Syn Erg AB03 - Measure Adaptor.png

Sync Ergonomics AB03 - Arm Cup Adaptor and Riser - Mount BTA

from $120.00

Designed specifically for Sync Ergonomics AB03 arm cups, this Adaptor and Riser system makes it easy to upgrade from the OEM single BTA mount to a SlipStream 3D Dual Bottle Mount. Get the extra hydration you need while keeping everything aero, secure, and perfectly integrated with your cockpit. 💨

💡 Key Features:
✅ Converts OEM Single BTA to Dual Bottle Mount
📏 Adjustable Stack Height for custom positioning
🔩 Secure, Stable Design for race-ready reliability
🛠️ Clean, Integrated Look to match your cockpit

Included:

  • Adaptor and hardware

  • Riser and hardware

  • 3 x 10mm Spacers (optional)

Replaces the Existing AB03 BTA Tower – Designed to mount directly in place of the stock AB03 tower. Arm cup spacing remains unchanged, making installation simple with no adjustments to your cockpit setup.

If you're unsure of your arm cup spacing, select Custom Spacing and you'll be prompted to provide the required measurements after adding the item to your cart—see Information below for measuring instructions.

Designed specifically for Sync Ergonomics AB03 arm cups, this Adaptor and Riser system makes it easy to upgrade from the OEM single BTA mount to a SlipStream 3D Dual Bottle Mount. Get the extra hydration you need while keeping everything aero, secure, and perfectly integrated with your cockpit. 💨

💡 Key Features:
✅ Converts OEM Single BTA to Dual Bottle Mount
📏 Adjustable Stack Height for custom positioning
🔩 Secure, Stable Design for race-ready reliability
🛠️ Clean, Integrated Look to match your cockpit

Included:

  • Adaptor and hardware

  • Riser and hardware

  • 3 x 10mm Spacers (optional)

Replaces the Existing AB03 BTA Tower – Designed to mount directly in place of the stock AB03 tower. Arm cup spacing remains unchanged, making installation simple with no adjustments to your cockpit setup.

If you're unsure of your arm cup spacing, select Custom Spacing and you'll be prompted to provide the required measurements after adding the item to your cart—see Information below for measuring instructions.

Extension Spacing:
Bar Angle:
Spacer Stack:

Custom Arm Cup Spacing

If you're unsure which arm cup spacing to select, choose Custom Spacing when ordering.

After adding the item to your cart, you'll be prompted to complete a short form with your measurements. We'll use these measurements to manufacture the adaptor to suit your existing AB03 arm cup position.

How to Measure

With your arm cups in their current riding position, take the following two measurements across the top edges of the arm cups, as shown in the diagram:

  • Point 1: Measure from Point 1 on the left arm cup to Point 1 on the right arm cup.

  • Point 2: Measure from Point 2 on the left arm cup to Point 2 on the right arm cup.

Points 1 and 2 correspond with the locations of the existing mounting holes in the arm cups. Take both measurements from the same reference point on each cup, as shown in the diagram.

Enter both measurements in millimetres (mm) when prompted after adding the product to your cart.

Please double-check both measurements before submitting your order, as your adaptor will be manufactured to suit the dimensions provided.