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Surly Karate Monkey Disc Frameset

Item #: FR251I00
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Surly Karate Monkey Disc Frameset

If you have been tossing the idea of getting a 29”er around for awhile, Surly has a very viable option. The Karate Monkey was one of the first 29”ers to hit the market. The heart of the Karate Monkey is the 4130 CroMoly steel tubing that the frame and fork are comprised of. As Surly stated “Butted where it matters to provide a durable yet resilient ride.” The steel frame absorbs shock, and offers the rider a more comfortable ride. The seat tube is curved forward, which allows the rear wheel to tuck under, and results in a shorter wheelbase. This provides better rear wheel traction. The rear “dropouts” are horizontal rear- load style with a derailleur hanger. Therefore it can be run as a single speed or multi- geared bike. You can now run your Karate Monkey with your favorite pair of disc brakes.

Technical Specifications:

  • Surly 3130 CroMoly steel. Main triangle is double- butted. TIG welded
  • 51mm IS disc mounts; Karate Monkey is disc brake only
  • Surly rear- facing horizontal dropouts with derailleur hanger, 135mm spacing; run it singlespped, internally geared, or with a derailleur
  • Clears tires up to 29x 2.55” (knobby)
  • Fork is 4130 CroMoly tapered straight blade

Geometry:

Size 16 18 20 22  
Seat Tube Length
(Center-Top)
406.4 457.2 508.0 558.8  
Top Tube Length
(Center-Center)
557.7 575.0 589.9 607.1  
Effective Top Tube Length
(Center-Center)
575.6 599.3 616.3 632.2  
Head Tube Angle 71.0 71.5 72.0 72.0  
Seat Tube Angle 73.0 73.0 73.0 73.0  
BB Drop 68.0 68.0 68.0 68.0  
Chainstay Length 431.0 431.0 431.0 431.0  
Wheelbase 1046.1 1064.8 1076.8 1093.0  
Standover Height 762.9 792.7 822.5 853.5  
Head Tube Length 90.0 100.0 110.0 125.0  
Fork Length 468.0 468.0 468.0 468.0  
Fork Rake 43.0 43.0 43.0 43.0
4.8 / 5.0
4 Reviews
5 Stars
4 Stars
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1 Star
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Versatile and tough steel 29er
Surly nailed the geometry for a 29er years before others did. Short chainstays, and a great geometry for excellent singletrack use.

PROS: price, Versatile, Tough

CONS: Weight

BEST USES: Riding, Enjoying life
February 24, 2012
Location:
San Bernardino, CA
Exactly what you hoped it would be.
Buy it, you should have already!

PROS: Nimble, Frame Quality, Handling, Ride, Solid

CONS: Heavy I Guess

BEST USES: Single speed, XC, long rides, Trail
October 4, 2012
Location:
Minnesota
Solid machine
Fast shipping as usual, 2.5 days from order to shipment at my front door, amazing!

PROS: Attractive Design, Durable

BEST USES: commuting, Mountain Biking
March 19, 2013
Location:
Calgary, AB
Makes a great trail bike!
Makes a great trail riding bike.

PROS: Steel Is Real, Good geometry
October 26, 2012
Location:
Northern WI

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.