2020 Trek Bikes Top Fuel 8 XL/21.5 Low

Build

700C/29 in × 2.4 in

Insights

Average stack and reach vs trend of full-suspension cross-country mtb bikes
Design deviates from other sizes of Trek Bikes Top Fuel
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
612mm
Reach
487mm
Stack to Reach Ratio
1.26:1
Seat Tube Length, C-T
521mm
Top Tube Length, Effective/Horizontal HT Top
651mm
Top Tube Slope
9.9deg
Head Tube Angle
67.5deg
Seat Tube Angle
75deg
Head Tube Length
110mm
Bottom Bracket Drop
36mm
Bottom Bracket Height
336mm
Chainstay Length
435mm
Chainstay Length Horizontal
433.5mm
Front-Center
774.3mm
Front-Center Horizontal
773.5mm
Wheelbase
1207mm
Fork Offset/Rake
44mm
Trail
106.5mm
very high
Mechanical Trail
98.3mm
Wheel Flop
37.6mm
Standover Height
765mm
Tire to Pedal Spindle Distance
With 170 mm cranks
232.4mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
166mm

8 Build

Wheel Size
700C, 29 inch (622mm BSD)
Tire Width
2.4in
Tire Outer Diameter
743.9mm
Bike Length with Tires
1950.9mm
Stem Length
7cm
Suspension Type
Full suspension
Bar Type
Flat Bar
Fork Travel
120mm
Rear Travel
Unknown
Suspension Sag
Unknown
Frame Material
Aluminum
Fork Material
Unknown
Brake Type
Disc

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/cross-country-mountain-bikes/top-fuel/top-fuel-8/p/28012/?colorCode=black_red