The Profile Design Sonic/Ergo/52a uses the lightweight Sonic bracket with Ergo armrests and A-Series 52° extensions — the most upright angle in the Sonic range — ideal for riders who prioritise shoulder comfort over maximum aerodynamic aggression, or who are newer to the aero position.

• Sonic bracket offers an extensive fit range with minimal frontal area, keeping the cockpit clean and aerodynamic
• Ergo armrests aid rider comfort during sustained aero efforts, reducing pressure points
• A-Series 52° extensions allow fine-tuning of wrist angle independently of other fit adjustments
• Aero-shaped extension section maintains the same 87mm rise as previous alloy models
• New ergonomic end caps improve hand grip comfort in the TT position
• 22.2mm extension clamp diameter with 7.5mm offset, compatible with standard aerobar brackets

At 52°, the A-Series extension puts the wrists in their most natural, upright position — reducing shoulder tension for riders who are still developing their aero fit or spending extended time on course. The Sonic bracket's low-profile design keeps the frontal area to a minimum despite the more relaxed arm angle. A good choice for long-course triathlon and sportive riders who want to run aerobars without sacrificing upper-body comfort.

Compatible with 31.8mm handlebars. Extension clamp diameter 22.2mm. Pairs with Profile Design Plus Series armrests for further adjustment options.