2021 Marin Bikes Alcatraz Base
- Category
- BMX/Dirt Jump
- Design
- Moto/Klunker/Riser Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 100mm fork travel
- Features
- Disc brake, Single-speed capable
Geometry
ONE SIZE | |
Stack | 575.5mm |
Reach | 401.8mm |
Stack to Reach Ratio | 1.43:1 |
Seat Tube Length, C-T | 320mm |
Top Tube Length, Effective/Horizontal Center | 600mm |
Top Tube Slope | 28.3deg |
Head Tube Angle | 69deg |
Seat Tube Angle | 71deg |
Head Tube Length | 115mm |
Bottom Bracket Drop | 22mm |
Bottom Bracket Height | 314.7mm |
Chainstay Length | 395mm |
Chainstay Length Horizontal | 394.4mm |
Front-Center | 659.7mm |
Front-Center Horizontal | 659.3mm |
Wheelbase | 1053.7mm |
Fork Offset/Rake | 42mm |
Trail | 84.2mm very high |
Mechanical Trail | 78.6mm |
Wheel Flop | 28.2mm |
Standover Height | 650mm |
Tire to Pedal Spindle | 153mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 144.7mm 170 mm cranks |
Base Build
ONE SIZE | |
Wheel Size | 26 in 559 mm BSD |
Tire Width | 2.25in |
Tire Outer Diameter | 673.3mm |
Bike Length with Tires | 1727mm |
Crank Length | 170mm |
Handlebar Width | 780mm |
Stem Length | 35mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
BMX/Dirt JumpSource:https://www.marinbikes.com/bikes/2021-alcatraz