Surly Krampus Front Suspension

The Krampus is a pioneer of the 'plus' bike category, designed specifically to run high-volume, large-diameter tires. This setup provides extra traction and float over rough terrain, while the geometry—a long toptube paired with short chainstays—keeps the handling snappy and fun on technical trails.

The frame is optimized for 29 x 3-inch tires, which is the sweet spot for the bike's intended ride quality. While you have some flexibility, sticking to the designed tire clearance ensures you maintain the correct bottom bracket height and handling characteristics.

Absolutely. The Krampus is a favorite among custom builders because it embraces modern mountain bike standards, including thru-axles, a 44mm headtube, and dropper post compatibility. It is designed to be versatile, though note that it is strictly for disc brakes only.

Surly's Gnot-Boost spacing is a clever design that allows the frame to accept both 142mm and 148mm (Boost) rear hub standards. This gives you more options when sourcing wheels or upgrading components down the road.

The combination of a long front end and short rear end creates a bike that feels stable at speed but remains easy to maneuver through tight corners. It is a playful, aggressive geometry that encourages you to push harder on descents.