2021 Stanton Bikes Switchback 631 Next Gen UK Base 18"
Build
650B/27.5 in × 2.6 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail trail mtb bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 619mm |
| Reach | 460.9mm |
| Stack to Reach Ratio | 1.34:1 |
| Seat Tube Length, Unknown | 457mm |
| Top Tube Length, Effective/Horizontal Unknown | 608.3mm |
| Top Tube Slope | 17.1deg |
| Head Tube Angle | 66.5deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 48mm |
| Bottom Bracket Height | 310mm |
| Chainstay Length | 428mm |
| Chainstay Length Horizontal | 425.3mm |
| Front-Center | 751.3mm |
| Front-Center Horizontal | 749.8mm |
| Wheelbase | 1175.1mm |
| Fork Offset/Rake | 44mm |
| Fork Length, Unknown | 509mm |
| Trail | 107.7mm very high |
| Mechanical Trail | 98.8mm |
| Wheel Flop | 39.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 223.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 140mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.6in |
| Tire Outer Diameter | 716.1mm |
| Bike Length with Tires | 1891.2mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Suspension Sag | 25% |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 177 cm to 185 cm |
Source:https://www.stantonbikes.com/product/slackline-gen-3/