Size Guide
triathlon aero hydration system from www.stealth-parts.com/en-gb for cervelo p-series

Triathlon Aero Hydration System - Size Guide

Which model fits my bike?

The Aero Hydration System is compatible with many bike models. For certain models (Canyon Speedmax CF, Cervélo P-Series) you will find an allocation according to frame size etc. here.


For all other models, you will find an overview of the technical requirements below as well as fitting templates with which you can select the suitable model (S1 / S2 / S3 / S4 / S5).

Canyon Speedmax CF

The Aero Hydration System is compatible with the original stem of the Speedmax CF from 2017 (year of manufacture) onwards. 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".

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

Frame size Stem length Spacer below stem** Model
XS 70mm required S5
S 70mm required S5
S 80mm required S2
M 80mm required S2
L 90mm required S2*
XL 90mm required S2*

* Since this model is also compatible with 10mm shorter stems, the gap between the bottle and the frame is 10mm larger than in our pictures.


** Spacer below stem refers to the component pictured below.

  • triathlon hydration system s2 from www.stealth-parts.com/en-gb on canyon speedmax cf disc size m

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s2 from www.stealth-parts.com/en-gb on canyon speedmax cf disc size s

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon hydration system s5 from www.stealth-parts.com/en-gb on canyon speedmax cf disc size s

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s5 from www.stealth-parts.com/en-gb on canyon speedmax cf disc size s

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon hydration system s5 from www.stealth-parts.com/en-gb on canyon speedmax cf disc size xs

    Bildtitel

    Untertitel hier einfügen
    Button

Speedmax CF (with rim brakes - from year 2017)

Frame size Stem length Spacer below stem** Model
XS 70mm required S4
S 70mm S4
S 80mm without S4*
S 80mm required S3
M 70mm S4
M 80mm without S3
M 80mm required S1
L 90mm S1*
XL 90mm S1*

* Since this model is also compatible with 10mm shorter stems, the gap between the bottle and the frame is 10mm larger than in our pictures.

  • triathlon hydration system s1 from www.stealth-parts.com/en-gb on canyon speedmax cf size m
    Untertitel hier einfügen
    Button
  • triathlon drinking system s1 from www.stealth-parts.com/en-gb on canyon speedmax cf size m

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon hydration system s3 from www.stealth-parts.com/en-gb on canyon speedmax cf size s

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s3 from www.stealth-parts.com/en-gb on canyon speedmax cf size s

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon hydration system s4 from www.stealth-parts.com/en-gb on canyon speedmax cf size s wmn

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s4 from www.stealth-parts.com/en-gb on canyon speedmax cf size xs

    Bildtitel

    Untertitel hier einfügen
    Button

**Spacer below stem

The Spacer below the stem (see picture) is required for some models. If it is removed, the remaining space is not sufficient for some models.

** The Spacer below the stem (see picture) is required for some models. If it is removed, the remaining space is not sufficient for some models.

Cervélo P-Series

The Aero Hydration System is compatible with the original stem of the Cervélo P-Series. The table refers to the standard setup (stem length) for the respective frame sizes.


For frame size 51, model S1 is compatible with a spacer height below the stem of minumum 15mm (model S4 fits below 15mm). For all other frame sizes, the spacers are not relevant.


Di2: The Aero Hydration System takes up the space below the stem. The junction box may therefore have to be placed differently (e.g. on the stem / in the bento box).


If you have made changes to the stem (e.g. different stem length), we will be happy to advise you (contact form).

Frame size Spacer below stem Model
48 S4
51 below 15mm S4
51 from 15mm S1
54 S1
56 S1
58 S1*
61 S1*

* Since this model is also compatible with 10mm shorter stems, the gap between the bottle and the frame is 10mm larger.

  • triathlon hydration system s4 from www.stealth-parts.com/en-gb on cervélo p-series size 48

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s4 from www.stealth-parts.com/en-gb on cervélo p-series size 48

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon aero hydration system s4 from www.stealth-parts.com/en-gb on cervélo p-series size 48

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s1 from www.stealth-parts.com/en-gb on cervélo p-series size 51

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon aero hydration system s1 from www.stealth-parts.com/en-gb on cervélo p-series size 51

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon drinking system s1 from www.stealth-parts.com/en-gb on cervélo p-series size 56

    Bildtitel

    Untertitel hier einfügen
    Button
  • triathlon aero hydration system s1 from www.stealth-parts.com/en-gb on cervélo p-series size 56

    Bildtitel

    Untertitel hier einfügen
    Button

General: Technical Requirements

Does the hydration system fit into my bike?

