2022 Marin Bikes Alcatraz Base SHORT
Build
26 in × 2.3 in
Insights
Very upright stack and reach vs trend of bmx/dirt jump bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 575mm |
| Reach | 385mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, Unknown | 320mm |
| Top Tube Length, Effective/Horizontal Center | 600mm |
| Top Tube Slope | 28.9deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 69deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 22mm |
| Bottom Bracket Height | 315.9mm |
| Chainstay Length | 395mm |
| Chainstay Length Horizontal | 394.4mm |
| Front-Center | 643mm |
| Front-Center Horizontal | 642.6mm |
| Wheelbase | 1037mm |
| Fork Offset/Rake | 42mm |
| Trail | 84.7mm very high |
| Mechanical Trail | 79.1mm |
| Wheel Flop | 28.4mm |
| Standover Height | 370mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 135.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 145.9mm |
Base Build
| Wheel Size | 26 inch (559mm BSD) |
| Tire Width | 2.3in |
| Tire Outer Diameter | 675.8mm |
| Bike Length with Tires | 1712.8mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | BMX Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 1 in to 5 ft 9 in |
Source:https://www.marinbikes.com/ww/bikes/2022-alcatraz-frame-kit