Marin San Quentin 3 29 2025 Bike

More Information
Brand	Marin
Colour	Gloss White / Black / Red
Suitable for	Everyone
Wheel Size	29-inch

Marin County California is regarded as the birthplace of mountain biking. With niche communities back then shaping what it is today, and with Marin Bikes' inception coming shortly after, the company has deep roots in the sport and now offers many styles of bikes to suit off-roaders and commuters alike.

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Dirt jump DNA with all the speed and roll-over of 29" wheels. The San Quentin 3 29 is the top dog in the SQ 29 family. We’ve worked tirelessly to create the very best-specced San Quentin 29 ever but still kept the price tag down to earth and in reach of everyone. Marzocchi Z2 fork? Check. TRP 4-piston brakes and 12-speed drivetrain? TranzX dropper post? You got it. FSA cranks, Maxxis rubber and plenty of kick-ass Marin kit? Abso-freakin-lutely.

Key Upgrades From The San Quentin 2

Marzocchi Bomber Z2 fork
Shimano Deore wide-range 12-speed drivetrain
TRP Slate Evo 4-piston brakes
Maxxis Assegai tubeless compatible tyres

Technology

Series 3 And 2 Aluminum Frames

The San Quentin 1 features a Series 2 aluminum frame, with tapered head tubes, 3D forged drop outs, IS brake mounts, and semi-internal cable routing. The San Quentin 2 and 3 feature Series 3 aluminum frames, with more advanced tube forming, more complex dropouts, post mount disc tabs, full internal cable routing, and a boost 148mm thru-axle

Dirt Jump Inspired Frame Style

Taking cues from the Alcatraz, the San Quentin line up provides all the benefits of the DJ style with massive stand over, slick frame tubes, and a sexy paint job.

Modern Trail Geometry

The slack head tube angle paired with a steep seat tube angle create a ride that will fly uphill with perfect front wheel precision but then descend like it’s on rails. The balanced rider position thanks to the steep seat tube puts your weight between the wheels for impressive climbing and handling on flats, while the slack front end and short rear center help to pull you through the rough descents and corners with an intuitive feel.

ISCG Tabs

San Quentin 2 and 3 models feature ISCG 05 tabs for easy chain retention device installation for rowdier riders.

Specifications

Frame and Forks

Frame: Series 3 6061 Aluminum, Double Butted Frame, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded Bottom Bracket
Fork: Marzocchi Bomber Z2, 110x15mm Boost Spacing, 140mm Travel, Kabolt Axle

Drivetrain

Front Derailleur:
Rear Derailleur: Shimano Deore, 12-Speed, SGS
Crankset: FSA Comet, Modular 1x, 32 Tooth Direct Mount Chainring, MegaTooth Technology, Boost Spacing
Cassette: SunRace, 12-Speed, MicroSpline, 10-51 Tooth
Bottom Bracket: FSA MegaExo 73mm BSA
Chain: KMC X-12 Silver and Black

Braking/Shifting

Brakes: TRP Slate EVO 4-Piston Hydraulic, Resin Pads, 203mm Rotor Front, 180mm Rear
Gear Shifters: Shimano Deore, 12-Speed, SL-7100R

Wheels

Front Hub: Shimano HB-TC500, 110x15mm
Rear Hub: Shimano FH-TC500, 148x12, MicroSpline Freehub Body, Centerlock Disc, 32 Holes
Rims: Marin Aluminum Double Wall, Disc Specific, 29mm Inner, Sleeved Joint, 32 Hole, Tubeless Compatible
Tyres: Maxxis Assegai, 29x2.5" MAXX TERRA, EXO Casing, Tubeless Compatible

Finishing Kit

Headset: FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
Handlebar: Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back
Stem: Marin 3D Forged Alloy, 35mm
Grips: Marin Grizzly Lock On
Saddle: Marin Speed Concept
Seat Post: TranzX YSP23JL, 1x Remote, Size Small 125mm Travel, Size Medium 150mm Travel, Size Large-X-Large 170mm Travel, 30.9mm
Pedals: Marin Oso OE Flat