The San Quentin 1 27.5 is Marin's hardcore hardtail and a mainstay of the Biketart line-up, a best-seller thanks to its outstanding value, versatility and great looks. It's made for aggressive hardtail trail riders who want a blend of singletrack ability and extended air time.

The style takes its cues from Marin's Alcatraz dirt jump bike, with plenty of standover, slick frame tubes and a striking paint job. The double-butted aluminium frame has internal cable routing, while modern trail geometry pairs a slack head angle with a steep seat angle. The steep seat tube puts your weight between the wheels for efficient climbing and good handling on the flat, and the slack front end and short rear centre help pull you through rough descents and corners with an intuitive feel.

The build is simple and tough: a 130mm SR Suntour XCM34 coil fork with a 15mm thru-axle, a microSHIFT 1x9 drivetrain with a clutch derailleur and wide 11-46T cassette, Tektro hydraulic disc brakes with 180mm rotors front and rear, and wide 29mm tubeless-compatible rims with 2.5" tyres.

The San Quentin 1 27.5 is available in sizes S and M. For sizes M, L and XL, see the 29" version here.

Features

• Series 2 6061 double-butted aluminium frame with internal cable routing
• Dirt jump-inspired styling with generous standover
• Modern trail geometry with slack head angle and steep seat angle
• SR Suntour XCM34 130mm coil fork with 15mm thru-axle
• microSHIFT 1x9 drivetrain with clutch derailleur and 11-46T cassette
• Tektro M275 hydraulic disc brakes with 180mm rotors
• 29mm wide tubeless-compatible rims with 2.5" tyres

Sizing

• S: 5'2" - 5'5"
• M: 5'5" - 5'8"