Aero BTA system with high-sided armrests, holding two bottles

Triathlon bike on a velodrome with the Aero BTA system and high-sided armrests

Aero BTA system with high-sided armrests and two AeroGain bottles, side view

Aero BTA system with a bottle on the mount plate, front view

Aero BTA system with high-sided armrests, bottles and cages, side view

Aero BTA system holding a white bottle between high-sided armrests

Aero BTA system with a computer mount, close-up

Aero BTA system with High sided armrest

Name: Aero BTA system with High sided armrest
Brand: AeroGain
Price: 279.9 EUR
Availability: InStock

€279,90

Which plate fits my bike?

BTA plate width

Angle (Choose the same angle as your extensions for a horizontal bottle

30-day returns
2-year warranty
Crash replacement

Complete aero and support system combining our fastest BTA design with high-sided armrests for improved stability and sustained aero riding.

Median 8 W saved at 45 km/h versus riding with no bottles, up to 14 W at best (35 riders), by positioning hydration between and behind the arms
High-sided armrests provide increased forearm support, helping you stay aero for longer
Multi-angle spacers ensure the bottle stays perfectly horizontal, regardless of extension angle
Modular, race-ready setup compatible with most modern triathlon cockpit systems
Needs a gap between the extensions, because the plate’s bolts protrude below it. Fits, among others: the Specialized Shiv TT, Argon 18 E-117 and E-118, Cervélo P-Series, Trek Speed Concept, BMC Timemachine 01 Disc and Speedmachine, Cadex Tri, Cube Aerium C:68, Factor Hanzo, ONE and Slick, Giant Trinity Advanced SL, Felt IA 2.0, Quintana Roo V-PRi, Cannondale SuperSlice and bikes with Vision Metron TFA aerobars; not the Specialized S-Works Shiv Tri, Argon 18 E-119 or Cervélo P5.

Made in DenmarkDeveloped and produced in-house

Two-year warrantyAnd 30 days to return it

Crash replacement

Fit questions answeredSend us your bike model

Part of the Aero BTA system

Bottles between the arms are faster than no bottles at all.

Median saved by the Aero BTA system at 45 km/h, against riding with no bottles. 35 riders on the Ballerup velodrome; up to 14 W at best.

See the Aero BTA system →

Power saved at 45 km/h against no bottles, median

Two bottles on the frame

−6 W

No bottles

0 W

Aero BTA system35 riders

8 Wbest 14

Bars: median · faded: best measured rider

In detail

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Details

The ultimate setup

Our newest BTA system combined with out high-sided armrests, for an aerodynamic system with high forearm support, enabling you to stay for longer in your aero position while cutting drag.

Engineered to cut drag where it counts
This upgraded Between/Behind‑The‑Arms (BTA) system positions your bottle exactly where it matters—just behind the elbows or tucked close to the chest—saving a median of 8 W at 45 km/h versus riding with no bottles, up to 14 W at best (35 riders)

Performance-centric design
Designed to clamp onto standard pad bridges and aero bars, the clean, integrated look matches a minimalist cockpit, while offering multi‑angle spacers (0°, 10°, 15°, 20°) for precise setup. Pick the spacer that mirrors your extension angle, for a horizontally placed bottle. (See video below detailing how to choose the right angle).

Modular, customizable, and race‑ready
– Choose your BTA plate width (medium/wide/extra‑wide).
– Needs a gap between the extensions, because the plate’s bolts protrude below it
– Durable build, sleek matte black finish—minimalist outside, maximum race‑mode inside.

Includes

– Aero BTA mount compatible with one or two bottles, in any desired angle
– Mount plate in one of three widths
– High-sided armrests Tri Version (140 mm length)
– All necessary bolts and padding

*Computer mounts and bottle cages are not included and must be purchased separately.