Surly Karate Monkey Frameset
Multipurpose Hardtail Mountain Bike
Karate Monkey delivers a resilient, lively ride on all sorts of gnarly terrain. Its frame is a highly-versatile canvas for whatever dirty masterpiece your brain cooks up. According to our computing machine (Thor) it can be set up in approximately 487 different configurations.
Originally designed as a 29er (and the frame that helped spark the 29” wheel movement), the latest Karate Monkey is designed to perform just as admirably as a 27.5+ rig as well. This allows you to pick your poison — provided your poison is having a really great time while permanently donning a shit-eating grin, of course.
- Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension corrected fork
- Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though)
- Clearance for 29” x 2.5” or 27.5” x 3” tires
View our custom build gallery here
For a no-obligation build quote contact us here.
Specifications
| Frame | Surly Karate Monkey – 4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated |
| Fork | Surly Karate Monkey – 4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated |
| Suspension Fork Length (Travel) | Max. Suspension fork length: 551 x 51mm (27.5+ 140mm) |
| Rigid Fork Length | 483mm |
| Fork Offset | 47mm |
| Rear Brake | Disc – 51mm I.S. (180mm max rotor) |
| Axle to Crown | 483mm |
| Rear Spacing | “Gnot-Boost” 145mm |
| Rear Axle Size | 12 x 142mm or 12 x 148mm (Surly axle included) |
| Front Brake (Rotor) | Disc – 51mm I.S. (203mm max rotor) |
| Stock Headset Upper (S.H.I.S.) | ZS44/28.6 |
| Stock Headset Lower (S.H.I.S.) | EC44/30 |
| Front Axle Size | 15 x 110mm (Surly axle included) |
| Steerer Tube | Ø28.6mm (1-1/8″) |
| Crown Race | Ø30mm (1-1/8″) |
| Seatpost | Ø30.9mm |
| Dropper Post Compatible | Yes |
| Seatpost Clamp | Ø33.1mm |
| Front Derailleur Clamp | (Ø34.9mm) |
| Front Derailleur Type | High direct mount top-pull (Ø34.9mm); 26mm offset adapter (not included) for 142 or 135mm rear hub spacing; 29mm offset adapter (not included) for 148mm rear hub spacing |
| Bottom Bracket | 73mm threaded (1.37″ x 24TPI) |
| Crankset (Max Ring) | 1x (Mtn): 28T / 2x (Mtn): 24/34T / 1x (Boost): 32T / 2x (Boost): 24/36T |
| Bottle Mounts | 1 Standard + 1 Three-Pack (XS – M) / 2 Standard + 1 Three-Pack (L – XL) |
| Fork Mounts | 2 Three-Pack |
| Front Fender Mounts | N/A |
| Rear Fender Mounts | Yes |
| Paint Colour | Peach Salmon Sundae |
| Frame size | XS, S, M, L, XL |
Customer Service Guarantee
Expect outstanding customer service that is personalised to meet your needs.
Free Assembly & Setup
Our team of experienced mechanics will handle the assembly and setup for you.
6 Month Tuneup
Our expert service team will give your bike a free tune-up within the first 6 months.
Garage 529 Registration
We will sign you up to Garage 529 security and provide you with a unique code.



















