Description
BUNDLE Aero Chainring Guard & Front Derailleur Guard 6-10 Watt Saving
EZ Gains® Aero Chainring Guard (Patent Authorised)
To confirm EZ Gains products are designed, manufactured and tested in the UK and conform to safety regulation.
Smooth the airflow through your chainring for EZ aerodynamic gains and protect your chainring.
Custom engineered to fit all chainring sizes, crankset arms, and power meters.
The Science “Press For Details”
- Save 3-5 Watts
- Weight 42 Grams (with tape)
- Aerodynamic Performance Tested at the Silverstone Wind Tunnel
- Made and Moulded in the UK
- Carbon
Click on the link at the top of the page for fitting instructions.
“Crank arm holes cut to width”
Includes everything needed to fit including 3M tape x 2 carbon tape also included to go on crank arm opening if you choose.
BTF-ETU-ITU Used in Ironman Pro races and CTT races.
Used across events by thousands of athletes at high level pro and amateur and has recently been inspected and passed at Ironman Frankfurt by a head official on a professional’s bike, Ironman World Championships 2023, 2024, ITU World Championship 2023, 2024. ETU Champs 2023, 2024. National CTT races. Global Operations, Rules and Special Projects for Ironman confirmed he has no issues with the EZ Chainring Guard.
I would like to also confirm that the manufacturing of our products follows regulations: ISO14001 ISO9001.
Sizes may differ to give you the best fit. (EXAMPLE BELOW OF POWER METERS AND CHAINRINGS)
EZ Aero Front Derailleur Guard (Patent Pending)
“Avoid power failure due to weather conditions with the front derailleur guard, it has also been designed so that it protects derailleur from the wind throughout the whole range of movement”.
Smooth the airflow of your front derailleur and save a massive 2-5.8 Watts across 30-50 kph.
On the 31st January 2023 at Silver Stone Sport Engineering Hub “wind tunnel”
EZ Gains independently had the EZ AFDG fully tested across YAW angles and 30/40/50kph wind speeds, and the results are out of the park.
50kph 5.8 Watts, 40kph 4 Watts, 30kph 2 Watts.
0 Yaw Watt Saving 30kph = 1.4 / 40kph = 4.1 / 50kph = 5.8
25 grams
Available for DI2 11 – 12 Speed Models – 105 / Ultegra / Dura ace / Mechanical 105 R7000 – Ultegra R8000 SRAM 11 -12 Speed.
(Please not the 12 speed DI2 version has 20% less mass than the 11 speed DI2 & SRAM 11-12 speed the Watt savings on the 12 speed DI2 will be less then above but still a large saving “predicted 20% less”.
Please see the attached wind tunnel on science page.
Used in Ironman Triathlon, PTO Pro Field / BTF / ETU / ITU and inspected
Front Derailleur Guard
This has also been in use across events by hundreds of athletes high level pro and amateur and has recently been inspected and passed at Ironman Frankfurt by a head official on a professional’s bike and Ironman World Championships 2024, ITU World Championship 2024, ETU Championships.
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