane changes on the road.

Durable and Versatile Design

Made from a sturdy all-metal body that effortlessly fits under your seatpost for a more streamlined look. The mount allows for angle adjustments to your Firefly lights, ensuring optimal visibility. Plus, its design accommodates saddlebags, so you can carry your essentials without a hitch.

Seamless Angle Adjustments

Easily rotate your Firefly lights to the perfect angle, guaranteeing you're seen—and safe—from all directions.

Customer Reviews

Based on 32 reviews
Peter Wilding
Disappointed Mount not included

I would have scored more if the required parts of the universal mount was included. I imagine other customers use like I do for other activities so as a result having had to rob the plastic part you need to buy the universal mount that is sold separately.

John Steinberg
best lights for urban commuting

I have a set of 4 (2 back, 2 front) on a folding electric bike that I commute with on pot-hole-filled roads. The middle part of the commute is a train ride where I need to fold it. The lights and back turn signal are really wonderful. The setup was seamless. Monitoring which light needs charging using the phone just takes a second. The mount does not get in the way of folding up the bike, and it does not have much extra width, so that I can easily navigate the train.

Edit : updating my previous review !!! It fits perfectly !!!

I want to apologize for my first review. I first thaught it wouldn’t fit my saddle.

But I finally disassembled completly my saddle and it fits now perfectly on my 2x1000w Lankeleisi MG 740 Plus Speedelec Mountain Bike.

Please feel free to erase my first review.

Good job guys !

Laurent Soufflet
Waste of money

Doesn’t fit my saddle… Useless mount for me. Nearly 40€ thrown at the bin.

Very disappointed…

Gary Meeks

All I can say, the lights are great and mounts. Just waiting on seat mounting bracket.

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