Wind Tunnel Tested
Add to Any Bottle Mount
Additional Nutrition Storage
The Aerodynamics:
The oncoming airflow gets redirected by the EZ BTA Bullet to follow a smoother path, reducing drag inducing vortices that it might experience when it hits the flat wall of a normal bottle. These airflow contours help show you how the air will travel more smoothly when you use the EZ BTA Bullet. Even when an athletes arms are in front of the EZ BTA Bullet, the more turbulent air will still benefit from having a smoother surface to guide its travel, reducing the separation and therefore drag at the bottles flat edges when there isn't an EZ BTA Bullet.
Tested and Approved by the World Champ
Casper Stornes tests faster with the EZ BTA Bullet, even with a highly optimised set up like his! His TT plate on the front reduces drag saving of the EZ BTA Bullet and he still saved 3.5 watts!
Tested and Approved by the World Champ
Jelle Geens 70.3 World Champ
Watt Savings at Different Speeds
At 40km/h it is estimated that you can save 3 Watts, and this was with an already highly optimised athlete, meaning for age-groupers we estimate it will be even more! This data indicates that the horizontal setup is more optimised than the placing your BTA at a diagnol with the EZ BTA Bullet, but both are far more aero than without the BTA Bullet.
Save ~2 Watts at 30km/h
Save ~3 Watts at 40km/h
Save ~4 Watts at 50km/h
World Record Attempter Caroline Livesey:
Caroline tests faster with the EZ BTA Bullet, saving close to 6 Watts at 50km/h! This is crucial for reducing energy wasted especially on the flats, and making sure to go faster on downhills! Where the headwind is stronger, which is likely for Caroline's record attempt in North Scotland, the airspeed will likely be very high meaning she will gain a lot of time from using the EZ BTA Bullet.
Caroline's Watt Savings at Different Speeds
We want to show that the EZ BTA Bullet is saving Watts for all kind of athletes! Here are Caroline's Watt savings.
Saved ~1 Watt at 30km/h
Saved ~3 Watts at 40km/h
Saved ~6 Watts at 50km/h
Fenella Langridge: from Optimal to Even More
Fenella is already highly optimised, with several previous wind tunnel sessions finding more Watts becomes harder. With the EZ BTA Bullet she gets those extra at the speeds she races at.
Fenella's Watt Savings at Different Speeds
Fenella's results highlights the transparency EZ Gains are showing. Whilst she's not saving the most Watts, she still makes gains at higher speeds. During the tunnel testing her head position slightly moved which influenced the results, showing that the EZ BTA Bullet is a great tool for athletes not loose Watts during the later stages of a race where position fatigue may set in.
Similar Watts at 30km/h
Saved ~1 Watts at 40km/h
Save ~2 Watts at 50km/h
EZ BTA Bullet®2-4 Watts
EZ BTA Bullet: Aero Gains + Smart Storage
Will not work in conjunction with the TriRig computer mount.
The EZ BTA Bullet delivers free speed while providing a clean, secure space to store a spare gel right between your arms, right where it belongs.
Wind Tunnel Proven
Tested on 1st December 2025 at the Silverstone Sports Engineering Hub Wind Tunnel with World Champion Casper Stornes, the EZ BTA Bullet delivered:
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+3.5 Watts gain on Casper’s elite aero cockpit system
Further testing showed even greater gains when fitted to standard cockpits, meaning:
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Most age group athletes can expect even bigger improvements
Why It Works The Bullet:
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Smooths turbulent airflow between the arms
- 40 Grams
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Reduces drag around the cockpit
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Doubles as on-course gel storage without disrupting aerodynamics "WT Legal due to gel storage"
A simple add-on. A smart place to store nutrition. Proven speed.
Universal compatibility. Works with any standard bottle cage and mounting system.
Supplied with:
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Elastic retention band (For X1 secure gel storage)
- Fits bottle cage systems / BTA Systems
Trade Mark No: UK00004313825