Surly

Handlebar Clamp Shim - 25.4mm to 31.8mm

The Surly Handlebar Clamp Shim is the simple, smart solution for riders who refuse to let mismatched sizes slow them down. Designed to adapt a 25.4mm handlebar to fit a 31.8mm stem, this shim lets cyclists mix components freely without compromising performance or safety.

Crafted with Surly’s signature no-nonsense durability, the shim ensures a snug, secure fit that won’t budge even under aggressive riding. Whether upgrading an older bike or experimenting with cockpit setups, it’s a small part that makes a big difference in flexibility and ride customization.

• Versatile fit: Adapts 25.4mm handlebars to 31.8mm stems for broader component compatibility.
• Secure hold: Maintains firm, slip-free contact under load.
• Durable construction: Built to last through years of rides and wrench sessions.
• Easy installation: Quick to fit and remove when swapping bars or stems.

For riders who like their bikes dialed just right, the Surly Handlebar Clamp Shim keeps the setup options wide open.