2021 Trek Bikes Roscoe 8 XL 21.5

Build

650B/27.5 in × 2.8 in

Insights

Somewhat upright stack and reach vs trend of hardtail trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
644mm
Reach
442mm
Stack to Reach Ratio
1.46:1
Seat Tube Length, C-T
521mm
Top Tube Length, Effective/Horizontal Center
666mm
Head Tube Angle
67.4deg
Effective Seat Tube Angle, Unknown
70.9deg
Seat Tube Exit Angle
69.7deg
Head Tube Length
120mm
Bottom Bracket Drop
42mm
Bottom Bracket Height
321.1mm
Chainstay Length
438mm
Chainstay Length Horizontal
436mm
Front-Center
733.2mm
Front-Center Horizontal
732mm
Wheelbase
1168mm
Fork Offset/Rake
44mm
Trail
103.5mm
very high
Mechanical Trail
95.6mm
Wheel Flop
36.7mm
Standover Height
760mm
Tire to Pedal Spindle Distance
With 170 mm cranks
200.1mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
151.1mm

8 Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.8in
Tire Outer Diameter
726.2mm
Bike Length with Tires
1894.2mm
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
186 cm
to
196 cm
PBH
87 in
to
92 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/