A completely strapless, aero-optimised long top tube pack that integrates seamlessly on your bike to increase carry capacity for long, fast days in the saddle.
The Aero Bolt-On Long Top Tube Module is a performance-oriented solution for competitive gravel racers who need to carry a bit more on their bikes, while maintaining a clean, secure fit.
The module can be run in isolation or combined with the Aero Frame Module, to create a complete watt-saving system that also increases carry capacity.
For years we’ve helped riders go further, now we’re helping them to go faster. Learn how.
– Works with Frame Module to improve aerodynamics
– Transfer panel technology reduces drag
– Waterproof, zipped closure
– Ultralight Hexagrid construction
Materials & Technology
Product Information
Weight
– Top tube module – 120g
Total System Weight (incl. Frame Module)
– Aero System (Medium) – 325g
– Aero System (Large) – 355g
Storage Configuration
– Single main compartment
Closure System
– Full length waterproof zipper
Attachment System
– 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
Reinforced Structure
– Full-length internal carbon base plate ensures a rigid, strap-free fit to the top tube
– Internal HDPE thermoplastic frame
Waterproofing
– Seam Welded: bespoke materials and RF welding create watertight seams
Visibility
– Reflective graphics
Testing Data
Care & Maintenance
Climate Footprint
Raw Material Processing and Product Assembly are the most significant contributors to our products climate footprints.
Estimated Carbon Emissions For
Aero Bolt-On Long Top Tube Module

| You can find out more about CO2e estimates and how they are calculated here. |
Specifications
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.