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Profile Design has been engineering faster cockpits since 1988 — the brand that introduced one of the first commercially available aerobars and has spent nearly four decades refining the systems that triathletes and time trialists rely on to find speed at the front of the bike. When position determines the outcome, the equipment holding that position matters.

The RA Cycles Profile Design collection covers a complete cockpit setup: clip-on aerobars, carbon and aluminum aerobar extensions, TT base bars, integrated front hydration systems, rear-mount storage hydration, computer mounts, armrest kits, and the hardware that connects it all. Whether you’re configuring a race-legal triathlon position or optimizing a dedicated TT build, the range here covers every extension length, bottle placement, and fit adjustment you’ll need.
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About Profile Design

Founded in 1988 in the United States, Profile Design introduced one of the first commercially available aerobars and built the brand around a single idea: that the fastest riders are the ones with the most optimized position. The company has spent nearly four decades developing cockpit systems, hydration solutions, and accessories specifically for triathlon, time trial, and road racing — a focused lineup that reflects deep category expertise rather than a broad product sprawl. More at profile-design.com.

At RA Cycles, the Profile Design range centers on aerobars and their ecosystem. The ASC carbon extension series covers 340mm and 400mm reach options, with the 52 ASC adding a wider sweep profile for different fit requirements. Complete aerobar systems like the Supersonic Ergo+ 35 SLC include integrated armrests and a full bracket setup. Front hydration spans the HSA 800 EVO, HSF Aerodrink 880ml, and RZ3 aero frame systems; rear hydration comes via the RM-P2 and RM-L configurations. Computer mounts, riser kits, bracket kits, and armrest hardware let riders dial in every detail of the position.

Browse our full aerobars collection for clip-on options across brands, explore triathlon accessories for race-day hydration and nutrition, or start building a complete setup in our triathlon bikes collection.

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R&A Cycles - 50th Anniversary

50 YEARS AND COUNTING

From a Brooklyn storefront to flagships in Walnut Creek and Miami, from handwritten mail orders to a fully digital custom bike builder — RA Cycles has spent half a century doing one thing: serving riders who demand the best. That half-century belongs as much to you as it does to us. The riders who kept coming back, who sent their friends, who trusted us with bikes that matter — you're the reason we're still here. Here's to the next fifty.

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