POWER BUNDLE Aero Chainring & Front Derailleur Guard 6-10 Watt Saving

BUNDLE Aero Chainring Guard & Front Derailleur Guard  6-10 Watt Saving

EZ Power Chainring Guard (Patent Pending) 54T + ONLY

This version is suited to flat face chainrings such as PCD, D2Z, Past Quest also Power meters which are fitted to the drive side of the crank Quark, 9200-P, R8100 -P etc.

Please see samples of Power Meters and Chainrings in the pictures section.

Smooth the airflow through your chainring for EZ aerodynamic gains and protect your chainring.

Please note the above product is not available for the 12 Speed Shimano cranks, this is due to the large crank arm.

The Science "Press For Details"

• Save 2-5 Watts
  
• Weight 42 Grams (with tape)
• Aerodynamic Performance Tested at the Silverstone Wind Tunnel
• Made and Moulded in the UK 
• Polycarbonate 

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.

Aero Chainring Guard

We have also had confirmation that Ironman has no issues with the Chainring Guard and has now been used by thousands of athletes across all events, ITU,ETU in all countries across the world.

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 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 armature and has recently been inspected and passed at Ironman Frankfurt European Championships by a head official on a professional's bike.