2020 Black Mountain Cycles Monster Cross Disc 650b S (47cm)
Build
650B/27.5 in × 47 mm
Insights
Very upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Black Mountain Cycles Monster Cross Disc
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 589mm |
| Reach | 364mm |
| Stack to Reach Ratio | 1.62:1 |
| Seat Tube Length, C-T | 470mm |
| Top Tube Length, Effective/Horizontal Center | 540mm |
| Top Tube Slope | 15.5deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 267mm |
| Chainstay Length | 438mm |
| Chainstay Length Max | 438mm |
| Chainstay Length Horizontal | 432mm |
| Chainstay Length Horizontal Max | 432mm |
| Front-Center | 599mm |
| Front-Center Horizontal | 598mm |
| Wheelbase | 1030mm |
| Wheelbase Max | 1030mm |
| Fork Offset/Rake | 55mm |
| Fork Length (On-Axis) | 410mm |
| Trail | 55.4mm mid/neutral |
| Mechanical Trail | 52.6mm |
| Wheel Flop | 16.7mm |
| Standover Height | 778mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 90mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 97mm |
650b Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 47mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1708mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 4 in to 5 ft 8 in |
Source:https://blackmtncycles.com/tech-info/mcd-frame-tech/