2024 MASH Alleycat AC-4 50
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of track/fixed-gear bikes
Design deviates from other sizes of MASH Alleycat
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 492mm |
| Reach | 387mm |
| Stack to Reach Ratio | 1.27:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Center | 510mm |
| Top Tube Length, Actual C-C | 510mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 72.5deg |
| Seat Tube Angle | 76deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 54mm |
| Bottom Bracket Height | 285mm |
| Chainstay Length | 389mm |
| Chainstay Length Horizontal | 385.2mm |
| Front-Center | 559.2mm |
| Front-Center Horizontal | 556.6mm |
| Wheelbase | 941.8mm |
| Fork Offset/Rake | 30mm |
| Fork Length (Axle-To-Crown) | 368mm |
| Trail | 75.4mm high |
| Mechanical Trail | 71.9mm |
| Wheel Flop | 21.6mm |
| Standover Height | 777mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 55.2mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 120mm |
AC-4 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1619.8mm |
| Crank Length | 165mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | N/A |
| Features | Single-speed capable |
Source:https://shop.mashsf.com/mash-ac-4-frameset-raw.html