Marin Bikes
Marin Bikes

Marin Alcatraz Frame 2021

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Item #: FR001053
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Marin Alcatraz Frame 2021

Jump and pump around your favorite dirt jumps

The Marin Alcatraz Dirt Jump frame was designed hand in hand with slopestyle superstar Matt Jones. The frame features modern dirt jump geometry including a short chain-stay length and steep headtube-angle which makes the bike super easy to trick and maneuver. The 6061 Aluminum frame is overbuilt to handle the abusive demands of slopestyle riding. The horizontal dropouts with tensioners make a single-speed setup simple and easy. Marin designed the Alcatraz with the intent of creating the best dirt jump hardtail you’ve ever ridden.

Review

VitalMTB - " This hardtail frame features sliding dropouts for your single-speed builds but it also has a tab should you wish to run a derailleur. This bad boy retails for $1,100 and you could be sending it like Matt."

PinkBike - "Marin's return to form is welcomed and the iconic brand has released and produced plenty of great bikes recently. Their new Alcatraz has been designed and developed with input from Matt Jones, the UK dirt jump and slopestyle star."

Bike Magazine - " The Alcatraz is a 6061 alloy single-speed or multi-speed compatible 26-inch hardtail worthy of the custom treatment. But to bring it to the masses, Marin decked it out for 2019 with a sweet but smart build kit."

Features

  • Stiff aluminum frame overbuilt to handle the abuse of dirt jump riding
  • Chain tensioners keep the single speed chain tight
  • Short chain-stays give the bike a quick and snappy feel
  • Steep head angle makes the bike easy to trick and spin
SPECIFICATIONS
Frame Series 3 6061 Aluminum Frame, 26” Wheels, 135x10mm Horizontal Dropouts, Single Speed or Geared
Wheel Size 26"
Fork 100mm recommended
Headset FSA Orbit, Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
Headtube Diameter Tapered
Bottom Bracket 68/73mm threaded
Seatpost 30.9mm
Seat Clamp Marin Single Bolt
Dropout Style Horizontal with chain tensioners
Cable routing External
Intended Use Dirt Jump, Pumptrack

Note: Components are subject to change without notice.

Geometry and Size Guide

Size One Size
A: Seat Tube Length 320
B: Effective Top Tube 600
C: Stack 575.5
D: Reach 402
E: BB Height 317
F: BB Drop 22
G: Head Tube Length 115
H: Head Tube Angle 69 °
I: Seat Tube Angle 71 °
J: Standover Height 650
K: Chainstay Length 395
L: Wheelbase 1053.68
Crank Arm Length 170 mm
Stem Length 35 mm
Handlebar Width 780 mm
Suggested Rider Height
Frame Size One Size
Size One Size
A: Seat Tube Length 12.6
B: Effective Top Tube 23.6
C: Stack 22.7
D: Reach 15.8
E: BB Height 12.5
F: BB Drop 0.9
G: Head Tube Length 4.5
H: Head Tube Angle 69.0 °
I: Seat Tube Angle 71.0 °
J: Standover Height 25.6
K: Chainstay Length 15.6
L: Wheelbase 41.5
Crank Arm Length 170 mm
Stem Length 35 mm
Handlebar Width 780 mm
Suggested Rider Height
Frame Size One Size
 

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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

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