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San Quentin 24"

San Quentin 24 profile.

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  • Price: $999.00*
  • Suspension: RockShox Judy Silver TK, 100mm Travel, Solo Air, 110x15mm Maxle Stealth
  • Wheel Size : 24"
  • Frame: Aluminum
  • Size Range: One Size
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Manufacturer’s suggested retail price may not include additional shipping or preparation charges. Please contact your local Marin dealer for a quote.

We took our Matt Jones-inspired Marin San Quentin and shrunk it down to fit 24” wheels. It's the perfect bike for kids who are ready for their first proper, hardcore hardtail mountain bike.

The Marin San Quentin 24”, just like the big kid’s version, shreds the boundaries of the mountain bike genres - doing it all with a huge splash of big air, speed and style.

Designed with the input of freeride legend Matt Jones, the San Quentin takes the DNA of our dirt-jumping Alcatraz and mutates it into a go-further and faster all-round, hardcore hardtail.

The San Quentin 24” will feel just like a ‘grown up’ mountain bike to your little ripper, built with a stout Series 2 aluminum frame, 24” wheels, an RockShox suspension fork, 9-speed microSHIFT drivetrain and kid’s specific hydraulic disc brakes.


  • Frame

    Series 2 6061 Aluminum, 24” Wheels, Disc Specific, 135mm Dropouts

  • Front Suspension

    RockShox Judy Silver TK, 100mm Travel, Solo Air, 110x15mm Maxle Stealth

  • Rim

    Marin, Double Wall Alloy, 27mm Internal

  • Hub Rear

    Forged Aluminum, 32H, Disc Specific

  • Hub Front

    Forged Aluminum, 32H, Disc Specific

  • Spokes

    14g Stainless Steel

  • Tires

    Vee Tire Co. Crown Gem, 24”x2.6”, Wire Bead

  • Derailleur Rear

    microSHIFT Advent 9-Speed

  • Derailleur Front


  • Shift Lever

    microSHIFT Advent 9-Speed

  • Crankset

    Forged Alloy, Narrow Wide 30T, 152mm

  • Bottom Bracket

    Sealed Cartridge Bearings, Square Taper

  • Chain

    KMC X9

  • Cassette

    microSHIFT 9-Speed, 11-46T

  • Brakes Front

    Tektro HDM275 Hydraulic, 160mm Rotor

  • Brakes Rear

    Tektro HDM275 Hydraulic, 160mm Rotor

  • Brake Levers

    Tektro Hydraulic

  • Handlebar

    Marin Riser, 31.8 clamp, 30mm Rise, 590mm Width

  • Stem

    Marin Alloy, 35mm

  • Grips

    Marin MTB

  • Headset

    FSA No. 57E

  • Seatpost

    Marin Alloy, 30.9mm

  • Saddle

    Marin Kids MTB

  • Pedals

    Kids Specific Nylon Pedal

Specifications, pricing, and availability are subject to change without notice.


San Quentin 24" geometry diagram
Stack 541
Reach 345
Head Tube Angle 65°
Head Tube Length 90
Seat Tube Angle 75°
Seat Tube Length 321
Top Tube Effective 490
BB Height 292
BB Drop 30
Chain Stay 380
Wheel Base 1009
Stand Over Height 588
Fork Offset 42
SeatPost Diameter 30.9
Handlebar Width 590
Stem Length 35
Crank Length 152

All lengths in millimeters



San Quentin 24” and 20” both feature a Series 2 aluminum frame, with a tapered headtube, 3D forged dropouts, IS brake mounts, semi-internal cable routing and 135mm open dropouts.

Learn More
Young rider jumping on a San Quentin 24".


Taking cues from the Alcatraz, as well as the full-size San Quentin lineup, the San Quentin 24” and 20” proved all the benefits of DJ style, with massive standover, slick frame tubes, and a hot paint job.

San Quentin 24" headtube detail.


A slack headtube angle paired with a steep seat tube angle creates a ride that will fly uphill, yet descend like it’s on rails. The balanced rider position is puts the rider weight between the wheels for steady climbing and handling on flats, while the slack front end helps to add higher speed stability through turns and rough patches.

microSHIFT Advent derailleur detail.


Modern 1x drivetrains, just like the larger San Quentins, give the rider the benefits of shifting simplicity and chain retention.

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