2026 Marin San Quentin JR 20 - Yellow/ Orange
MarinDesigned 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, and a Manitou J Unit 80mm air suspension fork meaning more adjustability for lighter shredders. Further updates include a one piece seatpost and saddle to allow for a lower standover and ride height, 1 x 8-speed clutch enabled MicroShift Acolyte drivetrain, tubeless compatible tires kid's specific hydraulic disc brakes.
Technologies

Shimano 1 x 8 Clutch Enabled Drivetrain
One Piece Seatpost and Saddle
Manitou J Unit 80mm Air Fork
- Frame:
- Series 2 6061 Aluminum, 20 Wheels, Disc Specific, 30.9 Post and Dropper Compatible"
- Front Suspension:
- Manitou Junit Sport, 20, 80mm Travel, Air Sprung, Adjustable Rebound, Tapered Steerer. 15x110mm Axle"
- Rim:
- Marin, Double Wall Alloy, 26mm Internal, Tubeless Compatible
- Hub Rear:
- Forged Aluminum, 32H, Disc Specific
- Hub Front:
- Forged Aluminum, 32H, Disc Specific
- Spokes:
- 14g Stainless Steel
- Tires:
- Delium Versatile, 20x2.4", Light Construction, Wire Bead"
- Derailleur Rear:
- MicroSHIFT Acolyte, 8-Speed, Super Short Cage, Clutch
- Shift Lever:
- MicroSHIFT Acolyte, Short-Reach, 8-Speed
- Crankset:
- Forged Alloy, Narrow Wide 30T, 127mm
- Bottom Bracket:
- Sealed Cartridge Bearings, Square Taper
- Chain:
- KMC Z8
- Cassette:
- MicroSHIFT Acolyte, 8-Speed, 11-38T
- Brakes Front:
- Tektro HD-J285 Kid's Specific Hydraulic Disc
- Brakes Rear:
- Tektro HD-J285 Kid's Specific Hydraulic Disc
- Brake Levers:
- Tektro Kid's Specific Short Reach Lever for Hydraulic Brake
- Handlebar:
- Marin Riser, 31.8mm Clamp, 30mm Rise, 580mm Width, 19mm OD Grip Section
- Stem:
- Marin Alloy, 40mm
- Grips:
- Marin MTB, Small Diameter
- Headset:
- FSA No. 57E
- Seatpost:
- Integrated With Saddle
- Saddle:
- Marin One-Piece Saddle/Post Combo, 27.2mm Alloy Post
- Pedals:
- Kids Specific Nylon Pedal