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Beta Rear Bottle Carrier

Regular price $135.00
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per 
 
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Save an average of 30% with Truemed. Click here to learn more!

Find Your Size

Recommended Size

We’ll suggest the best SP or Rogue size for you.

More Options. More Savings. More Riding.
30% Savings with Truemed, 0% APR with A2, Pro Deals, and Flexible Plans.
Discover Our Options

Click the Icons to Learn the SP Force AXS Specs

SRAM Force XG-1270 Cassette

Designed for the next generation of drivetrains, and the next generation of riders. The SRAM Force XG-1270 cassette is optimized for electronic shifting and features our X-Range gearing technology. Smooth, precise shifts, sized in 10-30.

SRAM Force AXS Crankset

This crankset features a 48-35T chainring and weighs only 573 grams. This is the newest generation of SRAM components that was just released in July 2025.

Leap Components 3D Printed Blips

Integrated blips that are 100% wireless.

SRAM Force AXS Rear Derailleur

Crafted from carbon fiber, this 12-speed rear derailleur weighs in at just 284 grams. Engineered for precision, it delivers some of the crispest, most reliable shifting on the market. It’s no surprise that cyclists everywhere praise the excellence of SRAM Force.

TRP HD-T910 Hydraulic Brakes

With the newest hydraulic braking system from TRP, integrated with SRAM's highest tier 'Paceline' rotors, you will have no shortage of braking power.
    • Get to know the SP Force AXS

      Beta Rear-Mounted Bottle Carrier: Sleek Hydration for Any Seatpost

      The TriRig Beta is a streamlined rear-mounted bottle carrier designed for compatibility with any seatpost using 10mm thru-rail hardware. It’s the perfect solution for riders using bikes like the Cervelo P2/P3 (rim brake versions), Scott Plasma 5, and many others. With a focus on simplicity and functionality, Beta is a beautiful combination of elegant design and efficient hydration.

      Secured with just two M5 button head bolts, the Beta can be adjusted independently of saddle position, allowing one bottle to be mounted directly behind the saddle or two bottles side-by-side. Its low-profile design ensures that the bottles remain in the aero shadow of the rider, delivering a drag-neutral hydration solution.

      Beta comes in two configurations:

      • Beta 45: Positions bottles at a 45-degree angle for a more aggressive setup with less frontal area.

      • Beta 63: Holds bottles at a 63-degree angle for easier access while riding.

      Both versions allow you to adjust the carrier to sit close to the saddle or further back to make room for a saddle bag, all while keeping the setup sleek and aero. The Beta also includes a titanium saddle rail and all necessary mounting hardware.

    Get to know the SP Force AXS

    Beta Rear-Mounted Bottle Carrier: Sleek Hydration for Any Seatpost

    The TriRig Beta is a streamlined rear-mounted bottle carrier designed for compatibility with any seatpost using 10mm thru-rail hardware. It’s the perfect solution for riders using bikes like the Cervelo P2/P3 (rim brake versions), Scott Plasma 5, and many others. With a focus on simplicity and functionality, Beta is a beautiful combination of elegant design and efficient hydration.

    Secured with just two M5 button head bolts, the Beta can be adjusted independently of saddle position, allowing one bottle to be mounted directly behind the saddle or two bottles side-by-side. Its low-profile design ensures that the bottles remain in the aero shadow of the rider, delivering a drag-neutral hydration solution.

    Beta comes in two configurations:

    • Beta 45: Positions bottles at a 45-degree angle for a more aggressive setup with less frontal area.

    • Beta 63: Holds bottles at a 63-degree angle for easier access while riding.

    Both versions allow you to adjust the carrier to sit close to the saddle or further back to make room for a saddle bag, all while keeping the setup sleek and aero. The Beta also includes a titanium saddle rail and all necessary mounting hardware.

    Matte Silver/Black
    Matte Black

    SP Force AXS Spec Guide

    Frameset T700 Carbon Fiber
    Fork A2I-Fork
    Seatpost A2SP-Ritchey
    Stem A2-SAGS
    Base Wheelset  Zipp 303 S, Tubeless Ready Thru Axle
    Tires

    Schwalbe Pro 1 25c

    Shifters SRAM AXS Blip in Leap Components Mount, Wireless
    Front Derailleur SRAM Force AXS eTap
    Rear Derailleur SRAM Force AXS 12-Speed
    Crank SRAM Force AXS 48-35
    BB SRAM Dub
    Brakes TRP HD-T910 Hydraulic
    Brake Rotors SRAM Paceline
    Cassette SRAM Force 10-30
    Chain Force flat top 12 speed
    Saddle WTB Rocket V Steel
    Handlebar Vision TriMax SI-013, Carbon

    Bike Assembly

    Arrives 92% Built

    Your bike shows up 92% assembled, complete with the tools and step-by-step instructions—no mechanical know-how required.

    Lifetime Warranty

    Yep, you heard that right. When you ride an A2, you can ride with confidence. That's because your SP is backed by our lifetime warranty. From your first race to your biggest achievement, we stand behind every SP frame, for life.