2020 BMC Switzerland Fourstroke Base
- Design
- Flat Bar, Full suspension
- Frame
- Carbon/Composite
- Fork
- Aluminum
- Suspension
- 120mm fork travel
- Features
- Disc brake
Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
S | M | L | XL | |
Stack | 580mm | 590mm | 600mm | 615mm |
Reach | 423mm | 445mm | 465mm | 485mm |
Stack to Reach Ratio | 1.37:1 | 1.33:1 | 1.29:1 | 1.27:1 |
Seat Tube Length, C-T | 420mm | 440mm | 480mm | 510mm |
Top Tube Length, Effective/Horizontal HT Top | 582mm | 607mm | 630mm | 654mm |
Top Tube Slope | 18.2deg | 16.5deg | 13deg | 11.2deg |
Head Tube Angle | 67.5deg | 67.5deg | 67.5deg | 67.5deg |
Seat Tube Angle | 75.6deg | 75.6deg | 75.6deg | 75.6deg |
Head Tube Length | 96mm | 107mm | 117mm | 134mm |
Bottom Bracket Drop | 44mm | 44mm | 44mm | 44mm |
Bottom Bracket Height | 324.2mm | 324.2mm | 324.2mm | 324.2mm |
Chainstay Length | 429mm | 429mm | 429mm | 429mm |
Chainstay Length Horizontal | 426.7mm | 426.7mm | 426.7mm | 426.7mm |
Front-Center | 700mm | 726mm | 750mm | 777mm |
Front-Center Horizontal | 702.3mm | 728.3mm | 753.3mm | 779.3mm |
Wheelbase | 1129mm | 1155mm | 1180mm | 1206mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm |
Fork Length (Axle-To-Crown) | 506mm | 506mm | 506mm | 506mm |
Trail | 104.9mm very high | 104.9mm very high | 104.9mm very high | 104.9mm very high |
Mechanical Trail | 96.9mm | 96.9mm | 96.9mm | 96.9mm |
Wheel Flop | 37.1mm | 37.1mm | 37.1mm | 37.1mm |
Tire to Pedal Spindle | 161.9mm 170 mm cranks | 182.9mm 175 mm cranks | 206.9mm 175 mm cranks | 233.9mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 154.2mm 170 mm cranks | 149.2mm 175 mm cranks | 149.2mm 175 mm cranks | 149.2mm 175 mm cranks |
Base Build
S | M | L | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in | 2.25in |
Tire Outer Diameter | 736.3mm | 736.3mm | 736.3mm | 736.3mm |
Bike Length with Tires | 1865.3mm | 1891.3mm | 1916.3mm | 1942.3mm |
Crank Length | 170mm | 175mm | 175mm | 175mm |
Handlebar Width | 720mm | 720mm | 720mm | 720mm |
Stem Length | 50mm | 60mm | 60mm | 70mm |
Stem Angle | -5deg | -5deg | -5deg | -5deg |
Published Sizing Recommendations
Height | — | 172 cm to 182 cm | 180 cm to 188 cm | 188 cm to |
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
Full-suspension Cross-country MTBSource:https://www.bmc-switzerland.com/fourstroke-01-one-301871.html