2021 Trek Bikes Fuel EX 9.8 S 15.5 (27.5" wheel) Low

Build

650B/27.5 in × 2.6 in

Insights

Somewhat aggressive stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Trek Bikes Fuel EX
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
568mm
Reach
420mm
Stack to Reach Ratio
1.35:1
Seat Tube Length, C-T
395mm
Top Tube Length, Effective/Horizontal HT Top
567mm
Top Tube Slope
19.7deg
Head Tube Angle
66.5deg
Seat Tube Angle
75.5deg
Head Tube Length
100mm
Bottom Bracket Drop
14mm
Bottom Bracket Height
344mm
Chainstay Length
436mm
Chainstay Length Horizontal
435.8mm
Front-Center
707.4mm
Front-Center Horizontal
707.2mm
Wheelbase
1143mm
Fork Offset/Rake
43mm
Trail
108.8mm
very high
Mechanical Trail
99.8mm
Wheel Flop
39.8mm
Standover Height
708mm
Tire to Pedal Spindle Distance
With 170 mm cranks
179.3mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
174mm

9.8 Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.6in
Tire Outer Diameter
716.1mm
Bike Length with Tires
1859.1mm
Crank Length
170mm
Handlebar Width
780mm
Stem Length
35mm
Suspension Type
Full suspension
Bar Type
Flat Bar
Fork Travel
140mm
Rear Travel
Unknown
Suspension Sag
Unknown
Frame Material
Carbon/Composite
Fork Material
Unknown
Brake Type
Disc

Published Sizing Recommendations

Height
153 cm
to
166.5 cm
PBH
72 cm
to
79 cm
Source:https://www.trekbikes.com/ca/en_CA/bikes/mountain-bikes/trail-mountain-bikes/fuel-ex/fuel-ex-9-8-xt/p/33408/