Apidura Aero Bolt-On Long Top Tube Module

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

Check out our step-by-step Fitting Guide for complete installation instructions.

Materials & Technology

HexagridAn ultralight, high strength nylon grid, laminated with TPU to create a minimalist yet structured material. PFAs and PFC-free. HDPEHigh strength and rigidity reinforcement boarding with good shape recall to avoid deformation. Aero OptimisedActive improvement of the aerodynamic performance of the bike and rider. UltralightMinimal design & lightweight materials for optimal weight-performance.

Product Information

Weight
– Top tube module – 120g

Total System Weight (incl. Frame Module)
– Aero System (Medium) – 325g
– Aero System (Large) – 355g

Capacity
– Top tube module – 0.8L

Storage Configuration
– Single main compartment

Closure System
– Full length waterproof zipper

Attachment System – Two M5 hex-headed bolts anchor module to top tube mounts – Centre channel in base flexes around mounting points, pulling module flush against top tube for a gap-free fit – Elastic tensioner contours to the stem and draws Transfer Panels inwards for gap-free, aerodynamic efficiency

Reinforced Structure
– Full-length carbon fibre reinforcement 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