2011 Specialized Stumpjumper vs 2009 Surly Karate Monkey
The XS is the Surly Karate Monkey size closest to your 15.5 Specialized Stumpjumper. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Surly Karate Monkey
Compared with the Specialized Stumpjumper in 15.5, the Surly Karate Monkey in XS places the top of the head tube 41 mm higher and about as far forward, relative to the bottom bracket. Its wheelbase is 11 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +41 mm
- Higher front end
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- −11 mm
- Shorter: quicker to change direction
- Head angle
- −1.5°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Specialized Stumpjumper, 15.5Surly Karate Monkey, XSDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper 15.5 | Surly Karate Monkey XS | Difference |
|---|---|---|---|
| Reach | 378mm | 377 | −1 mm |
| Stack | 556mm | 597 | +41 mm |
| Head tube angle | 70.5° | 69 | −1.5° |
| Seat tube angle | 73° | 73 | ±0.0° |
| Chainstay length | 424mm | 423 | −1 mm |
| Wheelbase | 1064mm | 1053 | −11 mm |
| BB height | 304mm | not listed | |
| Standover | 770mm | 743 | −27 mm |
| Seat tube length | 394mm | 330 | −64 mm |
| Effective top tube | not listed | 560 | |
| BB drop | not listed | 55 | |
| Fork length | not listed | not listed | |
| Head tube length | not listed | 100 |
Differences are the Surly Karate Monkey minus the Specialized Stumpjumper. Full charts: 2011 Specialized Stumpjumper, 2009 Surly Karate Monkey.
Where each sits in its class
Specialized StumpjumperSurly Karate Monkey
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized StumpjumperS-Works | Surly Karate MonkeyKarate Monkey - Organic Eggplant |
|---|---|---|
| Fork | Specialized Future Shock S90 | not listed |
| Shifter | SRAM XX | Shimano Deore |
| Derailleur | SRAM XX XX SL | Shimano Deore |
| Cassette | SRAM XX | 12-speed, 11-51t |
| Chain | SRAM PC-1090 | KMC X-12 |
| Wheelset | Roval Control SL | Novatec hubs, WTB ST i40 TCS 2.0, 27.5" |
| Tire | Specialized S-Works Fast Trak LK, Specialized S-Works Renegade | Surly Dirt Wizard |
| Brake | Avid XX, Avid XX World | SRAM BB5 |
| Stem | Syntace F109 | Kalloy 31.8mm |
| Saddle | Specialized Phenom Expert | Selle Italia |
| Frame | not listed | Surly Karate Monkey |
| Crankset | not listed | Shimano Deore MT510 |
| Bottom bracket | not listed | Shimano 73mm threaded |
| Rotor | not listed | SRAM 180/160mm, 6-bolt |
| Handlebar | not listed | Salsa Rustler |
| Grips | not listed | Velo Black |
| Headset | not listed | Cane Creek |
| Seatpost | not listed | Kalloy 30.9mm |
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