2024 BMC Switzerland Roadmachine FOUR 51
Build
700C/29 in × 30 mm
Insights
Average stack and reach vs trend of endurance road bikes
Design deviates from other sizes of BMC Switzerland Roadmachine
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 550mm |
| Reach | 379mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 461mm |
| Top Tube Length, Actual C-C | 537mm |
| Top Tube Slope | 11.9deg |
| Head Tube Angle | 71.4deg |
| Seat Tube Angle | 74.2deg |
| Head Tube Length | 138mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 266mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 408.2mm |
| Front-Center | 596mm |
| Front-Center Horizontal | 591.8mm |
| Wheelbase | 1000mm |
| Fork Offset/Rake | 50mm |
| Fork Length (On-Axis) | 379mm |
| Trail | 62mm mid/neutral |
| Mechanical Trail | 58.8mm |
| Wheel Flop | 18.7mm |
| Standover Height | 762mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 85mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 96mm |
FOUR Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 30mm |
| Tire Outer Diameter | 682mm |
| Bike Length with Tires | 1682mm |
| Crank Length | 170mm |
| Handlebar Width | 420mm |
| Stem Length | 90mm |
| Stem Angle | 8deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 158 cm to 174 cm |
Source:https://bmc-switzerland.com/collections/roadmachine-road-bikes/products/roadmachine-four-bikes-bmc-24-10605-006#product-geo