SKU: 57919877096

Sonic Ergo 39a Aerobar

Sale price$179.09 Regular price$198.99
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

Sonic Ergo 39a AerobarThe 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 optimizing their position for both speed and comfort. The 39A is one of the newest versions of our reliable aluminum extension range FEATURES: Performance: The Sonic Ergo is designed to present minimal frontal area to create as little aerodynamic drag as

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 optimizing their position for both speed and comfort.

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

FEATURES:

  • 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.
  • 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.
  • Fit:
    • 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)

SPECS:

  • Bracket: Sonic
  • Clamp Diameter: 31.8mm or (26.0 with Shim Kit - Shim Kit is sold separately)
  • 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
  • Color: Anodized Matte Black
  • Weight: 564g
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57919877096

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TW
Birmingham, US
★★★★★ 1
Terrible Quality, fell apart
Very poor quality. Came apart after one washing. Unraveled. Would not purchase again. Wish I had not purchases the first time.
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Reviewed in the United States on January 5, 2026
K
Verified Purchase
Kindle Customer
Lexington, US
★★★★★ 3
Socks
They fit okay and they're comfortable but the only problem I've been seeing is that they're starting to unravel at the toe end
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Reviewed in the United States on September 1, 2025
B
Verified Purchase
Big ken
Cuba, US
★★★★★ 2
Longevity of product
Tends to start falling apart after one or two washings
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Reviewed in the United States on December 18, 2025
R
Rhonda G. Fuller
Cuba, US
★★★★★ 4
My New Toeless Socks
These toeless cotton socks have been my go to socks, I have had twelve surgeries on my foot due to a car accident on my right foot. I cannot wear close toe socks as the cause swelling and pain, now I can wear these soft toeless socks with no pain or swelling. I love I have the option of three different colors as well.
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Reviewed in the United States on November 29, 2025
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Verified Purchase
Lynne F.
Dallas, US
★★★★★ 3
Too small and tight
One size fits all is too small for what we needed
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Reviewed in the United States on September 6, 2025

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