The UnderCup BTA System: Aerodynamics and Hydration Perfected
At SlipStream 3D, we understand the critical balance between performance and practicality for cyclists. That’s why we’ve designed the UnderCup BTA System—a solution that optimises hydration accessibility while enhancing aerodynamics. Whether you're training for your next triathlon or racing for a new personal best, this system is designed to give you a competitive edge.
What Makes the UnderCup BTA System Unique?
The UnderCup BTA (Between-the-Arms) System is designed to seamlessly integrate with your bike's arm cups, allowing for optimal hydration placement. This innovative positioning reduces drag, maximises space, and ensures easy access to hydration during your ride.
Key Features and Benefits
Dual Bottle Capability
The UnderCup BTA System allows you to mount two bottles between the arms, ensuring you stay hydrated during even the longest rides. This eliminates the need to reach back for bottles stored in traditional locations, keeping your aero position intact.Improved Aerodynamics
By positioning the bottles in between the arms, the system fills the gap between your arms, reducing airflow turbulence. This streamlined setup minimises drag and improves efficiency.Customised Stack Heights
The System offers a wide range of adjustable stack heights to accommodate riders of all shapes and sizes. This flexibility ensures you can find the perfect fit for your body position and riding style.Stainless Steel Hardware
All mounting hardware included is made of durable stainless steel, ensuring longevity and reliability even in tough conditions.Secure and Seamless Integration
The system mounts directly under the arm cup wedges, creating a clean and professional look that’s both functional and aesthetically pleasing.
The dual bottle setup fills the gap between the arms, reducing airflow turbulence while keeping hydration accessible
Fully Customisable for Any Cockpit Setup
The UnderCup BTA System is designed to be fully adaptable, making it suitable for nearly any bike cockpit with arm cups. Whether you ride a stock setup or a fully customised triathlon rig, the system can be tailored to fit your specific arm cup dimensions and positioning needs.
Universal Fit: Designed to mount seamlessly under most arm cups.
Adjustable Stack Heights: Customisable from 20mm to 130mm, with the option to add extra height if required.
Tailored for You: Each system can be modified for optimal positioning, ensuring the perfect balance of aerodynamics, hydration access, and comfort.
This level of flexibility makes the UnderCup BTA System ideal for a wide range of riders, from triathletes to time trial racers, looking to fine-tune their setups for both speed and performance
Designed with Cyclists in Mind
The UnderCup BTA System was created for cyclists who demand more from their equipment. It’s not just about aerodynamics or hydration—it’s about merging these two aspects into a single, efficient solution that makes every ride better. The system also allows for extra nutrition storage, making it ideal for long-distance events or hot conditions where hydration is key.
Who Is It For?
Whether you’re riding a Giant Trinity, Canyon Speedmax, BMC Timemachine or another triathlon bike, the UnderCup BTA System is designed to fit a variety of setups. Its versatility and compatibility make it the go-to choice for any rider looking to enhance their performance.
See the UnderCup BTA System in Action
Here’s a closer look at the UnderCup BTA System, demonstrating its seamless integration and sleek design:
Why Choose the UnderCup BTA System?
Cyclists who’ve upgraded to the UnderCup BTA System report noticeable improvements in:
Ride Efficiency: Reduced drag and turbulence for faster rides.
Convenience: Easy access to hydration without compromising aero position.
Confidence: A secure, stable system that integrates seamlessly with their bike.
Get Your UnderCup BTA System Today
Ready to take your performance to the next level? Visit our shop here to order your UnderCup BTA System and experience the difference it can make in your rides.
Looking for a Custom BTA Solution?
Need something tailored specifically to your unique setup? We also offer fully custom BTA systems designed to fit your exact cockpit dimensions, hydration preferences, and racing needs. Submit your details through our Custom BTA System Form and let SlipStream 3D create the perfect solution for your next race.
Tom Page using the SlipStream 3D UnderCup BTA System during the 2024 70.3 Ironman World Championship, where he secured 2nd place in his age group.