2016 Diamondback Bicycles Mason Base XL/21"
Build
650B/27.5 in × 2.8 in
Insights
Average 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 | 622mm |
| Reach | 430mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 350mm |
| Seat Tube Length, Unknown | 533mm |
| Top Tube Length, Actual C-C | 635mm |
| Top Tube Slope | 28.4deg |
| Head Tube Angle | 66.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 2mm |
| Bottom Bracket Height | 361.1mm |
| Chainstay Length | 451mm |
| Chainstay Length Horizontal | 451mm |
| Front-Center | 747mm |
| Front-Center Horizontal | 747mm |
| Wheelbase | 1198mm |
| Fork Offset/Rake | 44mm |
| Trail | 109.9mm very high |
| Mechanical Trail | 100.8mm |
| Wheel Flop | 40.2mm |
| Standover Height | 813mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 208.9mm |
| 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 | 1924.2mm |
| 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