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 kids 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, an SR Suntour XCM suspension fork, 8-speed Shimano drivetrain and kids specific hydraulic disc brakes. TECHNOLOGY SERIES 2 ALUMINUM FRAME: 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. DIRT JUMP INSPIRED FRAME STYLE: 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. MODERN TRAIL GEOMETRY: A slack headtube angle paired with a steep seat tube angle creates a ride that will fly uphill, yet descend like its 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. 1X WIDE-RANGE DRIVETRAINS: Modern 1x drivetrains, just like the larger San Quentins, give the rider the benefits of shifting simplicity and chain retention. SPECIFICATIONS Frame: Series 2 6061 Aluminum, 20 Wheels, Disc Specific, 135mm Dropouts Front Suspension: SR Suntour XCM 24 BOOST, 80mm Travel, 110mm Axle Spacing Rim: Marin, Double Wall Alloy, 25mm Internal Hub Rear: Forged Aluminum, 32H, Disc Specific Hub Front: Forged Aluminum, 32H, Disc Specific Spokes: 14g Stainless Steel Tires: Vee Tire Crown Gem, 20x2.6, Wire Bead Derailleur Rear: Shimano Altus Shift Lever: Shimano Altus SL-M315, 8-Speed Crankset: Forged Alloy, Narrow Wide 30T, 140mm Bottom Bracket: Sealed Cartridge Bearings, Square Taper Chain: KMC Z8 Cassette: Shimano 8-speed, 11-32T 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, 31.8 clamp, 30mm Rise, 590mm Width Stem: Marin Alloy, 35mm Grips: Marin MTB Headset: 1-1/8" x 1-1/8" FSA No 10P Seatpost: Marin Alloy, 30.9mm Saddle: Marin Kids MTB Pedals: Kids Specific Nylon Pedal Size Range: One Size 3'8" to 4'4".