Transforming Aerodynamics and Hydration: The Dual Bottle BTA and MonoCup System

Optimised aerodynamics and hydration: the MonoCup and Dual Bottle Mount in action.

At SlipStream 3D, our mission is to blend innovation with performance, delivering products that make cycling faster, more efficient, and more comfortable. Two standout products developed from this ethos are the Dual Bottle Between-the-Arms (BTA) Mount and the MonoCup System. These parts not only enhance aerodynamics but also address common issues faced by riders in long-distance and time trial cycling.

The MonoCup System: Stability Meets Efficiency

The MonoCup is a custom-designed, single-piece system that acts as both a forearm stabiliser and a windshield. This 240mm piece distributes the load through your forearms—not just your elbows—providing unmatched cockpit stability and locking you into an optimal position. It’s not just about staying secure; it’s about improving your overall control and efficiency on the bike.

Key benefits of the MonoCup System:

• Snug Fit for Enhanced Handling: Helps maintain a stable and aerodynamic position, particularly in time trial setups.

• Forearm Support: Reduces strain and fatigue by redistributing the pressure across a broader area.

• Windshield Effect: Its streamlined design acts as a barrier to airflow, improving aerodynamics and reducing drag.

The 240mm MonoCup provides unparalleled stability and doubles as an aerodynamic windshield.

The Dual Bottle BTA Mount: Hydration Without Compromise

Hydration is critical during any ride, but carrying bottles in traditional jersey pockets or on the frame can create airflow disruptions and increase drag. Enter the Dual Bottle BTA Mount—a game-changer for accessibility and aerodynamics. Positioned between your arms and under your chest, this system fills the gap, directing airflow more efficiently and minimising turbulence.

Key benefits of the Dual Bottle Mount:

• Improved Aerodynamics: Eliminates the open gap between your arms, reducing drag by smoothing airflow across the bike.

• Easy Access Hydration: Keeps bottles within arm’s reach, so you can hydrate without breaking your aero position.

• Extra Storage for Nutrition: Accommodates additional nutrition, perfect for long rides or races.

The Dual Bottle Mount fills the gap, improving aerodynamics and providing easy hydration access.

A Side-by-Side Comparison: Before and After

Take a look at the visual comparison below to see the transformation:

Before:

• Cranked head position and tense upper body from an unstable cockpit.

• Airflow disruption between the arms and into the chest cavity.

• Hard-to-access bottles stored in jersey pockets.

After:

• Relaxed upper body and neutral head position with the MonoCup System stabilising the cockpit.

• Smooth airflow, thanks to the closed arm gap and Dual Bottle Mount.

• Easy hydration access, without compromising aero positioning.

These improvements not only enhance comfort and performance but also ensure you stay competitive on race day.

Before (top) and after (bottom) implementing the MonoCup and Dual Bottle Mount system.