Marin Alcatraz 2 Frame Kit 2025
2025 Mountain
Estimate price |
697$
Bike details
Overview
Key information split into simple groups.
Frame summary
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Frame Aluminum
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Series 3 6061 Aluminum, 26” Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Drivetrain
Bottom Bracket
BSA, 73mm, threaded
Cockpit
Headset
FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | Short | Long |
|---|---|---|
| Stack Reach Ratio | 1.494 mm | 1.349 mm |
| Bottom Bracket Height | 317 mm | 317 mm |
| Front Center | 643 mm | 689 mm |
| Rake | 42 mm | 42 mm |
| Trail | 87 mm | 88 mm |
| Stack | 575 mm | 580 mm |
| Reach | 385 mm | 430 mm |
| Top Tube Length | 600 mm | 646 mm |
| Seat Tube Angle | 69 ° | 69 ° |
| Seat Tube Length | 320 mm | 320 mm |
| Head Tube Angle | 69 ° | 69 ° |
| Head Tube Length | 115 mm | 120 mm |
| Chainstay Length | 395 mm | 395 mm |
| Wheelbase | 1037 mm | 1083 mm |
| Bottom Bracket Drop | 22 mm | 22 mm |
| Standover Height | 370 mm | 400 mm |
| Wheels | 26" | 26" |