Alcatraz Frame Kit
![2020 Marin Alcatraz frame kit profile.](https://s3.us-east-1.amazonaws.com/craft-marinbikes/images/2020/bikes/hero/_bikeHero320Wide/2020_Alcatraz_Frame_Kit_Color.jpg)
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Specifications
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Frame
Series 3 6061 Aluminum Frame, 26” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs
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Headset
FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
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Extras
Marin Chain Tension Device
Specifications, pricing, and availability are subject to change without notice.
Geometry
![Alcatraz Frame Kit geometry diagram](https://s3.us-east-1.amazonaws.com/craft-marinbikes/images/2020/bikes/geometry/_bikeGeometry320Wide/21_MRN_GEO_ALL_HARDTAILS_1416px.jpg)
ONE SIZE | |
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STACK | 575.5 |
REACH | 401.84 |
HEADTUBE ANGLE | 60° |
HEADTUBE LENGTH | 115 |
SEATTUBE ANGLE (EFFECTIVE) | 71° |
SEATTUBE LENGTH | 320 |
TOPTUBE (EFFECTIVE) | 600 |
BOTTOM BRACKET HEIGHT | 317 |
BOTTOM BRACKET DROP | 22 |
CHAINSTAY | 395 |
WHEELBASE | 1053.68 |
STANDOVER HEIGHT | 650 |
FORK OFFSET | 42 |
All lengths in millimeters