2020 REI Coop DRT 3.1 Base M
Build
650B/27.5 in × 2.8 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of REI Coop DRT 3.1
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 608mm |
| Reach | 450mm |
| Stack to Reach Ratio | 1.35:1 |
| Seat Tube Length, C-T | 430mm |
| Top Tube Length, Effective/Horizontal Center | 608mm |
| Top Tube Slope | 18.9deg |
| Head Tube Angle | 67deg |
| Seat Tube Angle | 75deg |
| Bottom Bracket Drop | 113.1mm |
| Bottom Bracket Height | 250mm |
| Chainstay Length | 441mm |
| Chainstay Length Horizontal | 426.3mm |
| Front-Center | 763.2mm |
| Front-Center Horizontal | 754.8mm |
| Wheelbase | 1181mm |
| Fork Offset/Rake | 46mm |
| Trail | 104.2mm very high |
| Mechanical Trail | 95.9mm |
| Wheel Flop | 37.5mm |
| Standover Height | 781mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 230.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 80mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.8in |
| Tire Outer Diameter | 726.2mm |
| Bike Length with Tires | 1907.2mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 6 in to 5 ft 9 in |
Source:https://www.rei.com/product/180587/co-op-cycles-drt-31-bike