2018 Diamondback Bicycles Mason 2 Base SM
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
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Geometry
| Stack | 590mm |
| Reach | 421mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, C-T | 420mm |
| Top Tube Length, Effective/Horizontal Center | 590mm |
| Top Tube Slope | 19.1deg |
| Head Tube Angle | 68deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 55mm |
| Bottom Bracket Height | 308.1mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 431.5mm |
| Front-Center | 683.7mm |
| Front-Center Horizontal | 681.5mm |
| Wheelbase | 1113mm |
| Fork Offset/Rake | 51mm |
| Trail | 91.7mm very high |
| Mechanical Trail | 85mm |
| Wheel Flop | 31.9mm |
| Standover Height | 727mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 150.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 138.1mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.8in |
| Tire Outer Diameter | 726.2mm |
| Bike Length with Tires | 1839.2mm |
| Crank Length | 170mm |
| Handlebar Width | 760mm |
| Stem Length | 60mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 4 in to 5 ft 7 in |
Source:https://www.americancycle.com/product/diamondback-mason-2-bike/