EZ Hydro Gains® Up to 12 Watts
LEAD TIME - 7 WORKING DAY DISPATCH DELAY- Due to Massive Demand (FROM 10/08/25)
To confirm EZ Gains products are designed, manufactured and tested in the UK and conform to safety regulation.
Registered Designs - EZ Hydro-Gains Trade Marked ®
THE FASTEST & SAFEST TESTED REAR BOTTLE HOLDER ATTACHMENT AVAILABLE. science page
Full list in "Seat type" EZ Gains makes them for each individual seat for best fitting unlike universal mounts.
Order Now to be first !! 1,500+ sold in the first 8 weeks !! most of the top pros and age groupers this is a must have of rear bottle hydration
Loads of other seats coming soon.
Interchangeable Double & Single if you order double. "order double mount"
Trade Mark applied for Registered Design's Applied for.
Make sure you're signed up to our mailing list for new saddle releases
The purchase is for the Hydro-Gains Rear Bottle Holder Unit and does not include any saddles or bottle cage, it does come with elastics to help keep your bottles in place if required.
Individually fitted to each seat design, please let us know what seat you have!
Outside test double bottle show up to 12 Watts - Fast or Fiction Tests
Wind Tunnel Tests Single Bottle
45kph – 7 Watt Saving at 0 YAW 6.6 Watts 5 YAW vs Standard Hydration Setup 6 Watts 0 YAW 6 Watts 5 YAW faster than no hydration.
40kph – 5 Watt Saving at 0 YAW 4 Watts 5 YAW vs Standard Hydration Setup 4 Watts 0 YAW 3 Watts 5 YAW faster than no hydration.
35kph – 3 Watt Saving 0 YAW 3.5 Watts 5 YAW vs Standard Hydration Setup 1.5 Watts 0 YAW 3.5 Watts 5 YAW faster than no hydration.
The test was done totally independently by the head coach at Greenlight PT Adam who is a well-respected coach for some years, and was the allocated rider. Adam held his position perfectly and was overseen by the Aero Engineer at Silverstone Wind Tunnel.
Dave from Elysium Racing – a well-respected group of elite TT riders – conducted and organised the runs.
I did expect the EZ Hydro-Gains to be slightly faster, I was shocked to see how much faster and would be happy to say with the limited options on the market, that this is probably the fastest rear bottle cage holder that actually holds hydration on the market and has already created a massive backlog of orders, not only for Triathletes but Time Trialists as well.
Rear Bottle Holder Not Included.
Features & Benefits of EZ Hydro-Gains :
- Faster than no bottle and standard rear hydration setups
- Interchangeable Seat Mounts
- EZ to Rack - see images in products
- Manufactured for your seat – best fitting, will not move about.
- Securely holds bottle – added elastic pull for added security.
- Race number area.
- Double bottle mount available.
- Interchangeable Single / Double
- Bottle position movement 0–25 degrees.
- Bottle position movement back and forward.
- Securely holds your hydration as well as adding extra watts.
- Probably the fastest rear hydration system available.
- A great marker point for optimal position on seat
- 22cm x 9 cm
- 150g
- Anti vibration washers
- Ironman, World Triathlon, German Rules Legal, PTO Legal
Please check out our science page for more information.
Email us your seat information to be added to the waiting list.
Pairs well with
EZ Hydro Gains® Up to 12 Watts
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
Shipping Information
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Noticeably made a difference to my times after fitting, would say the watt savings in the videos are increased the faster you go, would recommend
I got in contact with clint about his hydro bottle mount for my A race, The National 24hr! Having come second twice before i was looking for any gains i could get. These are extremely well made and didn't move for the whole 24hrs of the race! I couldn't even tell they were there! I managed to take the win with the 5th furthest distance for the race! 536 miles!! Thank you Clint!
Racing longer events from 50 mile to 12 hour time trials, I’m always looking for efficient ways to carry extra fuel. The Hydro-gains is a great addition to my set-up, which gives me an extra option for bottle placement and I now have the ability to carry 5 bottles for the longest races and training rides.
The best part is that this comes with no speed penalty, quite the opposite! My first test of the system was in a club 10 mile TT where I set a course PB, 6 seconds faster than the week before for the same power, and I followed that up with a win in a 50 mile race the next weekend!
EZ Gains HQ is local to me, so I popped in to collect my order, and Clint went to the trouble of installing it for me while I was there. Great service!
EZ Instal: clean & tidy no mess fits perfectly with plenty of adjustment if needed, looks well with the rest of my EZ products 🔥
After my Track Test I can say that this is no 12 Watt Tool for me - maybe it would be a bit more Customer Friedly to advertise „up to 12 Watts“
If you did read at the science page https://ezgains.co.uk/pages/rear-bottle-holder-science and read the product page and the fitting page it clearly explains the gains from the Hydro-Gains, these were all totally independent tests, and not carried out by EZ Gains so you do not get any fairer than this.