Equipment review: Speedfil Hydration System

One of the things that bothers me the most during training and races is hydration. When looking at a bike to buy, one never factors in hydration. Its all about the bike fit. Well in triathlons, hydration can be key in races that can be as short as 1 hour to over 8 hours. Unfortunately, most time trials/triathlon bikes come with a single bottle holder mount. This means that you might have 20-24 oz of fluid. Not very good.

The first improvement in this area is the behind the seat bottle cage mounting system. When I first purchased a tri bike, I got one of these. The benefit of this system was that I could strap CO2 cartridges, inflators, spare tubes, and tire levers to it as well as two water bottle cages. This now increased the fluid capacity to 60-72 oz. All well and good until you no longer have your bottles. In the first year, I spent more time stopping, turning around, and collecting a full bottle that had been launched after hitting a bump in the road. People that use this system know exactly what I'm talking about. I tried multiple types of cages and bottles and nothing seemed to work.

The next system is the behind the seat fluid system by NeverReach. This system looks like a motorcycle gas tank attached behind you. It holds 64 oz of fluid and can be refilled on the fly. A tubing system goes from the rear of the bike to the front and has a bite valve for drinking. While this system looks good, when full the system holds like 3 pounds of fluid. I wouldn't feel safe with a couple small screws hold that much weight over my rear wheel with competitors behind me.

The final system that I found is the Speedfil system by Inviscid Design. The system holds 40 oz of fluid, has a port to refill fluids on the fly, and a port for a tubing/bite valve system to run to the front of the bike. Unfortunately, my current Cervelo P2-SL only has a seat tube bottle cage mount. At the time I was looking at it, the system could not be mounted to a seat tube. One year later and the company came out with a mounting bracket. Perfect! I ordered the system the week before my half ironman. The system provides aerodynamic benefits over a standard wattle bottle, holds more fluid, can be covered with a neoprene sleeve on both the plastic and the tubing, and is a perfect fit into the bottom triangle of the bike. Here is the installed system on my bike:


As you can see, the design fits nicely into the bottom bracket area. It is narrow so it is out of the wind and is a system that is hands free (until you need to refill it) allowing the rider to stay in the aero position while drinking. The tubing runs up the down tube to the aerobars and is comes with a cover with a wire in it that retains a specific position. I didn't like the wiring so I borrow a hair elastic from the wife and it snapped back upon release along the aero bars. There is an optional neoprene cover to allow your liquids to stay cool on those longer rides on hot days. The only drawback to this system for me is I haven't quite learned how best to refill it on the fly. I'm sure this is just practice. For $99, you get an aero hydration system which you never have to stop... don't have to worry about carrying a tank... and don't have to reach behind you for bottles that may or may not be there.

Well worth it!