Aerodynamic 55T chainring for time trials & triathlon.

The FSA Aero TT chainring with 55 teeth was specially developed for aerodynamic road bike, time trial, and triathlon setups. Its enclosed aero design reduces air turbulence and ensures optimized performance at high speeds.

With a 130 mm bolt circle diameter (BCD) and 5-arm interface, the chainring is compatible with corresponding road bike cranksets. Designed for 2x11-speed drivetrains, it provides precise power transfer in competition. This outer chainring is ideal for pairing with a 42-tooth inner chainring.

Highlights:

• 55 teeth: ideal for high speeds.
• Aero design: optimized for TT & triathlon.
• 130 mm BCD: classic road bike standard.
• 5-arm interface: compatible with common cranksets.
• 2x11-speed: for modern drivetrain systems.

Technical specifications:

• Manufacturer: FSA
• Model: Aero TT
• Teeth: 55T
• Bolt circle: 130 mm (BCD)
• Interface: 5-arm
• Drivetrain: 2x11-speed
• Application: time trial, triathlon, aero road bike

Scope of delivery:

• 1x FSA Aero TT chainring 55T
• Note: workshop packaging (without outer packaging)

Manufacturer part no.: 36800008008010 | EAN: 4713170250248

“Maximum aerodynamics for personal bests - the 55T Aero chainring from FSA for uncompromising speed setups.”