Surly Krampus 29+ Frameset Mountain Bike Frame with Disc Brake Mounts

The Surly Krampus 29+ Frameset is a trailblazer in the mountain biking world, redefining what a 29er bike can be. Known as the first 'plus' bike to hit the market, it revolutionizes trail riding by embracing high-volume, large diameter tires that enhance control, comfort, and traction on diverse terrains. Far from the misconception that bigger tires slow you down, the Krampus proves that they can actually boost your speed and confidence on the trail.

Designed with a distinctive geometry that’s long in the front and compact in the rear, the Krampus frameset offers an unmatched balance of stability and agility. Its long toptube combined with short chainstays creates a responsive ride that excels at shredding technical trails. This is a bike for riders who want to push their limits, combining rugged durability with modern features like dropper post compatibility and thru-axles to maximize performance.

Crafted from 4130 Chromoly with Natch tubing, this frameset is built to endure the demands of aggressive mountain biking while maintaining a lightweight and strong profile. The frame is double-butted and TIG welded with an ED coating for added corrosion resistance and longevity. Whether you prefer a suspension fork or a rigid setup, the Krampus can accommodate both, with clearance for massive 29" x 3" tires that soak up trail chatter and keep you rolling smoothly.

What It’s Good For

• Delivering superior traction and control with 29" x 3" tire clearance
• Enhancing trail agility through its long front and short rear geometry
• Compatibility with modern mountain bike standards including dropper posts and thru-axles
• Providing a durable and lightweight frame constructed from high-quality 4130 Chromoly steel
• Offering versatility to fit suspension forks up to 550 x 51mm travel or rigid forks
• Supporting a wide range of components thanks to its adaptable rear spacing and front derailleur mounts
• Equipped with mounts for mudguards and extra bottle cages for long rides

What It’s NOT Good For

• Not compatible with rim brakes, requiring disc brake setups only
• Not designed for riders seeking a lightweight carbon frame for competitive racing
• Unsuitable for those who prefer smaller tire sizes or traditional 26" wheels
• Not intended for casual cycling on paved roads or non-technical trails

Frequently Asked Questions

Can I use a suspension fork with this frameset?
Yes, the Krampus 29+ Frameset is designed to accommodate suspension forks up to 550 x 51mm travel (29+ 120mm), allowing you to tailor your setup for maximum trail performance.

Is the frameset compatible with dropper posts?
Absolutely, the frame includes full dropper post compatibility to give you the flexibility to adjust your saddle height on the fly.

What type of brakes does this frameset support?
The Krampus is exclusively compatible with disc brakes; rim brakes are not supported due to the frame design and modern trail standards.

What rear hub spacing options are available?
The rear spacing is a "Gnot-Boost" 145mm design, compatible with 12 x 142mm or 12 x 148mm hubs. It can also fit 10 x 135mm hubs with the use of Surly 10/12 Adapter Washers (not included).

Does the frameset include mounts for accessories?
Yes, it comes with mounts for rear mudguards and supports one standard and one three-pack bottle cage mounts, perfect for extended trail rides.