Surly

Tuggnut Chain Tensioner - QR/10mm Axles

Built for riders who demand reliability and precision, the Surly Tuggnut Chain Tensioner keeps your rear wheel locked exactly where it belongs—no slipping, no fuss. Designed for bikes with rear-facing horizontal dropouts, this stainless-steel tensioner is a small but mighty piece of hardware that makes chain adjustment smooth, consistent, and frustration-free.

Its investment-cast stainless construction stands up to years of abuse, while the thumbscrew and dual axle holes offer easy, tool-free adjustment for perfect chain tension. Whether you’re running a single-speed setup or dialing in a fixed gear, the Tuggnut delivers dependable alignment every time.

Surly even thought of the details—an aluminum adapter sleeve makes it compatible with both 10mm nutted and 6mm quick-release axles, and yes, there’s a built-in bottle opener for post-ride refreshment.

Key Features:

• Stainless steel construction for lasting durability and strength
• Dual axle holes and thumbscrew adjustment for precise chain positioning
• Compatible with QR and 10mm axles thanks to the included adapter sleeve
• Built-in bottle opener—because Surly knows what really matters after a ride

The Surly Tuggnut Chain Tensioner is the kind of simple, bombproof solution that keeps your ride dialed and your wheel exactly where you set it.