Your bike must have a 4-bolt stem and enough space to mount the hydration system. For optimal integration into your cockpit, you can choose from five shapes (S1 / S2 / S3 / S4 / S5).


Please check the following technical requirements:

Stem - shape

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 alternatives are listed here.

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).


Stem alternatives are listed here.

Stem - shape

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 alternatives are listed here.

Stem - bolt spacing

The bracket is mounted on the lower bolts of your 4-bolt-stem.


Please measure the outer distance of the screws either on the bolt head (21 - 39mm) or on the thread (18 - 36mm).


Stem alternatives are listed here.

Height

The system requires sufficient space from the lower edge of the bolt heads downwards (installation height). You can choose from five shapes depending on you cockpit geometry and frame size:

  • S1: 122mm
  • S2: 117mm
  • S3: 102mm
  • S4: 62mm / 87mm
  • S5: 117mm (similar to S2 for shorter stems)

Please measure the distance to the center of the rim brake (for disc brakes to the tire). We recommend to use our fitting templates.

Height

The system requires sufficient space from the lower edge of the bolt heads downwards (installation height). You can choose from five shapes depending on you cockpit geometry and frame size:

  • S1: 122mm
  • S2: 117mm
  • S3: 102mm
  • S4: 62mm / 87mm
  • S5: 117mm (similar to S2 for shorter stems)

Please measure the distance to the center of the rim brake (for disc brakes to the tire). We recommend to use our fitting templates.

Stem length and inclination

The system follows the stem and has the same inclination. It fits optimally on stems that run horizontally. This corresponds to an inclination (angle to the head tube - see sketch) of -17°. You find the corresponding information in the description of the stem.


The minimum length of the stem depends on the shape of your frame. Please use our fitting templates, to find out, if your cockpit offers sufficient space.


If you are uncertain, please send us photos of your cockpit and the fitting template from the front and from the side.

Stem length and inclination

The system follows the stem and has the same inclination. It fits optimally on stems that run horizontally. This corresponds to an inclination (angle to the head tube - see sketch) of -17°. You find the corresponding information in the description of the stem.


The minimum length of the stem depends on the shape of your frame. Please use our  fitting templates, to find out, if your cockpit offers sufficient space.


If you are uncertain, please send us photos of your cockpit and the fitting template from the front and from the side.

Stem alternatives

The Aero Hydration System fits many stems. The following selection is compatible in terms of shape and bolt spacing.


Some stems can be mounted both sides. The inclination can therefore be interpreted as +/-.


Please note, that the Aero Hydration System follows the stem and has the same inclination. We do not recommend inclinations between 0° and -5°, as the bottle is a little too steep in this range. Optimal are horizontal models (inclination -17°). Downward tilted stems with an inclination greater than 17° are not suitable.


Some models are available with various inclinations. In the table below, we only show the relevant versions from 6° to 17°.

Stem Inclination in ° Length in mm
Canyon V21 17 70 / 80 / 90
Cervélo P-Series Stem 7 70 / 80 / 90
Giant Contact SL OD2 10 70 / 80 / 90 / 100 / 110 /120
Specialized Comp Multi Stem 12 / 17 * 70 / 75 / 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

* including adapter sleeves for adjustment by 2° and 4°


 ** Steerer clamp 1 1/4 - adapter 1 1/4 to 1 1/8 available:

     Ritchey Stem Shim

Downloads

User Manual

Please read the user manual carefully and follow the steps listed therein exactly.

Fitting Templates

Please print the templates, cut them out and check the fit. Choose your paper format and print at 100% scale.

Fitting templates

Please print the templates, cut them out and check the fit. Choose your paper format and print at 100% scale.

User Manual

Please read the user manual carefully and follow the steps listed therein exactly.

Contact

STEALTH PARTS GmbH

Mörfelder Landstr. 106A

60598 Frankfurt am Main


hello@stealth-parts.com

Contact

STEALTH PARTS GmbH

Mörfelder Landstr. 106A

60598 Frankfurt am Main

hello@stealth-parts.com

Contact us

Share by: