Velotrax | Premium Bikes for Every Ride and Rider
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Alcatraz Jr 24 2025

Alcatraz Jr 24 2025

$ 56.37

$ 225.48

Unavailable
Alcatraz Jr 24 2025

Alcatraz Jr 24 2025

$ 56.37

$ 225.48

Unavailable
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Product Details

Description

We've taken the Alcatraz 1 and scaled it down for smaller riders. Built upon the same tubing as the larger models, it features a 360mm reach, 69 headtube angle, and 72 seattube angle, with 369mm chainstays. A suspension-corrected rigid CrMo fork is designed to handle rough-and-rowdy riding, and a simple and stout single-speed drivetrain and Tektro mechanical disc brakes ensure a fun and safe ride.


Specifications
FRAMESeries 3 6061 Aluminum, 24 Wheels, 135x10mm Horizontal Single Speed Dropouts, 73mm Threaded BB, ISCG 05 Tabs
FRONT SUSPENSIONMarin Series 2 CroMo 24", Suspension Corrected, 100x9mm Dropouts
REAR SUSPENSION-
RIMSMarin Custom Extrusion, 27mm Inner, Pinned Joint
HUB, REARForged Alloy, 135x10mm, Bolt-On, Quad Sealed Bearings, Disc, 32H
HUB, FRONTForged Alloy, Bolt On 3/8" Axle, 100mm Spacing
SPOKES14g Black Stainless Steel
TIRESVee Tire, Rail 24x2.25, LSG Compound, Wire Bead
DERAILLEUR, REAR-
DERAILLEUR, FRONT-
SHIFT LEVER
CRANKSETMarin Forged Alloy, Alloy 32T DM Chainring, 155mm Length
BOTTOM BRACKETExternal Sealed Cartridge Bearings
CHAINKMC HL-1
CASSETTE14T Single Speed Cog
BRAKE, FRONTTektro MD-M280 Mechanical Disc 160mm Rotor
BRAKE, REARTektro MD-M280 Mechanical Disc 160mm Rotor
BRAKE LEVERSTektro CL-330TS Alloy
HANDLEBARMarin Riser, 6061 Double Butted Aluminum, 31.8mm at center bulge, 38mm Rise, 700mm Width, 4 Up, 9 Back
STEMMarin 3D Forged Alloy, 31.8mm clamp, 35mm extension
GRIPSMarin MTN, Closed End
HEADSETFSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2
SEATPOSTMarin Alloy, 30.9mm
SADDLEMarin DJ Saddle
PEDALSAlloy Platform
EXTRASMarin Chain Tension Device
Geometry

Stack525
Reach360
Headtube Angle69
Headtube Length112
Seattube Angle69
Seattube Length320
Toptube Effective
BB Height
BB Drop8mm
Chainstay369
Wheelbase
Standover Height
Fork Offset42
Seatpost Diameter30.9
Handlebar Width700
Stem Length35
Crank Length152

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