SlipStream 3D
Innovative 3D-Printed Cycling Components, Engineered for Performance, Precision, and Functionality.
Between The Arms (BTA)
Best Sellers
The SlipStream 3D UnderCup Between-the-Arms (BTA) Hydration System for the Giant Trinity Disc 2025 is engineered to position one or two hydration bottles neatly beneath your arm cups, creating a clean, integrated cockpit while keeping hydration easily accessible during training and racing.
Designed specifically for the Giant Trinity Disc 2025, the BTA System provides a rigid, secure mounting platform that eliminates bottle movement, even over rough roads. With adjustable stack height and multiple bottle positions, it can be tailored to suit your riding position and hydration preferences.
Whether you're racing a sprint triathlon, 70.3, or Ironman, the SlipStream 3D UnderCup BTA Hydration System provides a stable, aerodynamic solution that keeps hydration within easy reach while maintaining a clean, integrated cockpit.
Giant Trinity Disc 2025 UnderCup BTA Features
Designed for the Giant Trinity Disc 2025 (Triathlon Bike)
Purpose-built to integrate seamlessly with the Giant Trinity Disc 2025 cockpit, delivering a secure, factory-like fit.Dual Bottle Compatible
Supports one or two standard cycling bottle cages, giving you the flexibility to carry additional hydration for training or racing. All required mounting hardware is included. Bottle cages are sold separately.Aerodynamic Design
Mounts bottles neatly beneath your forearms to reduce frontal drag while keeping hydration within easy reach.Adjustable Stack Height
Supplied with three 10 mm spacers, providing up to 30 mm of stack adjustment to fine-tune your cockpit position. Additional spacers are available separately if more height is required.
Every rider's cockpit is unique.
If your setup isn't listed, we can design a custom UnderCup BTA System specifically for your bike. Simply visit our Custom Design page, complete the enquiry form, and we'll work with you to create the perfect solution.
⬇️ See the Additional Information section below for compatibility, sizing and setup instructions.
The SlipStream 3D UnderCup Between-the-Arms (BTA) Hydration System for the Sync Ergonomics AB02 Aerobar is engineered to position one or two hydration bottles neatly beneath your arm cups, creating a clean, integrated cockpit while keeping hydration easily accessible during training and racing.
Designed specifically for the Sync Ergonomics AB02, the BTA System provides a rigid, secure mounting platform that eliminates bottle movement, even over rough roads. With adjustable stack height and multiple bottle positions, it can be tailored to suit your riding position and hydration preferences.
Whether you're racing a sprint triathlon, 70.3, or Ironman, the SlipStream 3D UnderCup BTA Hydration System provides a stable, aerodynamic solution that keeps hydration within easy reach while maintaining a clean, integrated cockpit.
Sync Ergonomics AB02 UnderCup BTA Features
Designed for the Sync Ergonomics AB02 (Aerobars)
Purpose-built to integrate seamlessly with the Sync Ergonomics AB02 cockpit, delivering a secure, factory-like fit.Dual Bottle Compatible
Supports one or two standard cycling bottle cages, giving you the flexibility to carry additional hydration for training or racing. All required mounting hardware is included. Bottle cages are sold separately.Aerodynamic Design
Mounts bottles neatly beneath your forearms to reduce frontal drag while keeping hydration within easy reach.Adjustable Stack Height
Supplied with three 10 mm spacers, providing up to 30 mm of stack adjustment to fine-tune your cockpit position. Additional spacers are available separately if more height is required.
Every rider's cockpit is unique.
If your setup isn't listed, we can design a custom UnderCup BTA System specifically for your bike. Simply visit our Custom Design page, complete the enquiry form, and we'll work with you to create the perfect solution.
⬇️ See the Additional Information section below for compatibility, sizing and setup instructions.
The Canyon Speedmax Mono-Extension BTA is a versatile hydration system designed specifically for the Canyon Speedmax's mono-extension setup. With adjustable height and dual bottle compatibility, this mount seamlessly integrates into your existing configuration for enhanced performance and convenience.
Key Features
Adjustable Height: Fine-tune the height for optimal positioning to match your aerodynamic and ergonomic needs.
Dual Bottle Capability: Supports two bottles, providing maximum hydration options for long rides or races.
Secure Mounting: Attaches directly to the existing Speedmax mono-extension, ensuring a stable and seamless fit.
Improved Straw Clip: Includes a straw clip that replaces the existing straw magnet, offering a more secure and reliable solution for straw placement.
Additional Notes
Updated Design: Please note that the design has been updated since the photos. Computer placement is no longer an issue, ensuring a more streamlined and efficient setup.
Behind The Saddle
(BTS)
Best Sellers
Engineered for the ISM 3.0 / 3.1 Saddle, this BTS system mounts securely to the saddle rails for a lightweight, aerodynamic solution. Designed for both single and dual bottle setups, it gives you flexibility to match your race or training needs.
Change your setup depending on your race – easily swap between single or dual bottles.
Sliding rail adjustability – fine-tune bottle placement for optimal reach and aerodynamics.
Tail light integration – Garmin and GoPro options available for clean rear visibility.
Aerodynamic & slim design – keeps bottles tucked neatly behind the saddle to reduce drag.
No bottle cages included – compatible with standard bottle cages.
Note: The dual system includes all components required to run either a dual or single bottle configuration.
Engineered specifically for the Selle Italia Watt Saddle, this BTS system mounts securely to the saddle’s existing mounting points for a lightweight, aerodynamic hydration solution. Designed for both single and dual bottle setups, it gives you the flexibility to change your configuration depending on your race.
Change your setup depending on your race – easily swap between single or dual bottles.
Sliding rail adjustability – fine-tune bottle placement for optimal reach and aerodynamics.
Tail light integration – Removable GoPro and Garmin options available for clean rear visibility.
Aerodynamic & slim design – keeps bottles tucked neatly behind the saddle to reduce drag.
No bottle cages included – compatible with standard bottle cages.
Note: The dual system includes all components required to run either a dual or single bottle configuration.
The Cervélo P Series Rear Bottle Mount is designed to fit the Cervélo P series with an integrated seat post mount, providing a secure and aerodynamic hydration solution. It allows for both single and dual bottle setups on the same mount, giving you the flexibility to adjust based on your needs.
The system also includes a removable light mount, compatible with Garmin quarter-turn mounts, GoPro adapters, and standard post-mount lights, ensuring visibility without interfering with your setup.
Key Features
💧 Single & Dual Bottle Setup – One mount supports both single and dual bottle configurations for added versatility.
⚡ Aerodynamic Design – Bottles are positioned under the saddle to minimise drag.
🔦 Removable Light Mount – Works with Garmin quarter-turn, GoPro, and standard post-mount lights.
🆕 Dual Vertical Stack Option – Now available with a dual vertically stacked bottle position.
📏 Shop drawings are included in the product photos to help you understand the sizing, mounting points, and setup options before ordering.
Note: You will need the OEM Cervélo Seatpost Water bottle Mount (see link below) for this system to install correctly.
No Bottle Cages are included.
