Single bottle BTA system spacer on its carbon mount plate, side view
Triathlete riding in aero position on high-sided armrests
Triathlete on a red TT bike in aero position with a bottle between the arms
Black triathlon bike in a studio with a bottle between the arms on the BTA system
Single bottle BTA system spacer and mount plate, three-quarter view
Single bottle BTA system spacer on the mount plate, angled view
Single bottle BTA system mount plate between two black armrests, seen from above
Triathlete in aero position on a road with a bottle between the arms
Single bottle BTA system mounted between the armrests of a TT aerobar, front view
Triathlon bike in a studio with the single bottle BTA system between the arms
Single bottle BTA system spacer and mount plate in black
Single bottle BTA system spacer on its carbon mount plate, side view
Triathlete riding in aero position on high-sided armrests
Triathlete on a red TT bike in aero position with a bottle between the arms
Black triathlon bike in a studio with a bottle between the arms on the BTA system
Single bottle BTA system spacer and mount plate, three-quarter view
Single bottle BTA system spacer on the mount plate, angled view
Single bottle BTA system mount plate between two black armrests, seen from above
Triathlete in aero position on a road with a bottle between the arms
Single bottle BTA system mounted between the armrests of a TT aerobar, front view
Triathlon bike in a studio with the single bottle BTA system between the arms
Single bottle BTA system spacer and mount plate in black
AeroGain

Single bottle BTA system

The AeroGain BTA (Between/Behind The Arms) system.

  • Fits all standard pad and aerobar systems
  • Bottle placed in the aerodynamically optimal position
  • Seamless clean design
  • Different spacer angle options
  • Choosing the same spacer angle as the angle of extensions results in a horizontal bottle.

  • Comes with a 70 mm spacer. If you require a different height for the spacer, it must be purchased separately.

€119,90 EUR
/
VAT included
Spacer angle (choose the same agnle as your extensions for a horizontal bottle)
Mount plate width
  • Express worldwide shipping with FedEx — 2–4 working days
  • 30-day returns
  • 2-year warranty
  • Crash replacement
  • 14-day satisfaction guarantee
  • Free EU shipping over 200 EUR
  • In stock, ready to ship
  • Backordered, shipping soon

Pairs well with
Triathlete in aero position looking ahead

The AeroGain experience

This isn’t just an upgrade — it’s a statement.

The AeroGain cockpit was built because we were tired of compromising. Too many setups sacrificed either comfort, control, or aero. So we created the system we always wanted — and now we ride it.

Why Choose AeroGain?

We’ve spent hours in the pain cave, the races where comfort slipped, and the long rides where the gear just didn’t work. That’s why AeroGain was built — not to look fast, but to be fast. Every product we make is tested by real triathletes, in real race conditions, before it ever reaches you.

We Built It. They Raced It. Here's What They Say.

★★★★★
The AeroGain mono arm rest completely changed my position. It gave me the stability and support I needed to hold aero for longer — and I felt the difference straight away. It’s honestly one of the best upgrades I’ve made to my setup.

Kate Waugh, T100 Singapore Champion

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