Saddle Water Bottle Holder | Triathlon Gear | Under Saddle Bottle Holder | Dual Water Bottle Cage Mount | Behind Seat Mount | Bike Water Bottle Holder | Bicycle Water Bottle Cage Holder

Possibly the best rear water bottle holder for a single or double water bottle on the market. There are a lot of pros and one big con, but despite that, it gets 5 stars. Let me cut to the chase: its build quality and lightweight design make this a real winner—but the bolts are the con. You can’t screw steel bolts into aluminum threads without risking damage over time. Spend an extra $5.00, go to the hardware store, and get longer bolts that pass through the aluminum threads so you can secure them with steel nuts. That’s it—$5.00 makes it a 5-star item. I think the reason they don’t supply the bolts is because, depending on your seat and seat post design, it’s damn near impossible to get those nuts threaded on. I did it, but I’m handy. Buy it—but if you’re not prepared to buy the longer bolts and thread some steel nuts on the end, skip this purchase.

Light weight and easy to install

Works well - lightweight and fairly easy to install. However, on my typical bike (Specialized Roubaix) I had to get out the Dremel and cut off the metal corner of the mounting bracket so that the holder could use the tilt angle without hiting the seat bracket. Without tilting the bottle holder does not extend out far enough and ends up hitting your rear end. Could be improved, but once I cut the excess metal so that it could tilt it worked very well.

The product works as generally expected. I was able to carry two extra water bottles on my bike, which is great. However I am no longer able to fit my saddle bag. I had theorized that I would have been able to attach the saddle bag to the lower section, but its only barely possible if you fit it at the 5 deg angle (not at the 25 deg angle). It would have been better if the lower section had something like rails, so you could still mount other rail mounted products below it...saddle bags, lights, etc. On rough roads, becasue of the way the product flexes, it will eject your water bottles. I've lost a bottle already. I've had to use a 'bodge' of a fix with some old tubes to secure the water bottles so they dont go flying. Also, If you have your seat all the way forward so the rails aren't exposed at the back, this product won't work for you. UPDATE 2023-05-10: So the screws in the product have started to come loose. One side is unusable for me now, because the top screw holding the the botle cage mount is now gone.

Easy to install. Very solid. I use dual bottle cages, 2 CO2 cartridges, and a spare tube. The space between the arms of the bracket is perfect width for a spare tube. I use a couple Velcro straps to secure the tube. I still have plans to make a small bracket to attach my tail light to the center bottle cage mounting holes. THEN I will have the perfect set up for my Tri bike. You could spend 5x the money and save a couple grams. I think this is the right choice unless ESPN is following you with a camera crew.

Terrible quality. The screws stripped right out - now impossible to mount to saddle.

I had a Profile design rear double bottle holder made of cast aluminum that broke in the middle of a ride and I lost two water bottles and a blinky light (that I hope keeps cars from running me over). I ordered this part and was able to salvage the cages from the broken part and this one so far seems great, it is made of sheet steel so it can't shear like a cast metal. Easy to install also on my tri-bike.

Screws keep losing. Very heavy