2021 Trek Bikes Rail 5 21.5 High

Build

700C/29 in × 2.6 in

Insights

Average stack and reach vs trend of full-suspension all-mountain/enduro mtb bikes
Design deviates from other sizes of Trek Bikes Rail

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
636mm
Reach
499mm
Stack to Reach Ratio
1.27:1
Seat Tube Length, C-T
500mm
Top Tube Length, Effective/Horizontal Center
665mm
Top Tube Slope
13.7deg
Head Tube Angle
64.9deg
Seat Tube Angle
75deg
Head Tube Length
120mm
Bottom Bracket Drop
29mm
Bottom Bracket Height
348mm
Chainstay Length
447mm
Chainstay Length Horizontal
446.1mm
Front-Center
831.5mm
Front-Center Horizontal
830.9mm
Wheelbase
1277mm
Fork Offset/Rake
43mm
Fork Length (Axle-To-Crown)
537mm
Trail
129.1mm
very high
Mechanical Trail
116.9mm
Wheel Flop
49.6mm
Standover Height
780mm
Tire to Pedal Spindle Distance
With 165 mm cranks
289.4mm
Pedal Spindle to Ground Clearance
With 165 mm cranks
183mm

5 Build

Wheel Size
700C, 29 inch (622mm BSD)
Tire Width
2.6in
Tire Outer Diameter
754.1mm
Bike Length with Tires
2031.1mm
Crank Length
165mm
Handlebar Width
750mm
Stem Length
5cm
Suspension Type
Full suspension
Bar Type
Flat Bar
Fork Travel
170mm
Rear Travel
Unknown
Suspension Sag
25%
Frame Material
Aluminum
Fork Material
Aluminum
Brake Type
Disc
Features
E-bike

Published Sizing Recommendations

Height
186 cm
to
196 cm
PBH
87 cm
to
92 cm
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/electric-mountain-bikes/rail/rail-5/p/30913/?colorCode=greendark_black