Profile Design 43 ASC PRO Extensions 350 mm: extensions designed for an aerodynamic position

Carbon fiber extensions, 350 mm long

The Profile Design ASC Pro Extensions 350 mm are the intermediate version of the ASC Pro range. Their one-piece design combines the extensions and armrests into a unit developed for triathlon and time trial bikes.

The extension body is not adjustable in length. Profile Design therefore offers three distinct sizes to accommodate different positions: 325, 350, and 375 mm. This 350 mm version falls between the other two lengths.

The ASC Pro aims to offer comfort and aerodynamics comparable to a custom cockpit, while retaining adjustments to fine-tune the riding position. Its installation requires specific ASC Pro mounts and a base handlebar compatible with the A3 or A2 systems.

Integrated construction

One-piece assembly

The extensions and forearm supports are combined in a single structure to achieve a continuous shape.

Design inherited from the Sonic Stryke

The ASC Pro marks Profile Design 's return to one-piece extension cables, a category the brand had developed with the Sonic Stryke nearly twenty years earlier.

Non-adjustable shape

The body length cannot be changed. The size must be chosen before installation.

Length of 350 mm

Intermediate dimension

This version measures 350 mm and occupies the intermediate position in the ASC Pro range.

• Short version available: 325 mm
• Intermediate version: 350 mm
• Long version available: 375 mm

Choice based on position

The choice of length depends on the cyclist's morphology, the desired length for the cockpit, and the adjustment possibilities offered by the bicycle.

Aerodynamics

Continuity between components

The integrated construction limits the breaks in shape between the extension and the support area of the forearms.

Settings designed around airflow

The system was developed to retain as many adjustment possibilities as possible without compromising its aerodynamic qualities.

An alternative to a custom-designed cockpit

Profile Design announces a level of comfort and aerodynamics comparable to that of a custom handlebar.

Adjustment

Position that can be optimized

Although the extension body is fixed, the position can be adjusted using the brackets, spacers and compatible handlebar riser system.

Supports with two offsets

• ASC Pro Bracket with 5mm offset
• ASC Pro Bracket with 15mm offset

Exclusive mounting on ASC Pro brackets

The extensions cannot be installed on conventional brackets. Their screw spacing and the shape of their mounting surface require the use of ASC Pro Brackets.

A3 compatible hangers

Direct installation

The ASC Pro bracket belongs to the A3 lift system and mounts directly onto the corresponding components.

• Profile Design Wing20C+
• Profile Design Wing20C+ II
• Profile Design Wing Ultimate S
• BMC Speedmachine basebars
• Canyon CP0041

A2 compatible hangers

A2-A3 Conversion

A handlebar using the A2 system can accommodate the ASC Pro after the addition of an A2-A3 adapter.

Added 15 mm

The conversion adds 15 mm to the height of the spacers.

• Profile Design Aeria Ultimate
• Canyon HB0053
• Cube Aerium C:68
• Orro Venturi Tri
• Scott Plasma 5 Creston IC TT
• Wilier Turbine
• Wilier Turbine SL

Compatible bicycles

Bicycles equipped with a Wing20C+ or Aeria Ultimate handlebar

Any bike already equipped with a compatible Wing20C+ or Aeria Ultimate base handlebar can receive the system according to the conditions indicated by Profile Design .

Frames compatible with cockpit replacement

Frames that accept a standard 1.125" or 28.6 mm stem, or a specific stem with a 31.8 mm handlebar clamp, can be converted with a compatible base handlebar.

List of bicycles mentioned

• BMC Speedmachine
• Canyon Speedmax CF
• Cube Aerium C:68 Rim Brake
• Cube Aerium C:68X Disc Brake
• Cube Aerium C:68 TT
• Orro Venturi TT
• Quintana Roo equipped with an Aeria Ultimate or Wing20C+
• Scott Plasma 5 with upgrade to the Creston IC TT one-piece
• Wilier Supersonica
• Wilier Turbine
• Wilier Turbine SL

Canyon Speedmax CF

Restyled version from April 2024

All versions of the restyled model marketed in April 2024 are listed as compatible.

Electronic versions 2019-2023

The electronic models from this period feature the H30 handlebar.

Mechanical versions 2019-2023

Mechanically driven models require an upgrade to the base handlebar.

Incompatibilities

System A1

Older generations using A1 risers cannot receive ASC Pro brackets.

• Profile Design Aeria Evo
• Profile Design Aeria
• BMC TM01 with flat cockpit
• BMC TM01 with V-shaped cockpit
• Scott Plasma 5 TTV
• Parlee TTiR
• Round hangers with clip-on extensions
• Specific hangers not listed in lists A3 and A2

Technical specifications

Product

• Template: Profile Design ASC Pro
• Length: 350 mm
• Type: Integrated set of extensions and armrests
• Body length adjustment: no

Supports

• Mandatory compatibility: ASC Pro Brackets
• Available offset: 5 mm
• Available offset: 15 mm

System compatibility

• System A3: directly compatible
• System A2: compatible with A2-A3 adapter
• Height added by the adapter: 15 mm
• System A1: not compatible

Recommended use

• Triathlon
• Time trial
• Aerodynamic position with intermediate length
• Cyclists looking for 350mm extensions
• A3 compatible cockpits
• A2 cockpits equipped with an A2-A3 adapter

Why choose Profile Design ASC Pro 350 mm?

• Intermediate length of 350 mm
• integrated one-piece assembly
• Design developed for aerodynamics
• Comfort is advertised as comparable to a personalized solution
• Settings to optimize the position
• Supports available with two offsets
• Compatible with several A3 hangers
• Compatible with certain A2 handlebars after conversion
• Suitable for compatible triathlon and time trial bikes