2015 Trek Bikes Fuel EX 8 21.5"
Build
650B/27.5 in × 2.35 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 | 602mm |
| Reach | 468.9mm |
| Stack to Reach Ratio | 1.28:1 |
| Seat Tube Length, Unknown | 521mm |
| Top Tube Length, Effective/Horizontal Unknown | 653mm |
| Head Tube Angle | 68deg |
| Effective Seat Tube Angle, Unknown | 73deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 18.7mm |
| Bottom Bracket Height | 333mm |
| Chainstay Length | 433.1mm |
| Chainstay Length Horizontal | 432.7mm |
| Front-Center | 761.6mm |
| Front-Center Horizontal | 761.4mm |
| Wheelbase | 1194.1mm |
| Fork Offset/Rake | 52.7mm |
| Trail | 85.3mm very high |
| Mechanical Trail | 79mm |
| Wheel Flop | 29.6mm |
| Standover Height | 741.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 239.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 163mm |
8 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.35in |
| Tire Outer Diameter | 703.4mm |
| Bike Length with Tires | 1897.4mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Rear Travel | 120mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.vitalmtb.com/product/guide/Bikes,3/Trek/Fuel-EX-8-27-5,14814