2020 Sonder Cortex Base Large
Build
700C/29 in × 2.5 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Sonder Cortex
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 615mm |
| Reach | 465mm |
| Stack to Reach Ratio | 1.32:1 |
| Seat Tube Length, C-T | 465mm |
| Top Tube Length, Effective/Horizontal HT Top | 636mm |
| Head Tube Angle | 66deg |
| Effective Seat Tube Angle, ETT HT Top | 74.5deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 40mm |
| Bottom Bracket Height | 334.5mm |
| Chainstay Length | 447mm |
| Chainstay Length Horizontal | 445.2mm |
| Front-Center | 775.8mm |
| Front-Center Horizontal | 774.8mm |
| Wheelbase | 1220mm |
| Fork Offset/Rake | 51mm |
| Fork Length (Axle-To-Crown) | 540mm |
| Trail | 110.9mm very high |
| Mechanical Trail | 101.3mm |
| Wheel Flop | 41.2mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 231.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 164.5mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 1969mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | N/A |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 9 in to 6 ft 2 in |
Source:https://alpkit.com/collections/sonder-cortex/products/sonder-cortex-gx-eagle