2021 Specialized Bicycles Stumpjumper Comp Alloy (High BB) S4
Build
700C/29 in × 2.3 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Specialized Bicycles Stumpjumper
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Swept Back Bar
Category: Flat Bar
vs full-suspension trail mtb bikesCategory: Flat Bar
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 627mm |
| Reach | 480mm |
| Stack to Reach Ratio | 1.31:1 |
| Seat Tube Length, Unknown | 425mm |
| Top Tube Length, Effective/Horizontal Center | 615mm |
| Head Tube Angle | 65.5deg |
| Effective Seat Tube Angle, Unknown | 77.7deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 35mm |
| Bottom Bracket Height | 334.4mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 438.6mm |
| Front-Center | 799mm |
| Front-Center Horizontal | 798.4mm |
| Wheelbase | 1237mm |
| Fork Offset/Rake | 44mm |
| Fork Length, Unknown | 550mm |
| Trail | 120mm very high |
| Mechanical Trail | 109.2mm |
| Wheel Flop | 45.3mm |
| Standover Height | 753mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 259.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 164.4mm |
Comp Alloy (High BB) Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.3in |
| Tire Outer Diameter | 738.8mm |
| Bike Length with Tires | 1975.8mm |
| Handlebar Width | 780mm |
| Stem Length | 50mm |
| Suspension Type | Full suspension |
| Bar Type | Swept Back Bar |
| Fork Travel | 140mm |
| Rear Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 173 cm to 188 cm |
Source:https://www.specialized.com/us/en/stumpjumper-comp-alloy/p/199785?color=320379-199785