Valdora Behind Saddle Bottle Cage Rack Rack with 2 Bottle Cages | A Key Triathlon Bike Accessory | A Behind Seat Bottle Holder That Performs | for Road and Triathlon Specific Bikes Only

I have a bontrager tri saddle installed on my bike, and wasn't sure based on other reviews how this would fit. But I bought it anyway, and at first was disappointed that it seemed like my rail system was too thick. But I kept messing with it and now it's on there beautifully. I haven't ridden with it yet, but so far it seems good. And as a bonus, my saddle bag still fits under there!A couple of rookie mistakes I made that might help others: the clamps will fit, you just may need to push a little harder to get them to snap on. They also spin. I thought for some reason the open ends needed to face outward. Spinning it around fixed that issue. I had to completely disassemble the cage apparatus in order to adjust the lean angle. There might have been a better way to handle adjustments to position.

The vibrations from the road caused the holders to come loose a couple times, so I got out my ratchet and fixed the problem! :) It's great now! :) It fits great on my tri-bike. You need to have to metal posts, or bar under your saddle for it to attach to.

I would not recommend this product to anyone on account of the flimsy, plastic cages that are used. My first time out both cages broke and the bottles were empty. I was doing a trial run to make sure the angle the bottles were adjusted at wouldn't cause any interference. As I set the bike down from carrying it outside, it slipped and dropped a scant two inches or so to the ground. On impact, both cages broke. Fortunately this didn't happen on a bumpy road where I might have lost my water bottles.The water bottles were a snug fit, but weren't forced. This could be an excellent product if they had used better quality cages. Perhaps even metal or some alloy like the mounting bracket. Both because they used plastic cages that break, I can't give anything but a poor review. I haven't even had a chance to use this on a long ride yet.

A great value for an entry level system

warning- it doesn't fit all saddles. I have a tri-specific saddle which for some reason has an ever so slightly wider rail system underneath. I tried this on my standard road bike saddle and it fits, but not for the tri bike. Very disappointed because I can't find a rear-mounted double water bottle system that fits...no way a seat post mount is going to work either. The tri bike has a very non-standard shape.