transactions can take up to 30 seconds to complete.
- Home >
- Bags And Racks >
- Frame Bags >
- Aero System Modular Top Tube Pack And Frame Bag












A modular frame and top tube system that enhances aerodynamic performance, integrating with your bike to make you faster.
The Aero System is a performance-oriented solution for competitive gravel racers, developed through rigorous Computational Fluid Dynamics (CFD) analysis. With an average 5 watt saving at race speed, it’s wind tunnel tested and race-proven at the highest level, showing a benefit on every bike we’ve tested. View the data.
The Aero System was designed with the primary purpose of improving aerodynamic performance, regardless of what you decide to pack. For years we’ve helped riders go further, now we’re helping them to go faster. Learn how.
- Modules work together to improve aerodynamics
- Transfer panel technology reduces drag
- One-handed fast entry to top tube module
- Soft interior base protects contents
- Ultralight Hexagrid construction
Product Information
- Aero Benefit: 5 watt average saving – view data.
- Weight: Aero System (S/M) – 305g, Aero System (L/XL) – 335g
- Storage Configuration: Single main compartment on top tube and frame modules, Optional internal lash loop
- Closure System: Top tube module: fast entry magnetic closure, Frame module: zip closure
- Attachment System: 3 Hypalon load straps, silicone backed to increase grip, Velcro transfer panel attaches to downtube, Rubber tension bands attach to head tube
- Reinforced Structure: Internal HDPE thermoplastic frame in both modules
- Sizing: Systems should be sized based on frame size, see our specifications, printable templates and sizing tool to find a perfect fit.
The Aero System is designed to integrate with your bike to deliver an aerodynamic benefit. As such, the available sizes relate not to the capacity, but to the size of bike that is best suited to deliver this benefit. As a rough guide, the L/XL size is best suited to bikes sized 56-58cm and above. The S/M is best matched to bikes from 52-56cm.
A modular frame and top tube system that enhances aerodynamic performance, integrating with your bike to make you faster.
The Aero System is a performance-oriented solution for competitive gravel racers, developed through rigorous Computational Fluid Dynamics (CFD) analysis. With an average 5 watt saving at race speed, it’s wind tunnel tested and race-proven at the highest level, showing a benefit on every bike we’ve tested. View the data.
The Aero System was designed with the primary purpose of improving aerodynamic performance, regardless of what you decide to pack. For years we’ve helped riders go further, now we’re helping them to go faster. Learn how.
- Modules work together to improve aerodynamics
- Transfer panel technology reduces drag
- One-handed fast entry to top tube module
- Soft interior base protects contents
- Ultralight Hexagrid construction
Product Information
- Aero Benefit: 5 watt average saving – view data.
- Weight: Aero System (S/M) – 305g, Aero System (L/XL) – 335g
- Storage Configuration: Single main compartment on top tube and frame modules, Optional internal lash loop
- Closure System: Top tube module: fast entry magnetic closure, Frame module: zip closure
- Attachment System: 3 Hypalon load straps, silicone backed to increase grip, Velcro transfer panel attaches to downtube, Rubber tension bands attach to head tube
- Reinforced Structure: Internal HDPE thermoplastic frame in both modules
- Sizing: Systems should be sized based on frame size, see our specifications, printable templates and sizing tool to find a perfect fit.
The Aero System is designed to integrate with your bike to deliver an aerodynamic benefit. As such, the available sizes relate not to the capacity, but to the size of bike that is best suited to deliver this benefit. As a rough guide, the L/XL size is best suited to bikes sized 56-58cm and above. The S/M is best matched to bikes from 52-56cm.