2020 Surly Bikes Karate Monkey 27.5+ 140mm Front Suspension SM
Build
650B/27.5 in × 3 in
Insights
Average stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Surly Bikes Karate Monkey
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 607mm |
| Reach | 387mm |
| Stack to Reach Ratio | 1.57:1 |
| Seat Tube Length, C-T | 368mm |
| Top Tube Length, Effective/Horizontal Unknown | 590mm |
| Head Tube Angle | 67.5deg |
| Seat Tube Angle, Unknown | 71.5deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 44mm |
| Bottom Bracket Height | 324.2mm |
| Chainstay Length | 423mm |
| Chainstay Length Horizontal | 420.7mm |
| Front-Center | 676.7mm |
| Front-Center Horizontal | 675.3mm |
| Wheelbase | 1096mm |
| Fork Offset/Rake | 51mm |
| Fork Length, Unknown | 521mm |
| Trail | 97.3mm very high |
| Mechanical Trail | 89.9mm |
| Wheel Flop | 34.4mm |
| Standover Height | 775mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 138.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 154.2mm |
27.5+ 140mm Front Suspension Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 3in |
| Tire Outer Diameter | 736.4mm |
| Bike Length with Tires | 1832.4mm |
| Crank Length | 170mm |
| Handlebar Width | 750mm |
| Stem Length | 70mm |
| Stem Angle | 7deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
| Features | Single-speed capable |
Source:https://surlybikes.com/bikes/karate_monkey