EZ Gains Hydro - Aero Tested! Does it Really Lower Drag?
Weight testing to 33lb of weight and they still held firm, over 600,000 kilometres of road testing with 750ml bottles.
EZ Hydro Gains 12 Watts / ISM PN 3.0 / 3.1 /PN 4.0 / 4.1 CARBON SEAT BUT NOT CARBON RAIL VERSION
AED 950,00
Pay in 4. No interest, no fees with 
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.
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.
To confirm EZ Gains products are designed, manufactured and tested in the UK and confirm to safety regulation.
Registered Designs – EZ Hydro-Gains Trade Marked ®
Out of stock
- EZ Gains Hydro - Aero Tested! Does it Really Lower Drag?
- Pro Triathlete Reviews EZ Hydro Gains Bottle Holder
- THE FASTEST & SAFEST TESTED REAR BOTTLE HOLDER
- EZ Hydro-Gains 7 Watts Savings
- Fitting Instructions
- EZ Hydro Gains - Elastics For Rear Bottle Holder
Pro Triathlete Reviews EZ Hydro Gains Bottle Holder
THE FASTEST & SAFEST TESTED REAR BOTTLE HOLDER
Outside totally independent tests carried out by Jim Manton from FAST or FICTION the riders Adam Harita & Tony Macias, EZ Gains had no idea these test were being carried till the point when Jim contacted us and informed us of these amazing results.
The Fastest Set Up is Two 500ml Circular Bottles 0-6 Degree from a ground level surface.
EZ Hydro-Gains 12.8 Watts
EZ Hydro-Gains 10 Watts
Test Day 13/05/2025
Our test rider was Head Coach of Greenlight PT, Adam Gibson.
Here’s what he had to say…
“It was an exciting day being asked to help test a new prototype rear bottle holder for EZ Gains. Me and Dave (Elysium Race Team) headed down to the renowned Silverstone Sports Engineering Hub to put the product through its paces.
It was my first time in a wind tunnel and after a brief setup and explanation of what was required, we got going. All I had to do was ride at 85 cadence and hold the exact same position within the green lines for an hour or so while Dave swapped on different bottle holders and changed the setup slightly. Sounds easy right?! Far from it. But after an hour of testing, and with very achy shoulders by the end, I was complimented on how good I was at holding the exact same position. This meant we had a really clean set of data to see any changes in drag.
The results were pretty significant with the EZ Hydro-Gains product testing faster than my baseline (no product) and also much faster than a competitor product! Really good news for EZ Gains and I am sure when this comes to market plenty of people will be taking up.”
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.
Features & Benefits of EZ Hydro-Gains:
- Faster than no bottle and standard rear hydration setups.
- 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.
- Bottle position movement 0-15 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
- Ironman and World Triathlon Legal
- 22cm x 9 cm
- 150g
- Ironman, World Triathlon, German Rules Legal
EZ Hydro-Gains Silverstone Wind Tunnel
This has been a quest to develop the Ultimate rear bottle holder that not only holds your hydration without it flying out, it makes you faster as well with a lot of extra features and benefits.
EZ Hydro-Gains 7 Watts
Standard RBH
No Bottle
Time Savings
Over 2 minutes at all speeds using the EZ Hydro-Gains Rear Bottle Holder, you are on the course longer at lower speeds, so even though the watts gains are not as high, the time gains are the same.
Watt Savings with EZ Hydro-Gain
Testing Protocol: Most of a race you will be cycling at 0/5 YAW angle. YAW is the angle of the wind. We only needed to test on one side as both sides of the EZ Hydro-Gains are the same.
Watt Savings at 35kph
Above test conducted at 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.
Watt Saving at 40kph
Above Tests at 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.
Watt Saving at 45kph
Above Tests at 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.
35kph, 40kph, 45kph – YAW 0, 5, 10, 15 EZ Hydro-Gains vs No rear hydration cage / Standard Triathlon setup rear hydration: Baseline Blue – No Bottle Standard Rear Bottle Cage – Orange EZ Hydro-Gains – Brown
Watt Savings at 35kph
Above test conducted at 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.
Watt Saving at 40kph
Above Tests at 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.
Watt Saving at 45kph
Above Tests at 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.
THE HISTORY OF TESTING
For some of our previous tests which we published go to Latest News. EZ Gains have tested many rear bottle setups over the years but have not published all the tests due to time “We will be going through previous tests and adding these”, we never found that any other conventional bottle position gave a significant advantage until the Hydro-Gains:
The safest bottle holder system, “bump tested” this is due to the positioning of the cage, its a lot easier for a bottle to fly out of a vertical holder system rather then a horizontal system due to the force it takes to take a bottle out from the side, its almost impossible.
Also EZ Gains individually make the saddle clamps “and exceeded some existing clamps” for each seat giving you an exact fit rather then a universal clamp which will never exactly fit your saddle.
Another main factor is, the athletes do not need to lean as far back to grab there hydration, thus giving them more control of there bike when hydrating and exchanging bottles.
EZ Hydro-Gains 7 Watts Savings
Fitting Instructions
EZ Hydro-Gains FittingInstructions
Please do screws up to:
3 NM newton-metre or until a firm hand tight.
2 NM newton metre (Double Bottle Attachment) Or good hand tight
Please ensure you check the bolts are tight on a regular basis.
It’s advisable to not use more then two 500ml bottles on the rear if full of hydration, the 500ml bottle tested faster then the 750ml bottles, however we have done a huge amount of weight testing to 33lb of weight and they still held firm, over 600,000 kilometres of road testing with 750ml bottles, but we can never predict how large a pot hole is or your situation, but what we will do is resolve a fair situation.
If the course is absolutely horrendous like the T100 London with over 40 speed bumps being hit at 40kph then you have the choice to run a single.
Adding extra security to the RBH will never go to miss on poor road surfaces in the way of Blue lock thread, this is commonly used across the PRO Field in all areas on the bike.
A=Seat Mount & Screws B=Double bottle Mount and Screws “TIGHTEEN SCREWS TO A STRONG HAND TIGHT OR 3NM”
Features
Change angle / Move forward back
These features allow you to move the bottle close to your arse to maximise aero benefits, also to angle the bottle to preferred angle tighten to 2nm. – refer to science page for data.
Double Bottle Mount – If Purchased
Remove the single bottle mount and screws and attach the double bottle mount with the longer screws tighten to 2nm.
Bottle Tie
Add extra security on bumpy road surfaces, adjust toggle to suit your set up pull tight and tie a knot to secure toggle, toggle is not required you can just tighten knot.
Bottle Tie
Add extra security on bumpy road surfaces, adjust toggle to suit your set up pull tight and tie a knot to secure toggle, toggle is not required you can just tighten knot.
EZ Extension Plate
This allows you to bring your bottle even closer to your butt, optimizing on your aero benefits, it’s totally clear with all the testing we have done that the further forward the bottle and slightly higher up, the faster it is, bottles further back and lower down are a lot slower even leading into negative drag.
