Beta Bottle Carrier (45/63) Installation Guide

Pre Step — Verify Compatibility

Confirm your seat post set up:

  • 10 mm Ritchey thru-rails present → Carrier can mount directly

  • Standard saddle rails → Beta Saddle Bracket required (see Beta Saddle Bracket Install Guide).

⚠️ Bikes without 10 mm thru-rails cannot mount the carrier directly.

Step 1 — Position the Carrier

We always recommend snapping a picture of or marking your current saddle position before installation so as not to lose your exact position.

  1. Remove the saddle clamp from seatpost using the two top-down bolts. If your saddle does not have a slot through it, you may need to first remove the saddle to access these bolts.

  2. Remove the saddle topper rail (usually a dumb-bell shaped piece from the 10mm rail slot.

  3. Slide the Beta rod into the seatpost, positioning the vertical holes directly under where the saddle topper needs to be positioned.
  4. Replace the bolts through the saddle topper into the Beta rail. Ensure there is enough space to attach the Beta Carrier to the rear portion of the rail.

  5. Tighten evenly (final torque applied after alignment). Replace saddle if necessary.

Step 3 — Install Mounting Hardware

  1. Insert the two M5 button head screws through the carrier mounting holes (as shown by blue arrows)

  2. Thread screws by hand first to avoid cross-threading

  3. Tighten both screws evenly

Step 4 — Torque to Specification

  • Torque each M5 button head screw to 4–5 Nm

📌 Use a calibrated torque wrench. Do not exceed recommended torque.

Step 5 — Install Bottle Cages

  • Using the threaded holes on the carrier - install your bottle cages 

  • There are three different boss configurations 

  • Can mount two bottles side-by-side (bottles will be vertical) 

  • Recommended to use two Kappa Saddle Cages