2024 MASH Alleycat AC-4 54
Build
700C/29 in × 28 mm
Insights
Somewhat aggressive stack and reach vs trend of track/fixed-gear bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 521mm |
| Reach | 405mm |
| Stack to Reach Ratio | 1.29:1 |
| Seat Tube Length, C-T | 540mm |
| Top Tube Length, Effective/Horizontal Center | 540mm |
| Top Tube Length, Actual C-C | 540mm |
| Top Tube Slope | 0deg |
| Head Tube Angle | 74.5deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 54mm |
| Bottom Bracket Height | 285mm |
| Chainstay Length | 389mm |
| Chainstay Length Horizontal | 385.2mm |
| Front-Center | 568.2mm |
| Front-Center Horizontal | 565.6mm |
| Wheelbase | 950.9mm |
| Fork Offset/Rake | 30mm |
| Fork Length (Axle-To-Crown) | 368mm |
| Trail | 62.9mm mid/neutral |
| Mechanical Trail | 60.6mm |
| Wheel Flop | 16.2mm |
| Standover Height | 806mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 64.2mm |
| 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 | 1628.9mm |
| 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