Alcatraz Frame Kit

2021 Marin Alcatraz frame kit profile.

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  • Price: $439.00*
  • Wheel Size: 26"
  • Frame: Aluminum
  • Size Range: One Size

Manufacturer’s suggested retail price may not include additional shipping or preparation charges. Please contact your local Marin dealer for a quote.

DIRT JUMPS

SLOPESTYLE

PUMP TRACK

SKATE PARK

The Alcatraz allows the rider to follow in Matt Jones’ footsteps to build and personalize the best dirt jump bike possible. At home boosting your local 6 pack, ripping up the pump track, or hitting the local skate park the Alcatraz has what you need to take care of business.

Specifications

  • Frame

    Series 3 6061 Aluminum Frame, 26” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs

  • Headset

    FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”

  • Extras

    Marin Chain Tension Device

  • Extras

    Marin MTB Seat Clamp, Bolt Type

Geometry

Alcatraz Frame Kit geometry diagram
ONE SIZE
Stack 575.5
Reach 401.84
Head Tube Angle 69°
Head Tube Length 115
Seat Tube Angle 71°
Seat Tube Length 320
Top Tube Effective 600
BB Height 317
BB Drop 22
Chain Stay 395
Wheel Base 1053.68
Stand Over Height 650
Fork Offset 42

All lengths in millimeters

Technology

SERIES 3 ALUMINUM FRAME

The Alcatraz features a 6061 Series 3 alloy frame, with a burly double butted tubesets for the best ride quality and stiffness, tapered headtubes for maximum strength on big jumps, and horizontal drop out with slotted IS disc brake tabs.

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Marin Series 3 aluminum decal on the Alcatraz chainstay

SHORT CHAINSTAYS

We have optimized the chainstay length of the Alcatraz to make sure you can have the shortest chainstays possible, giving you the ability to pop a wheelie or manual anywhere at anytime.

Rear dropout and brake image of the Marin Alcatraz

135X10MM HORIZONTAL DROPOUTS

The Alcatraz features 135x10mm horizontal dropouts — the standard in dirt jump technology for axle and dropout strength.

Front 3/4 view of the Marin Alcatraz

DIRT JUMP SPECIFIC SUSPENSION FORK

100mm travel X-Fusion Slant DJ-specific fork with air spring, compression and rebound damping, and tapered alloy steerer tube.

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