2020 Specialized Bicycles Stumpjumper EVO Alloy 27.5 - Frameset S3
Build
650B/27.5 in × 2.6 in
Insights
Somewhat aggressive stack and reach vs trend of full-suspension all-mountain/enduro mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 610mm |
| Reach | 490mm |
| Stack to Reach Ratio | 1.24:1 |
| Seat Tube Length, C-T | 450mm |
| Top Tube Length, Effective/Horizontal HT Top | 647mm |
| Top Tube Slope | 16.1deg |
| Head Tube Angle | 63.5deg |
| Seat Tube Angle | 75.6deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 33mm |
| Bottom Bracket Height | 325mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 438.8mm |
| Front-Center | 820mm |
| Front-Center Horizontal | 819.2mm |
| Wheelbase | 1258mm |
| Fork Offset/Rake | 37mm |
| Fork Length (On-Axis) | 542mm |
| Trail | 137.2mm very high |
| Mechanical Trail | 122.8mm |
| Wheel Flop | 54.8mm |
| Standover Height | 764mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 292mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 155mm |
Alloy 27.5 - Frameset Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.6in |
| Tire Outer Diameter | 716.1mm |
| Bike Length with Tires | 1974.1mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 150mm |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/stumpjumper-evo-alloy-27-5--frameset/p/173498?color=271082-173498