Marin San Quentin 1

The Marin San Quentin 1 is a versatile hardtail mountain bike designed for trail riding, technical terrain and everyday off-road adventures. Its Series 2 6061 aluminum frame uses a double-butted construction with internal cable routing and is available with either 27.5-inch or 29-inch wheels depending on frame size. A 130mm SR Suntour XCM34 Boost suspension fork helps absorb bumps and uneven trail surfaces, while the 1x9 MicroShift drivetrain provides a wide 11-46T gearing range for climbing and varied terrain. Tektro M275 hydraulic disc brakes with 180mm rotors deliver controlled stopping power, and the 2.5-inch tires provide useful traction on dirt and loose surfaces. With modern trail geometry, a Boost front axle and tubeless-compatible rims, the San Quentin 1 provides a practical platform for riders looking for a capable and upgrade-friendly hardtail MTB.

Key Features

• Frame: Series 2 6061 aluminum, double-butted construction

• Wheel Size: 27.5-inch or 29-inch depending on frame size

• Front Suspension: SR Suntour XCM34 Boost with 130mm travel

• Drivetrain: MicroShift 1x9-speed with clutch rear derailleur

• Cassette: SunRace 9-speed, 11-46T

• Crankset: Marin forged alloy with 32T narrow-wide chainring

• Brakes: Tektro M275 hydraulic disc brakes

• Brake Rotors: 180mm front and rear

• Tires: Delium Versatile 2.5-inch tubeless-compatible tires

• Handlebar: Marin Mini-Riser 6061 double-butted aluminum, 780mm

• Stem: Marin 3D forged alloy, 45mm

• Cable Routing: Internal cable routing

• Rims: Marin aluminum double-wall, tubeless compatible

Product Specifications

• Product Type: Hardtail trail mountain bike

• Model: San Quentin 1

• Frame Material: Series 2 6061 aluminum

• Frame Construction: Double-butted

• Wheel Options: 27.5-inch or 29-inch

• Bottom Bracket: 73mm threaded

• Front Fork: SR Suntour XCM34 Boost, coil spring

• Front Travel: 130mm

• Front Axle: 110x15mm Boost thru-axle

• Rear Dropout: 141mm open dropout

• Rims: Marin aluminum double-wall, 29mm inner width

• Front Hub: Forged alloy, 110x15mm

• Rear Hub: Forged alloy, 141mm QR

• Tires: Delium Versatile, 2.5-inch, wire-bead, tubeless compatible

• Rear Derailleur: MicroShift RD-M9195M, 9-speed with clutch

• Shifter: MicroShift SL-M6195-R, 1x9

• Crankset: Marin forged alloy, 32T narrow-wide

• Chain: KMC X-9

• Cassette: SunRace, 9-speed, 11-46T

• Front Brake: Tektro M275 hydraulic disc, 180mm rotor

• Rear Brake: Tektro M275 hydraulic disc, 180mm rotor

• Brake Levers: Tektro M275

• Handlebar: Marin Mini-Riser, 780mm width, 28mm rise

• Seatpost: Marin Alloy, 30.9mm

• Saddle: Marin Speed Concept

• Headset: FSA No. 57E, 1 1/8" x 1 1/2"

• Available Sizes: S, M, L and XL

Trail Geometry & Riding Performance

• Head Angle: 64° across the listed frame sizes for stable trail handling

• Seat Angle: 77° for a forward and efficient climbing position

• Chainstay Length: 425mm on S/M and 430mm on L/XL

• Reach: 422mm to 500mm depending on frame size

• Bottom Bracket Drop: 50mm

• Trail Handling: Modern geometry provides a stable platform for technical and uneven terrain

• Wheel Configuration: 27.5-inch and 29-inch options provide flexibility according to frame size and rider preference

Easy Operation / Usage

• Suspension Setup: Adjust the fork according to rider weight and preferred trail conditions

• Gear Selection: Use the 1x9 drivetrain and 11-46T cassette for climbs, flats and descents

• Braking: Apply the hydraulic disc brakes progressively for controlled speed management

• Tire Pressure: Adjust tire pressure according to rider weight, terrain and riding conditions

• Pre-Ride Check: Inspect brakes, drivetrain, tires, wheels and suspension before demanding rides

Why Choose This Product

• Trail Ready: 130mm front suspension provides useful control over rough and uneven terrain

• Wide Gearing: 11-46T cassette offers a broad range for climbing and trail riding

• Strong Frame: 6061 aluminum construction provides a durable foundation for off-road use

• Braking Control: Hydraulic disc brakes provide consistent stopping performance

• Traction: 2.5-inch tires provide grip across dirt, gravel and loose trail surfaces

• Modern Geometry: Slack trail geometry supports stability and confident handling

• Upgrade Potential: Tubeless-compatible rims provide a practical foundation for future tire upgrades

• Wheel Choice: 27.5-inch and 29-inch configurations accommodate different frame sizes and riding preferences

In the Box

• Marin San Quentin 1 complete mountain bike

• Front and rear wheels

• Marin Mini-Riser handlebar

• Marin 3D forged alloy stem

• Marin alloy seatpost

• Marin Speed Concept saddle

• Marin MTB plastic pedals

• Front thru-axle and rear quick-release hardware