Shop BTA Systems
Between-the-Arms (BTA) Systems
SlipStream 3D BTA Systems are built for triathlon and time trial riders seeking a cleaner, more secure between-the-arms hydration setup. Our range includes UnderCup mounts, dual bottle systems, cockpit-specific options, riser kits and custom fits for bikes from Cervelo, Giant, Trek, Canyon, Cube, Liv, Sync Ergonomics and Profile Design.
BTA systems keep hydration accessible while maintaining an aero cockpit. Each mount focuses on fit, stability and adjustability, with features like bar angle selection, stack height adjustment, multiple bottle positions and light mount integration. If your cockpit isn’t listed, use the Custom UnderCup BTA Form and we’ll create a solution tailored to your bike
Custom BTA
Custom BTA
Not seeing an option that fits your specific setup?
Use the Custom UnderCup BTA Form to send through your measurements, photos and setup details. We’ll review your cockpit and help create a BTA mounting solution matched to your bike, bar angle, stack height and hydration needs at no extra cost!
From $215