SKU: 31784642408

Profile Design - Sonic Ergo 39a

Sale price$52.92 Regular price$58.80
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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13

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Description

Profile Design - Sonic Ergo 39aPROFILE 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

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
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: 31784642408

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4.1 ★★★★★
Based on 18 reviews
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Anonymous Jack
Los Angeles, US
★★★★★ 5
Adjustable Support for Side Sleeping
Size: Body(Pack of 1), Color: White
The pillow is long and full, filled with shredded memory foam, and the cover feels smooth with a sturdy zipper. When I adjusted the fill, the foam shifted easily and settled without clumping, which made it simple to fine-tune the firmness. I ordered this pillow for extra joint support. In use, it stayed in place overnight and kept my hips and shoulders better aligned, especially when sleeping on my side. Memory foam naturally contours to pressure, which helps with joint support, but it can also hold a bit of warmth after several hours. The washable cover came off cleanly and went back on without stretching. It performed consistently and felt comfortable for daily sleep, and the adjustable fill and stable support explain the positive overall evaluation. This is a long pillow and takes up a lot of space, but it's comfortable and durable and easy to use. (Review is for HOMELAB Adjustable Shredded Memory Foam Body Pillow, 20x54 Long Pillow for Back)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
B
Verified Purchase
bettyc
Lexington, US
★★★★★ 5
Worth every penny
Size: Body Pillow & Pillowcase, Color: White
This thing is awesome. The pillow case is super soft too. You do need to let it unfold and air it out a bit, it’s present but not overwhelming but I think that applies to similar products. I use it when I lounge in bed. I have a king-size bed. I put it under my knees when I lay down and lay back, propped up a bit to watch movies. It’s perfect.
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Reviewed in the United States on May 30, 2026
J
Verified Purchase
JanJ
Fort Morgan, US
★★★★★ 5
Better than snuggling a spouse.
Size: Body Pillow & Pillowcase, Color: White
This pillow is, can I say, 'dreamy?' It is so cushy and the cover is like buttery soft velvet. I was afraid it would be lumpy with the shredded foam filling, but it's not at all. It holds its shape and ensures a good nights' sleep. One thing, the box it came in said "Feather and Down," which almost made me send it back unopened, thinking they sent the wrong item. The pillow comes shrink-wrapped into an unbelievably small size, so there's little chance of getting it back in the box once opened. It does puff up to full size in just a matter of a couple minutes. Great purchase.
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Reviewed in the United States on February 26, 2026
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
Amazing pillow
Size: Body Pillow & Pillowcase, Color: White
Love this pillow! Best body pillow ever, and I have had a lot of them!
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Reviewed in the United States on March 9, 2026
J
Verified Purchase
JK
Cuba, US
★★★★★ 3
Too bulky
Size: Body Pillow & Pillowcase, Color: White
It is too big and not easy to squish or manipulate it to squish it into the shape you want it to fit to my body.
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Reviewed in the United States on June 10, 2026

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