CyclingDeal Bike Bottle Cage Saddle Mount Adapter for 2 Bottle Cages - MTB Road Bicycle Saddle Rail Mount Water Bottle Holder with Adjustable Angle - Aluminium Alloy Adapter for Road Use ONLY

I got the single bottle cage model and it works flawlessly it. It doesn't come loose and will hold a full bottle without issue, when over large bumps. My scale shows 52.8g for it, 48.6g with 3 of 5 bolts replaced with titanium bolts, and only 73.7g for the mount with a 29g carbon fiber bottle cage. I suspect the last two bolts could drop another 4 grams for a total of only ~44.5g for the single mount with all titanium hardware and no bottle cage. One criticism is that the stock bolts have a very small head, making it a little more challenging to seat an allen head in.

So to be fair, I'm sure this water bottle cage works fine on a road bike, riding on smooth surface. But I do not recommend it for trail riding on a mountain bike. The bottle constantly bounced out and fell in the ground. Eventually I did not notice and lost the bottle. So I am giving it only one star for that particular use, but if you are buying this product for road riding I'm sure you will be fine.

I bought an e-bike that has a very small space for a bottle cage. Can barely fit a small bottle in it. So this accessory was just what I needed. It installs easily under your seat to the seat rails, and you can attach two bottle cages of your choice to it. On the sides it has small ridges so you can adjust the angle of the cages to just how you want them. I can now carry two 30oz water bottles behind which is plenty for most days out on the trails. The original spot for a bottle cage is now just for JBL Flip 6 speaker which fits perfectly.

Mine mounted under my seat just like the illustration. I have 2 16oz bottles and when both are full they ride fine. I have an e-bike with 4 inch tires so I can navigate some bumpy trail/terrain and they stay in the rack nicely. The build quality and engineering make it well worth the price for me.

It works, leave it at that. It's flimsy when 2 full bottles are on there, but they stay secure. However, I used mine for a little over a year and the clamps that mount to the seat wore through the plastic and the holder and bottles fell off, so now it is unusable. Wouldn't say avoid, but just something to note.

I got the 2X bottle holder version of the adapter. I previously had one from different brand that always came loose eventually. This CyclingDeal adapter works great. It doesn't have any of those problems. The seat rail calm design works great. No coming loose. The design of the arms to attach the bottle cages works great as well and are adjustable. Overall it is well designed, sturdy, adjustable and lightweight. I highly recommend this! Best regards!

I got the double mount, and it was a pretty easy installation. I was able to secure on the screws under the seat very tightly and the bottle cages were very firm on stress test. However, I've been noticing that the screws start to come loose during my rides (up to 50 or so miles in each time) regardless of how crazy tight I screw them in (them = the two screws that clamp the hinge parts in under the seat). I even lost one of the hinges and screws somewhere into the bushes by the road the first time it happened since I didn't expect the screws to come loose so early into my ride. I consequently lost a water bottle that smashed into the road and broke, so now I have a broken water bottle and a lost hinge/screw set...For a temporary fix I stole some parts from a different bottle mount to keep this one functional, but to continue my long bike rides I need to constantly check the "wiggliness" of the bottles mounted behind my seat after every slight bump in the road, and tighten the screw(s) with the tiny hex-wrench under my seat up to every 25 miles or so into my rides. I would give additional stars if their customer service would be able to at least provide me with replacement parts, or a replacement product in case the one I got just happened to be defective, but I'm seeing from the reviews that they're might not be very responsive...I may update this review if they contact me after I reach out to them.

The seat rails on my road bike are angled where I needed a bottle bracket that could be positioned at an angle. This one worked perfectly. Very well made, adjustable, and pretty much a universal fit.

Works a treat - I used it to attach a holder for an ABUS BORDO LITE 6055 lock. Screws were too short for the thickness of the holder but I had spares. Saddle bag I have just fits in front of the holder. It is a Speedsleev Ranger Saddle Bag - Small.

Came loose and I lost two bottle on first rise. Everything was tight before leaving. This thing cost me as I need new bottles now. Don't buy this.

The screws loosen while you ride. I’ll try to get better ones from Bunnings to make it work.

It has a bit of weight and stregth to it which gives the feel it can last through the abuse my bike will be put through when mountain biking. The bracket weighs 95g. It is a black alloy metal. I love that you also get 4 screws and washers for mounting the bottle cages. Very thoughtful. See video for full review.

Used for 2 or 3 long rides before an Ironman and seemed to be solid and stable, then on race day the first adjustable piece fell off at about 20km in, with the 2nd falling off at about 80km :(. Other reviews suggest it works well so potentially just a faulty product.