Marin 2026 San Quentin 20
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Your bike will arrive fully assembled and ready to ride. No tools or extra setup required!
Marin 2026 San Quentin 20
We took our Matt Jones-inspired Marin San Quentin and shrunk it down to fit 20” wheels. It's the perfect bike for kids who are ready for their first proper, hardcore hardtail mountain bike.
The Marin San Quentin 20”, 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 20” will feel just like a ‘grown up’ mountain bike to your little ripper, built with a stout Series 2 aluminum frame, 20” wheels, a fully adjustable kid specific Manitou J-Unit suspension fork, 8-speed Shimano drivetrain and kid’s specific hydraulic disc brakes.
Specifications
Marin 2026 San Quentin 24
Frame
Size: 20"Colour: Yellow Fade
Frame: Series 2 6061 Aluminum, 20” Wheels, Disc Specific, 30.9 Post and Dropper Compatible
Fork: Manitou Junit Sport, 20", 80mm Travel, Air Sprung, Adjustable Rebound, Tapered Steerer. 15x110mm Axle
Shock:
Drivetrain
Crankset: Forged Alloy, Narrow Wide 30T, 127mmPedals:
Chain: KMC Z8
Bottom Bracket: Sealed Cartridge Bearings, Square Taper
Rear Derailleur: Shimano Altus
Front Derailleur:
Derailleur Shifter: Shimano Altus SL-M315, 8-Speed
Freewheel/Cassette: Shimano 8-speed, 11-32T
Braking System
Brakes: [F] and [R] Tektro HD-J285 Kid's Specific Hydraulic DiscBrake Levers: Tektro Kid's Specific Short Reach Lever for Hydraulic Brake
Wheels
Tyres: [F] and [R] Delium Versatile, 20”x2.4”, Light Construction, Wire BeadWheels/Rims: [F] and [R] Marin, Double Wall Alloy, 26mm Internal, Tubeless Compatible
Hubs: [F] and [R] Forged Aluminum Alloy, Disc, 32H
Other
Handlebar: Marin Riser, 31.8mm Clamp, 30mm Rise, 580mm Width, 19mm OD Grip SectionStem: Marin Alloy, 40mm
Seat Post: Integrated With Saddle
Saddle: Marin One-Piece Saddle/Post Combo, 27.2mm Alloy Post
Geometry
Marin 2026 San Quentin 20
| ONE SIZE | |
|---|---|
| Stack | 499 |
| Reach | 310 |
| Head Tube Angle | 65° |
| Head Tube Length | 90 |
| Seat Tube Angle | 75° |
| Seat Tube Length | 308 |
| Top Tube Effective | 443.4 |
| BB Height | 260 |
| BB Drop | 10 |
| Chain Stay | 340 |
| Wheel Base | 922 |
| Stand Over Height | 540 |
| Fork Offset | 40 |
| SeatPost Diameter | 30.9 |
| Handlebar Width | 590 |
| Stem Length | 35 |
| Crank Length | 140 |
All lengths in millimeters
Velo City does not carry all goods available for purchase online. Time for collection may vary depending if the products are required to be sourced from off-site warehouses. The process can take a few days (normally anywhere between 2-10 working days). If you are worried about a delay please feel free to email or call us.
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