2025 A-Frame Cycles Alltrack Base 51
Build
700C/29 in × 32 mm
Insights
Very upright stack and reach vs trend of track/fixed-gear bikes
Design deviates from other sizes of A-Frame Cycles Alltrack
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 547.9mm |
| Reach | 379.5mm |
| Stack to Reach Ratio | 1.44:1 |
| Seat Tube Length, C-T | 510mm |
| Top Tube Length, Effective/Horizontal Unknown | 527mm |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 124mm |
| Bottom Bracket Drop | 60mm |
| Bottom Bracket Height | 283mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 410.6mm |
| Front-Center | 578mm |
| Front-Center Horizontal | 574.9mm |
| Wheelbase | 985.5mm |
| Fork Offset/Rake | 35mm |
| Fork Length (Axle-To-Crown) | 382mm |
| Trail | 74.7mm high |
| Mechanical Trail | 71mm |
| Wheel Flop | 21.9mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 70mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 118mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 32mm |
| Tire Outer Diameter | 686mm |
| Bike Length with Tires | 1671.5mm |
| Crank Length | 165mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Titanium |
| Fork Material | Carbon/Composite |
| Brake Type | Unknown |
Source:https://aframecycles.com/products/a-frame-alltrack-frameset-pre-order