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Marin San Quentin 3 Trail/Dirt Jump Bike White/Black

Marin San Quentin 3 Trail/Dirt Jump Bike White/Black

Brand: Marin

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Alloy Frame/ Marzocchi Alloy Fork

140mm Front Travel

27.5" (650b) Wheel Size

Hydraulic Disc Brake

Shimano Deore Groupset

1 x 12 Speed

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Product Details

Description

The San Quentin is for the aggressive hardtail trail rider looking for a blend between singletrack capabilities and extended air time. 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. The San Quentin 3 is the top dog in the SQ family. The Series 3 aluminium frame offers more advanced tube forming, more complex dropouts, post mount disc tabs, full internal cable routing, and a boost 148mm thru-axle. Fitted with a Marzocchi Bomber Z2 140mm fork, Shimano MT420 4-piston brakes and 12-speed Shimano deore drivetrain. As well as a X-Fusion dropper post, FSA cranks and rolling on Maxxis Assegai, 27.5x2.5” tyres.

Key Features

Series 3 6061 Aluminum, Double Butted Frame, Internal Cable Routing
Marzocchi Bomber Z2 140mm fork
Shimano Deore wide-range 12-speed drivetrain
Shimano MT420 4-piston brakes
Maxxis Assegai, 27.5x2.5" tubeless ready tyres

Specifications

Product Overview

Product

Marin San Quentin 3 Trail/Dirt Jump Bike White/Black

Brand

Marin

Parent SKU

IB3IH31G

Size SKUs

SM: MAHA2335955001
MD: MAHA2335955002
LG: MAHA2335955003
XL: MAHA2335955004

Year Model

2023

Product Features

Frame Material

Alloy

Colour

White

Wheel Size

27.5" (650b)

Brake Type

Hydraulic Disc Brake

Gears

1 x 12

Fork Material

Alloy

Front Travel

140mm

Build

Frame

All New Series 3 6061 Aluminum, Double Butted Frame, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB

Fork

Marzocchi Bomber Z2, 110x15mm Boost Spacing, 140mm Travel, Kabolt Axle

Handlebars

Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back

Headset

FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”

Grips

Marin Grizzly, Lock On

Stem

Marin 3D Forged Alloy, 35mm

Bottom Bracket

Mego EXO 73mm BSA

Pedals

Nylon Platform

Saddle

Marin Speed Concept

Seat Post

X-Fusion Manic, 1x Composite Remote, Size S 150mm Travel, All Other Sizes: 170mm Travel, 30.9mm

Wheels

Wheel Size

27.5" (650b)

Rims

Marin Aluminum Double Wall, Disc Specific, 29mm Inner, Sleeved Joint, 32H, Tubeless Compatible

Hubs

REAR: Shimano HB-MT410B, 148x12mm, Disc, Microspline Freehub Body / FRONT: Shimano HF-MT410B, 110x15mm, Disc

Spokes

14g Black Stainless Steel

Groupset

Crankset

FSA Comet, Modular 1x, 32T Direct Mount Chainring, MegaTooth Technology, Boost Spacing

Chain

KMC X-12 Silver and Black

Brakes

Shimano MT420, 4-Piston Hydraulic Disc, Metallic Pads

Front Rotor

203mm Rotor

Rear Rotor

180mm Rotor

Shifters

Shimano Deore, 12-Speed, SL-7100R

Rear Derailleur

Shimano Deore, 12-Speed, SGS

Cassette

12 Speed

Frequently Asked Questions

What is the Marin San Quentin 3 Trail/Dirt‑Jump Bike used for?

The Marin San Quentin 3 Trail/Dirt‑Jump Bike is built for aggressive hardtail trail riding and dirt‑jump style riding—mixing singletrack capability with extended airtime. It excels on technical descents, jumps, and punchy climbs.

Why choose the Marin San Quentin 3 Trail/Dirt‑Jump Bike?

Choose the Marin San Quentin 3 Trail/Dirt‑Jump Bike for its purpose‑built geometry, robust Series 3 alloy frame, and high‑performance kit (Marzocchi Z2 fork, Shimano Deore 12‑speed, Shimano MT420 brakes). It’s a complete build that balances playfulness, control, and durability out of the box.

Who is the Marin San Quentin 3 Trail/Dirt‑Jump Bike designed for?

The Marin San Quentin 3 Trail/Dirt‑Jump Bike is designed for aggressive hardtail riders who want a bike that climbs efficiently but shines on fast descents and jumps. It suits riders seeking a durable, confidence‑inspiring hardtail for trail days, park laps, and bike‑park shenanigans.

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PERFECT RIDE GUARANTEE

If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »

FREE BIKE BUILD

We'll build your bike for free when you click and collect at any 99 Bikes store.

FIRST FREE TUNE-UP

Every bike comes with a complimentary free tune-up and safety check. Learn more »

Aggressive trail geometry

Slack head angle and steep seat tube give confident descents and efficient climbs. The short rear center and balanced rider position make cornering and airtime intuitive.

Premium trail components

Marzocchi Bomber Z2 140mm fork, Shimano Deore 12-speed drivetrain, and Shimano MT420 4‑piston brakes deliver strong, reliable performance. Tubeless-ready Maxxis Assegai 27.5x2.5" tyres add traction and pop for jumps.

Built tough for hard use

Series 3 double-butted 6061 aluminum frame with internal routing and 12x148mm boost thru-axle resists abuse while staying responsive. Purposeful parts like FSA cranks, X-Fusion dropper post, and tubeless-compatible wheels keep maintenance low and durability high.

Not sure what sized bike is best?

Answer a few short questions and we'll make a recommendation on which size is best for you.

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Legend

Available size

Current size

Unavailable size

Suggested sizing

Marin San Quentin 3 Trail/Dirt Jump Bike White/Black geometry diagram

Legend

ST Seat Tube
STA Seat Tube Angle
R Reach
TT Top Tube
BD Bottom Bracket Drop
S Stack
CS Chain Stay Length
HT Head Tube
WB Wheel Base
HTA Head Tube Angle
FL Fork Length

Wheel Size

27.5" (650b)

Stack

618

623

632

636

Reach

422

450

470

500

Top Tube Length

565

594

616

647

Seat Tube Length

310

340

375

414

Seat Tube Angle

77.0

Fork Length

Head Tube Length

110

115

125

130

Head Tube Angle

110.0

115.0

125.0

130.0

Handlebar Height

Bottom Bracket Drop

Chainstay Length

Wheelbase

Standover Height

628

656

665

681

Minimum Seat Height

Maximum Seat Height

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