2020 Surly Bikes Pack Rat Base 54cm 650b
Build
650B/27.5 in × 48 mm
Insights
Design deviates from other sizes of Surly Bikes Pack Rat
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 566mm |
| Reach | 392mm |
| Stack to Reach Ratio | 1.44:1 |
| Seat Tube Length, C-TTT | 540mm |
| Top Tube Length, Effective/Horizontal Center | 565mm |
| Top Tube Length, Actual C-C | 557mm |
| Top Tube Slope | 2.9deg |
| Head Tube Angle | 74deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 145mm |
| Bottom Bracket Drop | 55mm |
| Bottom Bracket Height | 285mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 411.3mm |
| Front-Center | 587.2mm |
| Front-Center Horizontal | 584.7mm |
| Wheelbase | 996mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 390mm |
| Trail | 51.7mm mid/neutral |
| Mechanical Trail | 49.7mm |
| Wheel Flop | 13.7mm |
| Standover Height | 807mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 77.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 115mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 48mm |
| Tire Outer Diameter | 680mm |
| Bike Length with Tires | 1676mm |
| Crank Length | 170mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
| Features | Single-speed capable |
Source:https://surlybikes.com/bikes/pack_rat