Build your dream hardtail with the Marin San Quentin 3 2026 Frameset, finished in the eye-catching Purple Fade colourway. Developed with freeride legend Matt Jones, the San Quentin takes the playful DNA of Marin’s Alcatraz dirt-jump bike and transforms it into a fast, capable and seriously fun hardcore hardtail mountain bike.
The San Quentin 3 frameset is ideal for riders who want the agility and playful handling of a dirt-jump bike, combined with the speed, stability and roll-over capability of 29-inch wheels. Supplied as a frameset, it gives you complete freedom to choose your own fork, drivetrain, wheels, cockpit and finishing kit to create a bike that is truly yours.
At its heart is Marin's lightweight Series 3 6061 aluminium frame, featuring a double-butted construction that delivers an excellent balance of rigidity, durability and compliance where you need it. The frame's aggressive yet versatile geometry is designed for everything from technical UK mountain bike trails and steep descents to jumps, berms and general trail shredding.
A 12x148mm Boost-style rear thru-axle provides a stiff, secure rear wheel connection, while internal cable routing keeps the build clean and protected. The frame also includes internal dropper-post routing, making it easy to add a dropper post and maximise control on technical terrain.
Whether you're building a lightweight trail hardtail, an aggressive UK trail machine or simply want the freedom to create a bike around your exact component preferences, the Marin San Quentin 3 2026 Frameset is an excellent foundation.
Key Features
- Series 3 6061 aluminium lightweight, double-butted frame
- Purple Fade finish
- Developed with input from freeride legend Matt Jones
- Dirt-jump-inspired handling with capable 29er trail performance
- Aggressive, playful and versatile hardcore hardtail geometry
- 12x148mm rear thru-axle
- 73mm threaded bottom bracket
- Full internal cable routing
- Internal dropper-post routing
- Ideal for custom builds and riders wanting to choose their own components
Shop the Marin San Quentin 3 2026 Frameset from The Rolling Fix in Liverpool and start building a hardtail that's made to be ridden your way.
Specification
Frame: Series 3 6061 Aluminum, Double Butted, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB