AeroCoach Ascalon carbon aerobar extensions
Please note - Ascalons are in stock, please allow 1-3 days for assembly and dispatch.
For Titanium Ascalon SL extensions, click HERE
For compatibility please read through the information below. If you have any queries about compatibility then get in touch using the message form on our Contact page.
STABILITY/COMFORT/BIOMECHANICS
AeroCoach Ascalon extensions are an ergonomic and aerodynamic replacement for standard extensions. Using our Align Wing carbon arm rests, and providing extra support for the forearm and wrist you can improve your handling and stability on the bike when in the aero position.
Ascalon extensions are aerodynamic and lower total system drag by up to 1% compared with Angles extensions. This is worth approximately 2w at 45kph, or 4w at 55kph.
BIKE-SPECIFIC ADAPTERS
We offer a large range of bike specific adapters, for a setup that is specific to you and your bike. Please get in touch here if you have a bike or base bar system that isn’t listed in our base bar adapter dropdown menu and we can help out!
UCI REGULATIONS (2023 UPDATE)
For an explanation of the UCI regulations and the various Ascalon options to achieve regulation heights, please see our blog post here. Details of Ascalon reach measurements can be found further down this page. If you would like further advice on keeping within UCI restrictions with Ascalons, please contact us here.
ASCALON INFORMATION VIDEO
ASCALON OPTIONS:
1. BASE BAR ADAPTER
For information on our more proprietary Ascalon adapters, please see the video here:
For other accessories please see the Ascalon accessories page here:
2. ADAPTER ANGLE
Argon E119 Tri+ Disc (monopost) – adapter has a base angle of 15deg which can be tilted upwards to any angle up to 35deg.
Cadex Tri –adapters are available in 15 or 25deg angles, and are compatible with the 5deg wedges provided with the Cadex Tri to fine tune these angles further.
Trek Speed Concept (rim brake) (monopost) – adapter has a base angle of 15deg which can be tilted upwards to any angle up to 27deg.
TriRig Alpha One (monopost) – adapter has a base angle of 10deg which can be tilted upwards to any angle up to 27deg.
Ascalons come in five options, all of which can be used in UCI and triathlon events:
4. EXTRA REACH GRIPPERS
Grippers can be made with an additional 40mm of reach added to the straight part that follows the lower arm. Please refer to the reach diagrams further down this page which show dimensions without extra reach added.
5. SRAM SHIFTER MOUNTS
6. COMPUTER MOUNT
An integrated computer mount is available for either Garmin and Wahoo computers. There is a weight limit of 120g for accessories mounted underneath the head unit using the optional action mount.
The standard computer mount puts the Garmin / Wahoo level with the inside of the wrists. The high computer mount puts the Garmin / Wahoo just above the level of the wrists (please note that the UCI height measurement is taken from the centre of the arm rests to the highest point on the extensions - this may be the bicycle computer with the high computer mount). Images of computer mount options can be seen in the image section on this page and on the Ascalon accessories page here.
7. ARM RESTS
Ascalon extensions use Align Wing carbon arm rests. If you already own these, they will be fully compatible with Ascalon extensions. Bolts will be provided with your Ascalon purchase to attach your current Align Wing carbon arm rests.
8. BTA MOUNT
For more information on the Ascalon BTA bottle mount, please see here. BTA mounts come in two widths – we will supply the right width for your Ascalons based on your base bar adapter selection.
9. EXTRA BOLT PACK
The dimensions of the extra bolt pack refer only to the height of the aerobar stackers being used (i.e. a '+20mm extra bolt pack' means that additional bolts will be provided to account for 20mm of aerobar stackers being used in addition to the Ascalon and tilt block adapter).
The extra bolt pack dropdown selection applies to:
- tilt block adapters (adapter dropdown menu includes the words “tilt blocks” in the description), apart from: universal M5 and M6 tilt block adapters, Bianchi Aquila, Cannondale Superslice, Dare TSRf, ENVE SES, Pinarello Bolide F disc brake and Zipp Vuka Stealth for which base bar bolts are not provided.
DIMENSIONS
Ascalons have a wide range of adjustability for reach and also arm rest width and arm rest angle.
1. Arm rest adjustability:
2. Reach adjustability:
To calculate the reach range for your bike, please add the reach measurement for your specific adapter (geometry diagrams below), to the reach range for Ascalons (255-305mm for long gripper Ascalons excluding shifters).
Example 1: Ascalons mounted on tilt block adapters (e.g. for Pro Missile Evo) can be adjusted between 255-305mm (255-305mm + 0mm) from the centre of the rear base bar mounting hole, to the tips of the Ascalons excluding shifters.
Example 2: Ascalons mounted on the Specialized Shiv TT disc adapters can be adjusted between 292.5-342.5mm (255-305mm + 37.5mm) from the centre of the rear base bar mounting hole, to the tips of the Ascalons excluding shifters.
Please note: dimensions are based on standard (not extra reach) grippers

WEIGHT
560g (pair) including arm rests
WHAT'S INCLUDED
1x pair of Ascalon extensions (carbon fibre body, Nylon end gripper)
1x pair of Align Wing Carbon arm rests
1x pair of tilt block adapters (or alternative adapters)
All stainless steel bolts required for fixing
Usage: Indoor/Outdoor