Sonic ergo 4545a

319 Reviews

The aerodynamically optimized Sonic/Ergo 4525a minimizes frontal area, significantly reducing drag. Despite its sleek design, it offers a broad fit range, ideal for achieving the fastest, most comfortable riding position.

UNRIVALED ADJUSTABILITY 

Over 100 distinct armrest positions and 1500 possible configurations with risers.

ENHANCES YOUR SPEED AND EFFICIENCY ON THE ROAD

Ergonomic Armrest for superior comfort

STURDY AND Ultra-Light Build at Just 559 Grams Total

Versatile Extension Options

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$197.90

$219.90

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A multi-sport icon with simple, fine-tune flexibility that makes them the gold standard for bike fitters worldwide.

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Why Sonic Ergo 4525a is Your Ultimate Riding Companion

Tailored Fit for Every Cyclist

Maximize your performance with the Sonic Ergo 4525a's industry-leading 1500 configurations. Precision-tuned armrests and risers adapt to your unique style, ensuring peak comfort and optimal aerodynamics throughout your ride. 

Slice Through the Air

The Sonic Ergo 4525a is engineered to reduce aerodynamic drag effectively. This means cyclists can achieve higher speeds with less effort, making this aerobar an ideal choice for both time-trialists and triathletes looking to shave seconds off their times.

Ergonomic Comfort

 Long rides demand comfort, and the Ergo armrest is a game-changer. Its supportive curve design is not just about improving fit range; it's about cradling the rider's arms to reduce pressure points, minimize fatigue, and allow for sustained performance over extended periods. 

US

PROFILE DESIGN

THEM


MAXIMUM ADJUSTABILITY

ERGONOMIC ARMREST WITH SUPPORTIVE CURVE
OPTIMIZED AERODYNAMIC EFFICIENCY 

Dual-angle with lateral shift EXTENSION OPTION

559 GRAM WEIGHT

INSTALL OUR AEROBARS IN UNDER 10 MINUTES

SONIC ERGO 4525A 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 -2.5mm 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)

COLOUR 

MATTE BLACK

WEIGHT 
559 GRAMS
TORQUE SETTINGS (ALL BOLTS ARE M6)
BAR CLAMP

6NM

EXTENSION CLAMP
6NM

ARMREST BOLTS

4.7NM  

WEIGHT
BRACKET

234 GRAMS

ARMREST
130 GRAMS

EXTENSIONS

195 GRAMS 

TOTAL

559 GRAMS  

Why CYCLISTS love profile design

4.8/5 rating

  • A quality aero bar, very adjustable

    I originally bought a cheap set of Chinese made carbon fiber aero bars. They actually looked good and weighed nothing. But..... the bars were too short, they had no adjustment, the mounting bracket looked flimsy, the arm pads were thin and uncomfortable, etc, etc. So, I looked for a better set. I didn't want to spend a lot money so I did some research and bought these. I'm glad that I did!

    Randall P.

    Verified Buyer

  •  You can't go wrong

    Comfortable. Easy to install. A whole different effort on the bike. You'll love those.

    MR G.

    Verified Buyer

  • Great TT substitute

    I've done 4 olympic triathlons, a half ironman, and 6 or so century rides with these bars on my specialized road bike. I don't feel any sort of disadvantage against TT cyclists, I'm able to get in aero position very easily with the bars. I can customize the position if I want a higher position or a tighter hold. Can hand tighten with an allen set, and comes off quickly/easily for any drafting races.

    NOLAN P.

    Verified Buyer

  • Adjustable and Comfortable

    I was looking for a clip-on aero bar solution that provided for adjustability, as well as comfort for both short and long-course triathlon. These bars delivered and are very comfortable on short and long rides. The ability to alter your setup both in reach, height, and arm pad location make these a no-brainer for anyone looking for a clip-on solution for racing, training, or just a more comfortable commute!

    kent g.

    Verified Buyer

  • Reliable

    Pads are comfortable and stay securely in place. The bars are sturdy and reliable. They can be turned onwards/outwards, length fairly adjustable. I wouldn't recommend for very tall people/long arms. I'm 5'7". Read the length. Great product. Mine was missing the pads in error, but I emailed them. They responded quickly and got the pads a couple of days later. Very happy

    CAROLINA A.

    Verified Buyer

  • Great improvement

    I really like the latest generation of these. There isn’t a real weight difference between carbon and alloy for the money. I love that the poles have a inward bend, I like to have my hands get really close in the middle.

    J Z.

    Verified Buyer

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