2017 Trek Bikes Fuel 9.9 21.5 in/XL (High)
Build
700C/29 in × 2.4 in
Insights
Somewhat aggressive stack and reach vs trend of full-suspension trail mtb bikes
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 | 510mm |
| Top Tube Length, Effective/Horizontal Center | 657mm |
| Head Tube Angle | 67.7deg |
| Effective Seat Tube Angle, ETT HT Top | 74.7deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 30mm |
| Bottom Bracket Height | 342mm |
| Chainstay Length | 432mm |
| Chainstay Length Horizontal | 431mm |
| Front-Center | 783.6mm |
| Front-Center Horizontal | 783mm |
| Wheelbase | 1214mm |
| Fork Offset/Rake | 51mm |
| Trail | 97.4mm very high |
| Mechanical Trail | 90.1mm |
| Wheel Flop | 34.2mm |
| Standover Height | 747mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 241.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 172mm |
9.9 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1957.9mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 130mm |
| Rear Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Carbon/Composite |
| Fork Material | Aluminum |
| Brake Type | Disc |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/trail-mountain-bikes/fuel-ex/fuel-ex-9-9-29/p/17143/