Topeak Zi:RAK Thru-Axle – The precise axle solution for your Zi:RAK system

With the Topeak Zi:RAK Thru-Axle, you can perfectly equip your road or gravel bike for the versatile Zi:RAK luggage carrier system. The axle replaces your original thru-axle 1:1, providing maximum stability – and opens the door to the complete Zi:RAK Series. It is easy to install, robustly constructed, and ideal if you want to flexibly extend your bike for commuting, bikepacking, or touring.

Benefits & Features

✅ Optimized for the Zi:RAK Series – Designed to precisely, safely, and play-free accommodate the carriers of the Zi:RAK line.
✅ Suitable for 700C Road & Gravel Bikes – Ideal for modern bikes with a thru-axle system and clearly defined sizing.
✅ Replace your original thru-axle – The Zi:RAK Thru-Axle completely replaces your existing axle and integrates seamlessly into the frame concept.
✅ Various thread pitches (TP) available – Ensuring a perfect fit: check the thread pitch of your existing axle before purchasing.
✅ Includes spacer system – Adjust the height precisely to your frame; install the correct spacers according to the instructions.
✅ Lightweight, robust aluminum construction – High-quality materials ensure low weight and maximum rigidity.

Technical Details

• Material: Aluminum
• Axle Length: 170 mm
• Thread Pitch (TP):
  • 1.0 (TA2420-SP01) - M12 x P1.0
  • 1.5 (TA2420-SP02) – M12 x P1.5
  • 1.75 (TA2420-SP03) – M12 x P1.75
  • 1.0 (TA2420-SP04) – SRAM UDH
• TL: 20 mm
• Weight: 50–60 g (depending on spacer configuration)
• Features: Replaces the original thru-axle; includes matching spacers

Delivery Contents

• Topeak Zi:RAK Thru-Axle
• Spacer set for fine adjustment
• Installation instructions