Installing a Garmin Varia UT800 front light to a 2025 Trek Madone

[RaptyrOne]

Hello,

Seems not as straight forward as I thought... I have a Trek Madone 2025 SLR7 Gen 8 with a single integrated aero bar & stem. It came with a factory fitted / integrated Garmin computer mount. I use my Garmin Edge 840 in this. It also has a fitting on the mount underside for installing a light. I bought a Garmin Varia 800 UT front light which comes with some fittings, but they are unusable. Some images included to highlight.

If I attach the light directly to the fitting on the bike, it cannot be removed without an allen key for charging etc plus, even when I tighten the screw, it is not tight enough and rocks/swivels on the mount hinge. I don't want to tighten too tightly as I may break the connection on the bike mount.

Seems I need an adapter like the one I found on eBay (image included). Seems it is not available locally though. This would allow me to use the included Garmin quick release mount that came with the light as shown in the one drawing attached.

I am not going to use the included bolt-on Garmin mount that came with the light as for one, it is ugly as sin on a clean aero handlebar and 2, it won't fit anything but a round handlebar. Seems to me that although Garmin launched this light maybe 10 years back and still sell it today as a best-in-class bike light, they have failed to keep it updated with modern trends in bike design.

Anyone know of an option to fit this light to a modern aero bike out front computer mount, or am I sending it back to its maker for a refund, which I don't really want to do? 

 

[splat]

I am not familiar with the Garmin light, but also have a Trek with Blendr mounts.
If you dont come right with Garmin adapters, the Trek light would work nicely with the gopro mount (upside down) with this:

 

https://www.trekbikes.com/za/en_ZA/equipment/bike-accessories/bike-lights/bike-light-accessories/bike-light-brackets-and-mounts/bontrager-blendr-universal-light-mount/p/26815/?colorCode=black

 

https://www.trekbikes.com/za/en_ZA/equipment/bike-accessories/bike-lights/bike-front-lights/trek-ion-pro-rt-front-bike-light/p/41444/?colorCode=black

 

[michaelbiker]

You might be able to use this. You’ll need to take it apart and attach the quarter turn male end into the base of your mount. I did this on my mount (it’s hard to tell if your mount has threads in the pics) to fit a raveman light to my k-edge mount. It seems very sturdy once attached  

https://share.temu.com/4I615Ih6EkB

[ChrisF]

21 hours ago, splat said:

I am not familiar with the Garmin light, but also have a Trek with Blendr mounts.
If you dont come right with Garmin adapters, the Trek light would work nicely with the gopro mount (upside down) with this:

 

https://www.trekbikes.com/za/en_ZA/equipment/bike-accessories/bike-lights/bike-light-accessories/bike-light-brackets-and-mounts/bontrager-blendr-universal-light-mount/p/26815/?colorCode=black

 

https://www.trekbikes.com/za/en_ZA/equipment/bike-accessories/bike-lights/bike-front-lights/trek-ion-pro-rt-front-bike-light/p/41444/?colorCode=black

 

 

I use this.

 

But then you have to use a Trek Bontrager light, or a light with a similar mount.

 

Using the Garmin light, and the integration it brings ... that limits the mounting options.

 

@RaptyrOne I bought a 3m USB cable to charge some light on the bikes.  Having broken straps and mounts just to charge lights, the long cable really works well.  About to buy another.

[RaptyrOne]

Thanks everyone. I came right sort of... going to use the supplied Garmin mount on my Giant Revolt Gravel Bike. For the Trek Madone, I have realised that I can tighten the Garmin light to the bikes out front mounting. When I first tightened it, it remained a bit loose and I was scared to tighten it further, scared it might break something. Took a gamble and a bit of extra tightening keeps it firmly in the bracket. It does mean that it cannot be removed without an allen key (not quick release like the rear radar light) but it is a clean looking solution I can live with.

[Mamil]

13 minutes ago, RaptyrOne said:

Thanks everyone. I came right sort of... going to use the supplied Garmin mount on my Giant Revolt Gravel Bike. For the Trek Madone, I have realised that I can tighten the Garmin light to the bikes out front mounting. When I first tightened it, it remained a bit loose and I was scared to tighten it further, scared it might break something. Took a gamble and a bit of extra tightening keeps it firmly in the bracket. It does mean that it cannot be removed without an allen key (not quick release like the rear radar light) but it is a clean looking solution I can live with.

Better option that the Trek mounts which I have found prone to failure.

[BigDL]

2 hours ago, Mamil said:

Better option that the Trek mounts which I have found prone to failure.

That's my experience as well, at least for the double mounts.