2020 Surly Bikes Karate Monkey 27.5+ 140mm Front Suspension
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Fork
- Steel
- Suspension
- 140mm fork travel
- Features
- Disc brake, Single-speed capable
Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
XS | SM | MD | LG | XL | |
Stack | 607mm | 607mm | 608mm | 617mm | 627mm |
Reach | 361mm | 387mm | 412mm | 434mm | 457mm |
Stack to Reach Ratio | 1.68:1 | 1.57:1 | 1.48:1 | 1.42:1 | 1.37:1 |
Seat Tube Length, C-T | 330mm | 368mm | 419mm | 470mm | 470mm |
Top Tube Length, Effective/Horizontal Unknown | 565mm | 590mm | 615mm | 640mm | 640mm |
Head Tube Angle | 67.5deg | 67.5deg | 67.5deg | 67.5deg | 67.5deg |
Seat Tube Angle, Unknown | 71.5deg | 71.5deg | 71.5deg | 71.5deg | 71.5deg |
Head Tube Length | 100mm | 100mm | 100mm | 110mm | 120mm |
Bottom Bracket Drop | 44mm | 44mm | 44mm | 44mm | 44mm |
Bottom Bracket Height | 324.2mm | 324.2mm | 324.2mm | 324.2mm | 324.2mm |
Chainstay Length | 423mm | 423mm | 423mm | 423mm | 423mm |
Chainstay Length Horizontal | 420.7mm | 420.7mm | 420.7mm | 420.7mm | 420.7mm |
Front-Center | 651.8mm | 676.7mm | 701.7mm | 727.6mm | 752.6mm |
Front-Center Horizontal | 650.3mm | 675.3mm | 700.3mm | 726.3mm | 751.3mm |
Wheelbase | 1071mm | 1096mm | 1121mm | 1147mm | 1172mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm | 51mm |
Fork Length, Unknown | 521mm | 521mm | 521mm | 521mm | 521mm |
Trail | 97.3mm very high | 97.3mm very high | 97.3mm very high | 97.3mm very high | 97.3mm very high |
Mechanical Trail | 89.9mm | 89.9mm | 89.9mm | 89.9mm | 89.9mm |
Wheel Flop | 34.4mm | 34.4mm | 34.4mm | 34.4mm | 34.4mm |
Standover Height | 757mm | 775mm | 797mm | 826mm | 855mm |
Tire to Pedal Spindle | 113.6mm 170 mm cranks | 138.5mm 170 mm cranks | 158.5mm 175 mm cranks | 184.4mm 175 mm cranks | 209.4mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 154.2mm 170 mm cranks | 154.2mm 170 mm cranks | 149.2mm 175 mm cranks | 149.2mm 175 mm cranks | 149.2mm 175 mm cranks |
27.5+ 140mm Front Suspension Build
XS | SM | MD | LG | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 3in | 3in | 3in | 3in | 3in |
Tire Width Max | 3in | 3in | 3in | 3in | 3in |
Tire Outer Diameter | 736.4mm | 736.4mm | 736.4mm | 736.4mm | 736.4mm |
Bike Length with Tires | 1807.4mm | 1832.4mm | 1857.4mm | 1883.4mm | 1908.4mm |
Crank Length | — | 170mm | 175mm | 175mm | 175mm |
Handlebar Width | — | 750mm | 800mm | 800mm | 800mm |
Stem Length | — | 70mm | 70mm | 70mm | 80mm |
Stem Angle | — | 7deg | 7deg | 7deg | 7deg |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Trail MTBSource:https://surlybikes.com/bikes/karate_monkey