Description
Marin: San Quentin 20" - 2024
The San Quentin 20" is a fun kids mountain bike from Marin that was made for them to explore everything an offroad bike can do from singletrack to park rides to just cruising the neighborhood in style. Available at Bike Attack Santa Monica, Playa Vista, Culver City, Los Angeles.
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, an SR Suntour XCM suspension fork, 8-speed Shimano drivetrain and kid’s specific hydraulic disc brakes.
SPECIFICATIONS
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FRAMESeries 2 6061 Aluminum, 20” Wheels, Disc Specific, 135mm Dropouts 
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FRONT SUSPENSIONSR Suntour XCM 24 BOOST, 80mm Travel, 110mm Axle Spacing 
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RIMMarin, Double Wall Alloy, 25mm Internal 
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HUB REARForged Aluminum, 32H, Disc Specific 
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HUB FRONTForged Aluminum, 32H, Disc Specific 
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SPOKES14g Stainless Steel 
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TIRESVee Tire Crown Gem, 20x2.6”, Wire Bead 
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DERAILLEUR REARShimano Altus 
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DERAILLEUR FRONT- 
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SHIFT LEVERShimano Altus SL-M315, 8-Speed 
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CRANKSETForged Alloy, Narrow Wide 30T, 140mm 
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BOTTOM BRACKETSealed Cartridge Bearings, Square Taper 
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CHAINKMC Z8 
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CASSETTEShimano 8-speed, 11-32T 
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BRAKES FRONTTektro HD-J285 Kid's Specific Hydraulic Disc 
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BRAKES REARTektro HD-J285 Kid's Specific Hydraulic Disc 
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BRAKE LEVERSTektro Kid's Specific Short Reach Lever for Hydraulic Brake 
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HANDLEBARMarin Riser, 31.8 clamp, 30mm Rise, 590mm Width 
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STEMMarin Alloy, 35mm 
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GRIPSMarin MTB 
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HEADSET1-1/8" x 1-1/8" FSA No 10P 
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SEATPOSTMarin Alloy, 30.9mm 
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SADDLEMarin Kids MTB 
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PEDALSKids Specific Nylon Pedal 
Specifications, pricing, and availability are subject to change without notice.
GEOMETRY
| 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
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