2025 Mason Cycles Exposure Base 48CM
Build
700C/29 in × 50 mm
Insights
Average 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 | 536.1mm |
| Reach | 359.9mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, C-T | 480mm |
| Seat Tube Length, C-C | 432.3mm |
| Top Tube Length, Effective/Horizontal Center | 515.9mm |
| Top Tube Length, Actual C-C | 497.8mm |
| Top Tube Slope | 11deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 77mm |
| Bottom Bracket Height | 284mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 428.1mm |
| Front-Center | 590mm |
| Front-Center Horizontal | 584.9mm |
| Wheelbase | 1013mm |
| Fork Offset/Rake | 50mm |
| Fork Length (Axle-To-Crown) | 398mm |
| Trail | 81.6mm very high |
| Mechanical Trail | 76.4mm |
| Wheel Flop | 26.8mm |
| Standover Height | 721mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 64mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 119mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 50mm |
| Tire Outer Diameter | 722mm |
| Bike Length with Tires | 1735mm |
| Crank Length | 165mm |
| Handlebar Width | 40mm |
| Stem Length | 70mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 151 cm to 160 cm |
Source:https://masoncycles.cc/products/exposure-frameset