2021 MASH Alleycat AC-3 54cm
Build
700C/29 in × 30 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 |
| Seat Tube Length, C-C | 500mm |
| Top Tube Length, Effective/Horizontal Center | 540mm |
| Top Tube Slope | -0.2deg |
| Head Tube Angle | 74.5deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 54mm |
| Bottom Bracket Height | 287mm |
| 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, Unknown | 368mm |
| Trail | 63.4mm mid/neutral |
| Mechanical Trail | 61.1mm |
| Wheel Flop | 16.3mm |
| Standover Height | 806mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 57.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 117mm |
AC-3 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 30mm |
| Tire Outer Diameter | 682mm |
| Bike Length with Tires | 1632.9mm |
| 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-3-frameset-scopes.html