Apidura Aero Bolt On Top Tube Module/Bag

A strapless, aero-optimised top tube pack that integrates seamlessly on your bike to make you faster.

The Aero Bolt-On Top Tube Module is a performance-oriented solution for competitive gravel racers, developed through rigorous Computational Fluid Dynamics (CFD) analysis to smooth airflow behind the stem and improve aerodynamic efficiency.

Combining with the Aero Frame Module creates an average 5 watt saving at race speed, validated through wind tunnel testing and race-proven at the highest level, showing a benefit on every bike we’ve tested. View the data

For years we’ve helped riders go further, now we’re helping them to go faster.

• Works with Frame Module to improve aerodynamics
• Two M5 hex-headed bolts anchor module to top tube mounts ensuring a gap-free fit
• Elastic tensioner contours to the stem and draws Transfer Panels inwards for a flush fit and aerodynamic efficiency
• Transfer Panels and Skirt for close integration
• Full-length internal carbon base plate ensures a rigid, strap-free fit to the top tube
• Internal HDPE thermoplastic frame
• One-handed fast entry magnetic closure
• Ultralight Hexagrid construction
• Weight: 95g

SIZING

64 mm bolt spacing and 5 cm of fore-aft adjustment ensures precise alignment between the module and rear of the stem, essential for maximising aerodynamic performance.

AERO OPTIMISED

Developed through extensive CFD analysis and wind tunnel testing, the shape of the Aero System smooths airflow around the bike, reducing drag and making the rider faster for the same effort. The Aero System has shown a benefit on every bike we’ve tested.

The Aero System was designed foremost as an aerodynamic system. Whether run full or empty, it makes your bike faster.

INTEGRATED DESIGN

When the system is mounted, elements such as Transfer Panels, Skirt and Tension Bands work together to eliminate gaps between the frame and stem, passing air smoothly from the front of the bike across the modules.