Surly Rear Thru-Axle

This axle is specifically designed for frames with 197 mm hub spacing and requires a 12 mm diameter thru-axle. Before purchasing, verify your frame's spacing and ensure your hub is compatible with a 1.0 mm thread pitch.

A bolted axle offers a lower profile, which keeps the hardware tucked away and less prone to snagging on trail debris. It also provides a cleaner aesthetic and a very secure, fixed connection that won't vibrate loose during aggressive riding.

While the dimensions match standard 12x197 mm spacing, compatibility depends on your specific hub's thread requirements. You must confirm that your hub accepts a 1.0 mm thread pitch, as this is the standard for this Surly model.

At 80 grams, this chromoly steel axle is built for durability and strength rather than ultralight performance. While it may be slightly heavier than aluminum alternatives, the steel construction provides superior resistance to bending and wear.

Yes, because this is a bolted design, you will need a hex wrench—typically a 6mm or 8mm depending on the bolt head—to tighten it securely. This ensures a firm, reliable connection that stays put until you decide to remove the wheel.