2024 BOMA Evolution IV Base M-500
Build
700C/29 in × 30 mm
Insights
Average stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 540mm |
| Reach | 380mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Center | 532mm |
| Top Tube Slope | 6.5deg |
| Head Tube Angle | 72.3deg |
| Seat Tube Angle | 74.3deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 271mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 409.1mm |
| Front-Center | 582mm |
| Front-Center Horizontal | 577mm |
| Wheelbase | 986mm |
| Fork Offset/Rake | 45mm |
| Trail | 61.6mm mid/neutral |
| Mechanical Trail | 58.7mm |
| Wheel Flop | 17.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 101mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 30mm |
| Tire Outer Diameter | 682mm |
| Bike Length with Tires | 1668mm |
| Handlebar Width | 395mm |
| Stem Length | 100mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:http://www.boma.jp/products/frame_set/evolution4/