2025 Mason Cycles ISO 2 27.5 50
Build
650B/27.5 in × 2.8 in
Insights
Somewhat upright stack and reach vs trend of off-road touring bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 623.8mm |
| Reach | 379.4mm |
| Stack to Reach Ratio | 1.64:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal HT Top | 560.5mm |
| Top Tube Slope | 15.5deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 288.1mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 438.6mm |
| Front-Center | 648mm |
| Front-Center Horizontal | 643.7mm |
| Wheelbase | 1082.3mm |
| Fork Offset/Rake | 50mm |
| Fork Length (Axle-To-Crown) | 483mm |
| Trail | 85.8mm very high |
| Mechanical Trail | 80.1mm |
| Wheel Flop | 28.7mm |
| Standover Height | 810mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 114.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 118.1mm |
27.5 Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.8in |
| Tire Outer Diameter | 726.2mm |
| Bike Length with Tires | 1808.5mm |
| Crank Length | 170mm |
| Handlebar Width | 460mm |
| Stem Length | 80mm |
| Suspension Type | Rigid, suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://masoncycles.cc/products/insearchof-shimano