Triathlon Aero Hydration System - Size Guide
For certain bike models we provide a detailed allocation of our models S1 - S5 by frame size and stem length. For all other models refer to 'Other / General' for an overview of compatible stems and fitting templates for model allocation.
Canyon Speedmax CF
The Aero Hydration System is compatible with the original stem (V21) of the Speedmax CF for model years 2017 - 2023. Please note the different allocation for models with disc brakes (disc) and models with rim brakes (previous model). You can find the stem length on the side of the stem, next to the label "V21".
1) Canyon Speedmax CF Disc (with disc brake & V21 stem)
Please note: the system is not compatible with the integrated cockpit of the Speedmax CF Disc 2024
* The photos show our model S2 on size S and M bikes with 80mm stem length. Frame sizes L and XL are supplied with 10mm longer stems. The gap between the bottle and frame is correspondingly 10mm larger.
** Spacer below stem refers to the component pictured below.
2) Speedmax CF (with rim brakes - from year 2017)
* The photos show our model S1 on a size M bike. Frame sizes L and XL are supplied with 10mm longer stems. The gap between the bottle and frame is correspondingly 10mm larger.
Cervélo P-Series
The Aero Hydration System is compatible with the original stem of the Cervélo P-Series, supporting both, the latest generation (with ST36 Stem) and the previous generation (with Alloy Stem).
The tables refer to the standard setup (stem length) for the respective frame sizes.
1) Latest generation (from 7/2024)
2) Previous generation (until 6/2024)
Models with Di2 shifting system: The Aero Hydration System takes up the space below the stem. Consequently, the junction box may require repositioning (e.g. on the stem or inside the bento box).
* For frame size 51, model S4 is always compatible. From a spacer height (below the stem) of at least 15mm, model S1 is also compatible.
** The photos show our model S1 on a size 56 bike (yellow). Frame sizes 58 and 61 are supplied with 10mm longer stems. The gap between the bottle and frame is correspondingly 10mm larger.
Other / General
- Use the list below to check whether your stem is compatible / replace it with a compatible stem
- Find the optimal model (S1 - S5) by using our fitting templates: Download
Compatible Stems
Below you find an overview of stems with geometry compatible with the bracket of the Aero Hydration System. If you would like to use a different stem, please check the technical requirements.
Note: The Aero Hydration System is not compatible with integrated cockpits.
| Stem | Inclination in ° | Length in mm |
|---|---|---|
| Bontrager Elite 31.8 | -17 | 75 / 90 / 105 / 120 |
| Bontrager Elite 31.8 | -7 | 60 / 70 / 80 / 90 / 100 / 110 / 120 |
| Canyon V21 | -17 | 70 / 80 / 90 |
| Cervélo P-Series Alloy Stem (until 6/2024) | -7 | 70 / 80 / 90 |
| Cervélo P-Series ST36 Stem (from 7/2024) | -8 | 70 / 80 / 90 / 100 / 110 / 120 / 130 |
| Giant Contact SL Aero (Propel Advanced) | -10 | 80 / 90 / 100 / 110 / 120 / 130 |
| Giant Contact SL OD2 | -10 | 70 / 80 / 90 / 100 / 110 / 120 |
| Profile Design 1/Seventeen | -17 | 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 |
| Profile Design 1/ZeroSeven | -7 | 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 |
| Ritchey Comp 4-Axis 44 84D | -6 | 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 |
| Ritchey Comp 4-Axis 44 73D | -17 * | 60 / 70 / 80 / 90 / 100 / 110 / 120 / 130 |
| Specialized Comp Multi Stem | -12 / -17 ** | 70 / 75 / 90 / 100 / 110 / 120 / 130 |
| Zipp Service Course | -6 / -17 | 70 / 80 / 90 / 100 / 110 / 120 / 130 |
* Steerer clamp 1 1/4 - adapter 1 1/4 to 1 1/8 available:
Ritchey Stem Shim
** including adapter sleeves for adjustment by 2° and 4°
Other stems - technical requirements
The exact geometry of the stem is crucial for optimum functionality. If you are using a stem that is very similar to those listed above, you are welcome to contact us. Please check the following technical requirements in advance and send us pictures of your stem from the front and from the side.
Stem - shape front plate
The bolt heads of the stem bolts must be fully visible.
The Aero Hydration System is not compatible with stems with deeply recessed bolts. A flush / non-positive assembly is not possible in this case.
There are a few exceptions, such as the Cervélo P-Series stem, which is compatible due to the special geometry of the front plates although the bolts are recessed.
Stem - bolt spacing
The bracket is mounted on the lower bolts of your 4-bolt-stem.
Please measure the outer distance of the bolts either on the bolt head (21 - 39mm) or on the thread (18 - 36mm).
Downloads
User Manual
Due to a product update, you will find two versions of the assembly and user manual here. Please choose the version that corresponds to your order date.
Order date from 01.03.2025
Download A3Please use version A3 of the User Manual if you ordered the Aero Hydration System / Bundle / Bundle + on or after Match 1, 2025 (order date!).
Please read the user manual carefully and follow the steps listed therein exactly.
Order date until 28.02.2025
Download A2Please use version A2 of the User Manual if you ordered the Aero Hydration System / Bundle / Bundle + on or before February 28, 2025 (order date!).
Please read the user manual carefully and follow the steps listed therein exactly.
* Prices for deliveries within the EU including the statutory VAT plus shipping costs. Prices for deliveries outside the EU are shown net