Marin Bikes | 2025 San Quentin 2

📏Size Guide

Aggressive hardtail performance built for trail riding, enduro-inspired descending, jumps, and technical terrain.

The Marin San Quentin 2 29 is an aggressive trail hardtail designed for riders who want the confidence and geometry of an enduro bike in a simpler, more responsive hardtail platform. Built around Marin’s Series 3 double-butted aluminum frame and modern long-low-slack geometry, the San Quentin 2 is equally comfortable attacking bike park lines, technical descents, trail sessions, and everyday aggressive riding.

With a 140mm air suspension fork, long-travel dropper post, wide-range Shimano Deore drivetrain, and powerful four-piston hydraulic brakes, the San Quentin 2 delivers capable trail performance while maintaining the playful and direct ride feel hardtail riders love.

Key Features

• Series 3 Double-Butted Aluminum Frame
Lightweight and durable frame construction with modern aggressive geometry and internal cable routing.

• 140mm X-Fusion Air Suspension Fork
Trail-ready air fork with rebound and compression adjustment for improved control on rough terrain.

• 29” Wheel Platform
Large wheels improve rollover capability, traction, and stability on technical trails.

• Shimano Deore 1x11-Speed Drivetrain
Wide-range gearing with dependable shifting performance for climbing and descending.

• Tektro 4-Piston Hydraulic Disc Brakes
Powerful braking performance with improved modulation for aggressive trail riding.

• 170mm Dropper Post
Long-travel dropper post allows quick saddle adjustment for technical descents and steep terrain.

• Aggressive Trail Geometry
64° head tube angle, long reach, and short rear end provide stability at speed while maintaining playful handling.

Technical Specifications

• Category
Enduro MTB Hardtail

• Discipline
MTB

• Frame
Series 3 6061 Aluminum, Double Butted, Internal Cable Routing, 12x148mm Thru-Axle

• Fork
X-Fusion Slide Boost RC, 140mm Travel, Air Spring

• Bottom Bracket
External Sealed Cartridge Bearing

• Headset
FSA No 57E Semi-Sealed Cartridge Bearings

• Rear Derailleur
Shimano Deore 11-Speed SGS

• Front Derailleur
N/A

• Shifters
Shimano Deore SL-5100R 11-Speed

• Crankset
Marin Forged Alloy w/ Hollow Spindle, 32T Narrow Wide Chainring

• Cassette
Shimano CS-5100-11, 11-51T

• Chain
Shimano CN-LG500

• Brakes
Tektro M535 4-Piston Hydraulic Disc Brakes

• Brake Rotors
180mm

• Wheelset
Marin Aluminum Double Wall, 29mm Inner Width, Tubeless Compatible

• Front Hub
Shimano HF-MT410B, 110x15mm, 32H

• Rear Hub
Shimano HF-MT400B, 148x12mm, 32H

• Tires
Vee Tire Co. Flow Snap 29 x 2.6"

• Handlebar
Marin Mini-Riser Alloy, 780mm Width

• Stem
Marin 3D Forged Alloy, 35mm

• Seatpost
TranzX YSP18 Dropper Post, 170mm Travel

• Saddle
Marin Speed Concept

• Pedals
Marin Nylon Platform

• Color Options
Gloss Blue / Black / Teal (#2563EB)

Geometry

Suitable for aggressive trail riding, technical MTB terrain, jumps, bike park sessions, and enduro-inspired riding.