The Profile Design Rear Hydration Mount provides a clean and adjustable solution for increasing hydration and storage capacity on race day and during long training rides. Mounting directly to standard 7 mm saddle rails, it sits neatly behind the saddle and allows riders to carry one or two bottles without affecting cockpit space or front-end setup.

An adjustable arch clamp system provides up to 14° of tilt adjustment, allowing bottle angle and position to be fine-tuned for improved accessibility and compatibility across different saddle setups and rider positions.

Designed to sit close behind the saddle, the system creates a streamlined setup while adding valuable carrying capacity for longer events and training sessions.

Ideal for: riders needing additional hydration capacity for Ironman, 70.3 and long-course training.

Bike Fit Note: For long-course racing, hydration and nutrition planning often extends beyond simply adding bottles to the bike. During bike fits I regularly help athletes determine the best way to carry fluids, nutrition and race essentials while maintaining comfort, accessibility and aerodynamics.

• Material: Precision machined and stamped 6061-T6 aluminum

• Adjustment: 14 degrees of tilt adjustment

• Cage Material: Injected Nylon/Glass Fiber (Vise Cage)

• Capacity: 1 or 2 cage compatible 

• Cage: Vise

• Color: Matte Black

• Weight: 200G

* Includes 2 lightweight Profile Design Vise Cages

The Profile Design HSA 800 EVO is a between-the-arms hydration system designed to provide convenient access to fluids while maintaining a clean and aerodynamic front-end setup. Positioned between the aerobars, it allows riders to stay hydrated without frequently leaving the aero position, helping maintain comfort and efficiency during training and racing.

The updated EVO design incorporates a flexible drinking hose with magnetic retention, an integrated Garmin mount and an improved rear cap system that can be removed for easier cleaning and maintenance. A secure refill port helps reduce splashing, making race-day refills quick and straightforward.

The redesigned mounting system offers improved compatibility across a wider range of aerobar setups, while the high-retention cage keeps bottles secure over rough roads and race conditions. The setback mounting design also allows the bottle to sit further back between the extensions, improving accessibility and reducing interference with narrower armrest positions.

The bottle itself has been shaped to minimise frontal area and integrate cleanly into the cockpit, helping maintain an aerodynamic setup without compromising practicality.

Ideal for: riders wanting an integrated between-the-arms hydration setup with easy access and improved aerobar compatibility.

Bike Fit Note: For long-course athletes, hydration systems form part of the overall bike setup rather than just acting as a bottle holder. During bike fits I regularly help athletes optimise hydration and nutrition storage so everything remains accessible without compromising comfort or aerodynamics.

Specs

• Bottle Construction: BPA-Free, Food safe HDPE Bottle

• Bottle Capacity: 27oz (800ml)

• Compatibility: HSA 800 EVO Bottle or use with Standard Cycling Water Bottle

• Computer Compatibility: Garmin: Mount is optional and can be removed.  (Wahoo: Adapters available via 3rd party purchase).

• Cage / BTA Construction: Injected nylon/glass fiber construction

• Mount offset: 30mm

• Mount drop: 10mm

• Extension Width Requirement: 80mm - 120mm (center - center)

• Colors: Black

• Weight: 387g (System), 100g (Bracket Only)