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Surly Karate Monkey Disc Frameset

Item #: FR251I00
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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

REVIEW SNAPSHOT®

by PowerReviews
Surly Karate Monkey Disc Frameset
 
4.8

(based on 4 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 4 customers

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Displaying reviews 1-4

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5.0

Solid machine

By Clam666

from Calgary, AB

About Me Avid Cyclist

Pros

  • Attractive Design
  • Durable

Cons

    Best Uses

    • commuting
    • Mountain Biking

    Comments about Surly Karate Monkey Disc Frameset:

    Solid frame, well finished and all components fit/screw-in perfectly.
    I use it for winter commuting with studded tires and it is just a delight.
    Too bad you cannot order a built bike in Canada... I had to spend quite a bit more to buy all parts separately.

    • Was this a gift?:
    • No
     
    5.0

    Makes a great trail bike!

    By Big Jon in WI

    from Northern WI

    Verified Reviewer

    Pros

    • Good geometry
    • Steel Is Real

    Cons

      Best Uses

      • Trail riding

      Comments about Surly Karate Monkey Disc Frameset:

      Makes a great trail riding bike.

       
      5.0

      Exactly what you hoped it would be.

      By elahmt

      from Minnesota

      Verified Reviewer

      Pros

      • Frame Quality
      • Handling
      • Nimble
      • Ride
      • Solid

      Cons

      • Heavy I Guess

      Best Uses

      • long rides
      • Single speed
      • Trail
      • XC

      Comments about Surly Karate Monkey Disc Frameset:

      Buy it, you should have already!

      (1 of 1 customers found this review helpful)

       
      4.0

      Versatile and tough steel 29er

      By Eric

      from San Bernardino, CA

      Verified Reviewer

      Pros

      • price
      • Tough
      • Versatile

      Cons

      • Weight

      Best Uses

      • Enjoying life
      • Riding

      Comments about Surly Karate Monkey Disc Frameset:

      Surly nailed the geometry for a 29er years before others did. Short chainstays, and a great geometry for excellent singletrack use.

      Displaying reviews 1-4

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