2021 Trek Bikes 820 Base
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Suspension
- 80mm fork travel
Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry | Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
xs | s | small | ml | l | xl | |
Seat Tube Length, C-T | 330mm | 406mm | — | 457mm | 495mm | 533mm |
Seat Tube Length, Unknown | — | — | 406mm | — | — | — |
Top Tube Length, Effective/Horizontal Center | 524mm | 550mm | 550mm | 565mm | 580mm | 590mm |
Head Tube Angle | 70.5deg | 70.5deg | 70.5deg | 70.5deg | 70.5deg | 70.5deg |
Seat Tube Angle | 74deg | 73.5deg | 73.5deg | 73.5deg | 73deg | 73deg |
Head Tube Length | 110mm | 110mm | 110mm | 130mm | 150mm | 170mm |
Bottom Bracket Drop | 43.3mm | 39.3mm | 42mm | 37.3mm | 37.3mm | 37.3mm |
Bottom Bracket Height | 287mm | 291mm | 288.3mm | 293mm | 293mm | 293mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 427.8mm | 428.2mm | 427.9mm | 428.4mm | 428.4mm | 428.4mm |
Front-Center | 592.8mm | 613.1mm | 613.5mm | 629.7mm | 640.7mm | 651.7mm |
Front-Center Horizontal | 591.2mm | 611.8mm | 612.1mm | 628.6mm | 639.6mm | 650.6mm |
Wheelbase | 1019mm | 1040mm | 1040mm | 1057mm | 1068mm | 1079mm |
Fork Offset/Rake | 40mm | 40mm | 40mm | 40mm | 40mm | 40mm |
Trail | 74.5mm high | 74.5mm high | 74.5mm high | 74.5mm high | 74.5mm high | 74.5mm high |
Mechanical Trail | 70.3mm | 70.3mm | 70.3mm | 70.3mm | 70.3mm | 70.3mm |
Wheel Flop | 23.5mm | 23.5mm | 23.5mm | 23.5mm | 23.5mm | 23.5mm |
Standover Height | 705mm | 738mm | 738mm | 772mm | 799mm | 827mm |
Tire to Pedal Spindle | 92.5mm 170 mm cranks | 112.8mm 170 mm cranks | 113.2mm 170 mm cranks | 129.4mm 170 mm cranks | 140.4mm 170 mm cranks | 151.4mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 117mm 170 mm cranks | 121mm 170 mm cranks | 118.3mm 170 mm cranks | 123mm 170 mm cranks | 123mm 170 mm cranks | 123mm 170 mm cranks |
Base Build
xs | s | small | ml | l | xl | |
Wheel Size | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD | 26 in 559 mm BSD |
Tire Width | 2in | 2in | 2in | 2in | 2in | 2in |
Tire Outer Diameter | 660.6mm | 660.6mm | 660.6mm | 660.6mm | 660.6mm | 660.6mm |
Bike Length with Tires | 1679.6mm | 1700.6mm | 1700.6mm | 1717.6mm | 1728.6mm | 1739.6mm |
Crank Length | — | — | 170mm | — | — | — |
Handlebar Width | — | — | 660mm | — | — | — |
Stem Length | — | — | 80mm | — | — | — |
Stem Angle | — | — | 7deg | — | — | — |
Published Sizing Recommendations
Height | — | — | 155 cm to 165 cm | — | — | — |
Source:https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/cross-country-mountain-bikes/820/820/p/17027/