Experience the pioneering design that ignited the plus-size mountain bike movement with this exceptional 29" steel frameset. Crafted from 100% premium Surly 4130 CroMoly steel, the frame and fork feature a double-butted main triangle and a robust 44mm headtube, ensuring durability and responsive handling on rugged trails. The updated tube-set incorporates the same trumpet tubes found on the acclaimed 2017 Karate Monkey frame, enhancing strength without compromising weight.
- Surly’s innovative Gnot-Boost rear hub spacing of 145mm is compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle, and 135mm quick-release hubs, offering versatile wheel options.
- Adjustable Gnot-Boost rear dropouts provide precise alignment for various drivetrain setups.
- Internal routing for dropper seatposts supports seamless integration and clean aesthetics.
- The 30.9mm seat tube diameter accommodates a wide range of seatpost options.
- Designed to fit up to 29 x 3.0” tires, this frame delivers exceptional traction and stability across diverse terrains.
| Size | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| A. Effective Top Tube | 23.03 | 24.02 | 25 | 25.98 |
| B. Stand Over | 30.31 | 31.38 | 32.48 | 33.58 |
| C. Reach | 15.91 | 16.77 | 17.64 | 18.5 |
| D. Stack | 23.35 | 23.7 | 24.09 | 24.45 |
| E. Total Seat Tube Length | 14.49 | 16.5 | 18.5 | 20.51 |
| F. Headtube Length | 3.54 | 3.94 | 4.33 | 4.72 |
| G. Headtube Angle |
69.0
|
69.0
|
69.0
|
69.0
|
| H. Seat Tube Angle |
73.0
|
73.0
|
73.0
|
73.0
|
| I. BB Drop | 2.56 | 2.56 | 2.56 | 2.56 |
| K. Chainstay Length | 17.13 | 17.13 | 17.13 | 17.13 |
| L. Fork Length Axle to Crown | 19.02 | 19.02 | 19.02 | 19.02 |
| M. Fork Offset | 1.85 | 1.85 | 1.85 | 1.85 |
| N. Wheelbase | 42.8 | 43.82 | 44.8 | 45.83 |
| Crank Arm Length | ||||
| Handlebar Width | ||||
| Recommended Rider Height | ||||
| Stem Length |
At Bicycle Warehouse your satisfaction is our top priority. We understand the importance of your happiness with every purchase, which is why we proudly offer our 30 Day Love It Guarantee for your unused gear and 14 days on all bikes. Our exchange and returns process is quick and easy.
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