2022 Mason Cycles Exposure Base 50
Build
650B/27.5 in × 55 mm
Insights
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Mason Cycles Exposure
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 550.2mm |
| Reach | 360mm |
| Stack to Reach Ratio | 1.53:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal HT Top | 520mm |
| Top Tube Slope | 8deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 129mm |
| Bottom Bracket Drop | 77mm |
| Bottom Bracket Height | 270mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 428.1mm |
| Front-Center | 595.3mm |
| Front-Center Horizontal | 590.3mm |
| Wheelbase | 1018.4mm |
| Fork Offset/Rake | 50mm |
| Fork Length (Axle-To-Crown) | 398mm |
| Trail | 76.4mm high |
| Mechanical Trail | 71.5mm |
| Wheel Flop | 25.1mm |
| Standover Height | 765.5mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 78.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 100mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 55mm |
| Tire Outer Diameter | 694mm |
| Bike Length with Tires | 1712.4mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 157 cm to 168 cm |
Source:Mason Cycles