2021 Giant Bicycles Fathom 2
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 130mm fork travel
- Features
- Disc brake
Geometry
S | M | L | XL | |
Stack | 622mm | 622mm | 631mm | 640mm |
Reach | 425mm | 445mm | 470mm | 490mm |
Stack to Reach Ratio | 1.46:1 | 1.4:1 | 1.34:1 | 1.31:1 |
Seat Tube Length, C-T | 380mm | 430mm | 465mm | 495mm |
Top Tube Length, Effective/Horizontal Unknown | 592mm | 612mm | 639mm | 662mm |
Head Tube Angle | 66deg | 66deg | 66deg | 66deg |
Effective Seat Tube Angle, Seat Tube Top | 75deg | 75deg | 75deg | 75deg |
Head Tube Length | 95mm | 95mm | 105mm | 115mm |
Bottom Bracket Drop | 60mm | 60mm | 60mm | 60mm |
Bottom Bracket Height | 298mm | 298mm | 298mm | 298mm |
Chainstay Length | 435mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 430.8mm | 430.8mm | 430.8mm | 430.8mm |
Front-Center | 725.6mm | 745.6mm | 774.5mm | 798.4mm |
Front-Center Horizontal | 723.2mm | 743.2mm | 772.2mm | 796.2mm |
Wheelbase | 1154mm | 1174mm | 1203mm | 1227mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm |
Trail | 111.3mm very high | 111.3mm very high | 111.3mm very high | 111.3mm very high |
Mechanical Trail | 101.6mm | 101.6mm | 101.6mm | 101.6mm |
Wheel Flop | 41.3mm | 41.3mm | 41.3mm | 41.3mm |
Standover Height | 712mm | 726mm | 746mm | 771mm |
Tire to Pedal Spindle | 202.6mm 165 mm cranks | 217.5mm 170 mm cranks | 246.5mm 170 mm cranks | 270.4mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 133mm 165 mm cranks | 128mm 170 mm cranks | 128mm 170 mm cranks | 128mm 170 mm cranks |
2 Build
S | M | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Outer Diameter | 716.1mm | 716.1mm | 716.1mm | 716.1mm |
Bike Length with Tires | 1870.1mm | 1890.1mm | 1919.1mm | 1943.1mm |
Crank Length | 165mm | 170mm | 170mm | 170mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm |
Stem Length | 40mm | 40mm | 50mm | 50mm |
Published Sizing Recommendations
Height | 163 cm to 182 cm | 181 cm to 180 cm | 179 cm to 188 cm | 187 cm to 198 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Trail MTBSource:https://www.giant-bicycles.com/us/fathom-2-2021