Subsonic Ergo 39a Aerobar

Subsonic Ergo 39a Aerobar

£189.99
/
Tax included. Shipping calculated at checkout.
  • In stock, ready to ship
  • Backordered, shipping soon

Shipping policy

FREE Standard UK Delivery over £50

• FREE delivery applies to standard orders of £50 and over, delivered to UK mainland addresses.
• Standard delivery is £5.99 for orders under £50.
• Estimated delivery date for standard delivery is 2-4 working days.
• Exceptions apply to items being delivered to non-UK mainland locations and remote areas.
• Deliveries take place between 8am and 8pm, Monday to Saturday.

Standard Northern Ireland Delivery - £5.99

• We are unable to offer our normal FREE delivery over £50 to Northern Ireland. Standard delivery will incur a £5.99 delivery charge.
• Next day delivery is unavailable to Northern Ireland.

Delivery to Remote Areas - Standard

Unfortunately, if you live in a Northern Ireland, highlands, island or rural postcode, due to distance delivery may take longer than 7 working days and incur additional charges, however we will do our very best to get your order to you as quickly as possible. We are also unable to offer next day delivery to these locations:

Channel Islands

Standard delivery will incur a £9.99 delivery charge.

Estimated delivery date for standard delivery is 3-17 working days.



Isle of Man
Standard delivery will incur a £9.99 delivery charge.

Estimated delivery date for standard delivery is 3-17 working days.


Republic Of Ireland
Temporarily Unavailable

Due to the UK leaving the EU, we unfortunately cannot accept orders to Republic Of Ireland at the moment. New rules in terms of customs will be put into place shortly and we are working hard with our shipping partners to find the best possible solution for us to deliver your orders. Please don’t hesitate to contact customercare@madison.co.uk if you have any questions.

We are currently experiencing delays with our Standard delivery services, especially those to offshore destinations (such as Jersey, Guernsey) if you have any queries, please contact customercare@madison.co.uk

 

 

 

Refund policy

Returns & Refunds – Profile Design UK

Need to return something? No problem. Here’s everything you need to know.

✅ Key Info at a Glance

  • You have 30 days from delivery or collection to return an item for a refund.

  • Refunds go back to your original payment method and can take up to 10 working days to appear.

  • Return shipping charges apply (details below).

🔁 How to Return Your Item(s)

  1. Repackage the item(s) securely with original labels and packaging intact.

  2. If your parcel is under 10kg and doesn’t exceed 50 x 50 x 60 cm, apply the pre-paid returns label (DPD or Royal Mail) to the package.

🧾 Don’t forget to keep your proof of postage until your return is confirmed.

🚚 Larger or Heavier Items?

  • Unused bulky or high-value items: We can arrange return shipping using our couriers.

    • £15 for bulky items

  • Contact us to book a collection.

⚠️ Important Reminders

  • Returned items must be unused, in original condition and packaging, with labels attached.

  • Items returned in an unsuitable condition may be sent back to you.

  • Initial shipping fees are non-refundable.

  • In the case of partial returns, we reserve the right to void any promotional discounts.

🚫 Product Exclusions

Some items can’t be returned unless faulty or incorrectly supplied:

  • Gift vouchers (if used or registered)

🔄 Exchanges

We don’t offer direct exchanges.
If you need a different size, colour or model, please place a new order and return the original item for a refund.

🔍 What if Something’s Wrong?

🛠️ Faulty or Incorrect Items

Received the wrong item or something’s faulty?
Contact us within 7 days of delivery so we can fix the issue quickly.

💷 Refund Issues

If you think your refund amount is incorrect, please contact our customer service team with your order number and details.

📦 Haven’t Heard About Your Return?

It may take up to 10 working days from the day after you send your return for it to be processed.
We’ll email you once it's been received and refunded.
If that time has passed, contact us with your proof of postage.

📬 Need More Help?

This Returns Policy does not affect your statutory rights.

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Description

The Subsonic/Ergo/39a aerobar combines the low stack Subsonic bracket with the arm hugging Race armrest to offer an industry leading fit range oriented towards low, narrow positions. The 39a extension offers a comfortable 39 degree angle with a 87mm rise. This is the only low stack clip on in the market that maintains the pad to grip angle as the bar is stacked up

Subsonic not just another aerobar bracket. It brings our next generation fit range to a low stack bracket design. This allows the bar to use our riser kits to increase the stack without changing the relationship between the armrest and the grips. The Ergo armrest has been designed to tightly cup the riders arms – facilitating a narrow position and increasing control at speed.

Performance

The Subsonic/Ergo is designed to achieve a lower stack height than standard aerobars, without the added frontal area of a below the basebar extension clamping system. This improves aerodynamics and the fit range.

Fit Data

  • Armrest offset: -85mm to -17.5mm in 7.5mm steps
  • Armrest Width: 142mm to 272mm in 18.5mm steps (with Extensions at 100mm)
  • Armrest Stack: The minimum is 40mm and the bracket is compatible with our existing risers which add up to 70mm of stack in 5mm increments.

The extension rotation can be easily adjusted using the shaft bolt. There is a 40mm range of extension length adjustment once the extensions have been cut.

There are 80 distinct position options achievable just by moving the armrests. Combine that with the risers and this bar offers 1200 possible configurations. As a clip on bar it is also possible to adjust the extension width and tilt easily. This is the most adjustable low stack clip-on on the market.

Origin Story

After we released the Supersonic (J5) as a premium bracket with market leading fit options and versatility we wanted to bring the same kind of options to the rest of our range of brackets and thus aerobars.

Where our supersonic and Sonic brackets have a minimum stack of around 60mm, like most of the popular aerobars - we wanted the Subsonic to offer a substantially lower position.  This helps the segment of the market who struggle to get into their ideal position with modern bike frames.  And it was vital the we include stack height adjustment without altering the pad grip relationship - so our riders have the ability to fine-tune every aspect of their setup.

The Ergo armrest shares the flippable design of the rest of our new generation armrests. By swapping sides or rotating the armrests smaller increments of movement are achieved – making it simple to fine tune a riders position or match the position from their previous aerobar or bike.

Who is it for

This bar is perfect for riders who wish to achieve lower positions than are possible with standard aerobar designs. Unlike other low stack bars it allows fine-tuning of the stack height so the rider is not limited to only one armpad height. With the Race armrests fitted it is tailored towards riders who intend to be low and narrow to punch the smallest possible hole through the wind.

Tech Specs
  • Bracket: Subsonic
  • Clamp Diameter: 31.8mm or (26.0 with Shim Kit - Shim Kit is sold separately)
  • Armrest: Ergo / 10mm Pads
  • Extension Length: 340mm
  • Width: 142mm to 272mm
  • Weight: 590g
  • Color: Black
Tech Guide

Torque settings

  • Bar Clamp: 6Nm
  • Extension Clamp: 5Nm
  • Armrest Bolts: 4.7Nm

Weight

  • Bracket: 304g
  • Armrest: 148g
  • Extensions: 186g
  • Total: 590g
Manual

Subsonic Race 39a Installation Instructions

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