TOPEAK RX BeamRack CB｜Seatpost-Mounted Beam Rack with Lightweight Carbon Construction

A lightweight 355g carbon beam rack that adds carrying capacity to sports bikes without rack mounts.

For road bikes and cross bikes, if you want to add carrying capacity while maintaining lightness, the "TOPEAK RX BeamRack CB" is highly recommended.

This seatpost-mounted beam rack is designed exclusively for the RX TrunkBag EX. It combines a lightweight carbon body with an aluminum alloy rack, achieving both excellent lightness and sufficient rigidity.

Installation is easy with just one 5mm hex wrench. It allows for relatively simple addition of carrying capacity to sports bikes without rack mounts and is suitable for a wide range of uses, from commuting and daily rides to light touring.

When combined with the RX TrunkBag EX, it's attractive for adding storage capacity while maintaining a clean look. It also comes with a bungee cord for securing luggage, making it a simple yet highly practical beam rack.

Features

• Seatpost-mounted beam rack exclusively for RX TrunkBag EX
• Lightweight carbon body + aluminum alloy rack construction
• Lightweight design weighing only 355g
• Easy installation with one 5mm hex wrench
• Compatible with sports bikes without rack mounts
• Maximum static load capacity of 7kg
• Includes bungee cord for securing luggage
• Includes tail reflector for rear visibility
• Ideal for commuting, daily rides, and light touring
• Achieves smart carrying style

SPEC

• Brand: TOPEAK
• Model: RX BeamRack CB
• Material: Carbon body / Aluminum alloy rack
• Size: L445 × W80 × H75mm
• Top plate size: L240 × W70mm
• Weight: 355g
• Load Capacity: 7kg (static)
• Compatible seatpost diameter: Ø25.4〜31.8mm
• Clamp height: 40mm
• Accessories: Bungee cord / Tail reflector

This is a convenient beam rack that allows you to add carrying capacity to sports bikes without rack mounts in a very smart way. The lightness of 355g is particularly attractive, and it seems unlikely to significantly disrupt the agility of a road bike.

The combination with the RX TrunkBag EX is also very compatible, making luggage transport for commuting and daily rides much more comfortable. The smooth attachment and detachment of the bag also make it easy for everyday use.

This model is perfect for those who "don't need a full-fledged rack but want to add a little carrying capacity." It's a recommended rack for those who want to balance a lightweight appearance with practicality.