2023 (Gen 6) - Neutral / Low Trek Bikes Fuel EX 9.8 XS
Build
650B/27.5 in × 2.5 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
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Geometry
| Stack | 574.1mm |
| Reach | 400.2mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 360mm |
| Top Tube Length, Effective/Horizontal HT Top | 516.2mm |
| Top Tube Slope | 24.3deg |
| Head Tube Angle | 64.5deg |
| Seat Tube Angle | 70.8deg |
| Effective Seat Tube Angle, ETT Center | 78.6deg |
| Head Tube Length | 95mm |
| Bottom Bracket Drop | 25mm |
| Bottom Bracket Height | 330.5mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 434.3mm |
| Front-Center | 711mm |
| Front-Center Horizontal | 710.5mm |
| Wheelbase | 1144.8mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 533mm |
| Trail | 120.8mm very high |
| Mechanical Trail | 109.1mm |
| Wheel Flop | 47mm |
| Standover Height | 716.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 185.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 160.5mm |
9.8 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 711mm |
| Bike Length with Tires | 1855.8mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 150mm |
| Rear Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Carbon/Composite |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/trail-mountain-bikes/fuel-ex/fuel-ex-9-8-gx-axs-gen-6/p/36953/?colorCode=yellow