Profile Design - Sonic Ergo 39a

PROFILE DESIGN - SONIC ERGO 39A

REPLACES THE 35a & 43a

The Sonic bracket offers an extensive fit range, low weight and easy adjustment along with minimal frontal area. Combining this with the Ergo armrest creates an aerobar that will aid most riders in optimising their position for both speed and comfort.

The 39A is one of the newest versions of our reliable aluminium extension range.

Performance

The Sonic/Ergo is designed to present minimal frontal area to create as little aerodynamic drag as possible. The main purpose of an aerobar is, of course, to get the rider into a fast position despite a fairly minimalist appearance the Sonic/Ergo offers a comprehensive fit range for exactly this purpose.

Fit Data

The 39a extensions have a 39° for the grip . The rider can choose whether to hold high for the shrugged position or low for a more open, head up position.

There are 100 distinct position options achievable just by moving the armrests. Combine that with the risers and this bar offers 1500 possible configurations. As a clip on bar it is also possible to adjust the extension width and tilt easily. This is the most adjustable clip on bar on the market (and in history).

• Armrest Offset: -70mm to -17.5mm in 7.5mm steps
• Armrest Width: 124mm to 290mm in 18.5mm steps (With Extensions at 100mm)
• Armrest Stack:  60mm (no riser kit) to 130mm in 5mm increments (With aftermarket Riser Kit)

Tech Specs:

• Bracket: Sonic
• Clamp Diameter: 31.8mm (26.0 w/Shims)
• Armrest:  Ergo / 10mm Pads
• Armrest Width: 124mm to 290mm in 18.5mm steps (with Extensions at 100mm)
• Armrest Offset: -70mm to -17.5mm in 7.5mm steps
• Armrest Stack: The minimum is 60mm and the bracket is compatible with our existing risers which add up to 130mm stack with (70mm of spacers added)
• Construction: 6061-T6 aluminum, pre-drilled for bar-end shifter cable routing
• Extension Length: 400mm
• Extension Angle: 39 Degrees
• Extension Rise: 87mm (bottom to top)
• Extension Offset: 15mm total
• Outer Diameter: 22.2mm
• Inner Diameter: 19.2mm
• Shifter Compatibility: Electronic or Mechanical
• Weight: 564g

Velo City does not carry all goods available for purchase online. Time for collection may vary depending if the products are required to be sourced from off-site warehouses. The process can take a few days (normally anywhere between 2-10 working days). If you are worried about a delay please feel free to email or call us.

Free Shipping for orders over $150. *this excludes bikes, bulky items & rural deliveries. Items classified as bulky items or a rural delivery do incur a fee, as specified in the shipping section at checkout.

Due to international policy, all bikes purchased online must be shipped to an approved bike store for professional assembly by a qualified bike mechanic—they cannot be delivered directly to your address.

If you're interested in a bike, contact us and we'll help arrange delivery to a participating store near you.

Please note that delivery to another store will incur freight and assembly charges. Any applicable costs will be confirmed with you by our online team before your order is shipped.

All products are covered by manufacturers warranty. If you do need to send items back to us please make sure that you have read our returns policy.