2016 Diamondback Bicycles Mason Base M/17"
Build
650B/27.5 in × 2.8 in
Insights
Somewhat aggressive stack and reach vs trend of hardtail trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 589mm |
| Reach | 404mm |
| Stack to Reach Ratio | 1.46:1 |
| Seat Tube Length, C-T | 350mm |
| Seat Tube Length, Unknown | 432mm |
| Top Tube Length, Actual C-C | 584mm |
| Top Tube Slope | 26.7deg |
| Head Tube Angle | 66.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 105mm |
| Bottom Bracket Drop | 2mm |
| Bottom Bracket Height | 361.1mm |
| Chainstay Length | 451mm |
| Chainstay Length Horizontal | 451mm |
| Front-Center | 708mm |
| Front-Center Horizontal | 708mm |
| Wheelbase | 1159mm |
| Fork Offset/Rake | 44mm |
| Trail | 109.9mm very high |
| Mechanical Trail | 100.8mm |
| Wheel Flop | 40.2mm |
| Standover Height | 775mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 169.9mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 186.1mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.8in |
| Tire Outer Diameter | 726.2mm |
| Bike Length with Tires | 1885.2mm |
| Crank Length | 175mm |
| Handlebar Width | 740mm |
| Stem Length | 60mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:email from DB support. happy to share. I have it bc I'm an owner of one of these bikes