Supersonic Ergo+ 45 SLC Aerobar

What Our Gearhead® Experts Are Saying:

"I recommend this to riders who want absolute control over their aero position. The fit adjustability is unmatched, and the SLC extensions feel stiff without adding bulk. It’s ideal for dialing in stack, reach, and pad width with true race-level precision."

The Supersonic Ergo+ 45 SLC Aerobar represents one of the most adaptable clip-on aero systems available for triathlon and time trial platforms. At its core is the Supersonic bracket, engineered with an internal wedge clamp mechanism that secures the extensions cleanly while expanding fit range beyond traditional designs. The result is simplified adjustment, improved clamping reliability, and a refined aerodynamic profile at the cockpit.

Fit optimization is where this system excels. The Ergo+ armrests extend the popular Ergo platform by 40mm, increasing forearm support and stability under load. With armrest width adjustable from 124mm to 290mm in 18.5mm steps, offset ranging from -85mm to -17.5mm, and stack beginning at 58.5mm—expandable to 138.5mm via Universal Riser Kits—the bar offers 80 discrete armrest positions alone. When riser combinations are factored in, riders can achieve up to 1440 configurations, enabling precise integration with modern tri and TT frames.

The 4525 SLC carbon extensions feature a dual-angle profile—45° lower and 25° upper—supporting both low, compact setups and high-hands aerodynamic positions. A 7.5mm lateral shift per side allows refined hand placement without excessive tilt that could interfere with shifters. Measuring 400mm and cut-to-size, the 22.2mm clamping diameter supports internal Di2 routing and rear-exit cable management for a clean build.

With a total system weight of 627g, this aerobar balances stiffness, configurability, and weight savings—making it a top-tier solution for athletes focused on maximizing aerodynamic efficiency and biomechanical precision on race day.