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. Learn how.

Features:

• Works with Frame Module to improve aerodynamics
  
• Transfer panel technology reduces drag
  
• One-handed fast entry to top tube module
  
• Ultralight Hexagrid construction

Materials & Technology:

Hexagrid

• An ultralight, high strength nylon grid, laminated with TPU to create a minimalist yet structured material. PFAs and PFC-free

HDPE

• High strength and rigidity reinforcement boarding with good shape recall to avoid deformation

Aero Optimised

• Active improvement of the aerodynamic performance of the bike and rider

Ultralight

• Minimal design & lightweight materials for optimal weight-performance

Specifications:

Weight: Top tube module – 95g

Total System Weight (incl. Frame Module)

Aero System (Medium) – 300g
Aero System (Large) – 330g

Capacity: Top tube module – 0.4 Litre

Storage Configuration

• Single main compartment

Closure System

• Fast entry magnetic closure

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
  
• Please note: whilst materials are fully waterproof, the magnetic closure is not

Visibility

• Reflective graphics

Care & Maintenance:

Spot clean only

• Stains can be spot treated with concentrated dishwashing liquid. Abrasion is not recommended