🚲 XLAB Delta 425 Rear Hydration System (Black) OPEN BOX: Enhanced Cycling Performance and Hydration Efficiency Review

Excellent mount! Firm and good adjustability. Looks very clean and the bottle fits snugly and snugly under my ISM PN2.0 saddle. The only criticism is that the coating on the mount scratches easily.

Not the cheapest and easiest to install but reliable. This is one of the few systems that will work with ISM Adamo saddles due to the shape of the rails and adapter hook. Great that you can also adjust the angle of the bottle holder. Highly recommended.

UPDATE: I lost a bottle of Xlab tools today ($84 net loss). When I look at the photo I see that it is at a 30 degree angle to gravity. This means that when negotiating bumps (on a road bike) while riding, there are two forces at work: down and backwards. The backward force is definitely pulling the bottle away from the 1" mount while the downward force takes the losses! Bad design. The tab could have been rated at 2 inches. At least I didn't lose my ID and money.

Before buying XLAB Delta 425 I had a profile behind the seat attachment system. It was great running bike bottles and losing pole gear. I threw it away after 6 months of use. This XLAB reading hydration system is the complete opposite. Very snazzy design and attaches fairly well to my Fizik saddle. The cage is strong enough to hold my mezzo pod securely. I've been doing some serious bumpy climbs lately and have faith in this system. After checking the mounting screws, they are very good. I…