2021 Trek Bikes Roscoe 8 S 15.5
Build
650B/27.5 in × 2.8 in
Insights
Somewhat upright stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Trek Bikes Roscoe
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 614mm |
| Reach | 364mm |
| Stack to Reach Ratio | 1.69:1 |
| Seat Tube Length, C-T | 368mm |
| Top Tube Length, Effective/Horizontal Center | 574mm |
| Head Tube Angle | 67.2deg |
| Effective Seat Tube Angle, Unknown | 71.2deg |
| Seat Tube Exit Angle | 70.2deg |
| Head Tube Length | 90mm |
| Bottom Bracket Drop | 40mm |
| Bottom Bracket Height | 323.1mm |
| Chainstay Length | 438mm |
| Chainstay Length Horizontal | 436.2mm |
| Front-Center | 646.1mm |
| Front-Center Horizontal | 644.8mm |
| Wheelbase | 1081mm |
| Fork Offset/Rake | 44mm |
| Trail | 104.9mm very high |
| Mechanical Trail | 96.7mm |
| Wheel Flop | 37.5mm |
| Standover Height | 754mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 113mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 153.1mm |
8 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.8in |
| Tire Outer Diameter | 726.2mm |
| Bike Length with Tires | 1807.2mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 153 cm to 166.5 cm |
| PBH | 72 in to 81 in |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/trail-mountain-bikes/roscoe/roscoe-8/p/28487/?colorCode=bluedark_grey, https://www.trekbikes.com/international/en_IN_TL/international/en_IN_TL/bikes/mountain-bikes/trail-mountain-bikes/roscoe/roscoe-8/p/28487/