Description
Dirt Jump DNA Meets Modern Trail Performance
The Marin San Quentin 2 29 is a hardtail mountain bike that combines dirt jump-inspired handling with the speed, stability, and rollover capability of 29″ wheels. Designed for riders who want a playful bike with aggressive trail performance, the San Quentin delivers confidence on jumps, technical trails, and urban terrain.
Built around a Series 3 6061 aluminium frame with modern trail geometry, Boost spacing, internal cable routing, and a 140mm suspension fork, this bike provides the perfect balance between durability, control, and value. With a TranzX dropper post, Shimano Deore drivetrain, Tektro 4-piston brakes, and Vee Tire Co. rubber, the San Quentin 2 offers serious performance without the premium price tag.
Key Features
- 29″ hardtail trail mountain bike with dirt jump-inspired design
- Built for aggressive trail riding, jumps, and technical terrain
- Series 3 6061 aluminium frame
- 140mm X-Fusion Slide Boost RC suspension fork
- Shimano Deore 11-speed drivetrain
- Tektro M535 4-piston hydraulic disc brakes
- TranzX 170mm dropper post
- Marin aluminium double-wall wheelset
- Vee Tire Co. Flow Snap 29×2.6″ tyres
- Modern trail geometry:
- 64° head tube angle
- 77° seat tube angle
- Long reach measurements
- Internal cable routing
- Boost 148x12mm rear axle
- ISCG05 chain guide compatibility
- Tubeless-compatible rims
Specifications
Frame
| Component | Details |
|---|---|
| Frame Material | Series 3 6061 Aluminium, Double Butted |
| Wheel Size | 29″ |
| Suspension Type | Hardtail |
| Rear Axle | 12x148mm Boost Thru-Axle |
| Bottom Bracket | 73mm Threaded BB |
| Cable Routing | Internal |
| Chain Guide Mount | ISCG05 Compatible |
Suspension
Fork
| Specification | Details |
|---|---|
| Model | X-Fusion Slide Boost RC |
| Wheel Size | 29″ |
| Travel | 140mm |
| Adjustments | Compression + Rebound Adjustment |
| Axle | 110x15mm Thru-Axle |
| Offset | 44mm |
Rear Shock
| Specification | Details |
|---|---|
| Rear Shock | Not Included |
Wheels & Tyres
Wheelset
| Specification | Details |
|---|---|
| Rims | Marin Aluminium Double Wall |
| Rim Width | 29mm Internal |
| Joint Type | Pinned Joint |
| Spoke Count | 32H |
| Tubeless Ready | Yes |
| Front Hub | Shimano HB-TC500, 110x15mm |
| Rear Hub | Shimano FH-TC500, 148x12mm |
| Freehub | Shimano Micro Spline |
| Disc Mount | Centerlock |
| Spokes | 14g Black Stainless Steel |
Tyres
Front & Rear:
- Vee Tire Co. Flow Snap 29×2.6″
- MPC Compound
- Wire Bead
Drivetrain
| Component | Details |
|---|---|
| Rear Derailleur | Shimano Deore 11-Speed SGS |
| Front Derailleur | Not Included |
| Shifter | Shimano Deore SL-5100R 11-Speed |
| Crankset | Marin Forged Alloy |
| Chainring | 32T Narrow Wide Integrated Steel Chainring |
| Bottom Bracket | External Sealed Cartridge Bearing |
| Chain | Shimano CN-LG500 |
| Cassette | Shimano CS-5100-11 |
| Cassette Range | 11-51T |
Brakes
Front Brake
- Tektro M535 4-Piston Hydraulic Disc Brake
- 180mm Rotor
Rear Brake
- Tektro M535 4-Piston Hydraulic Disc Brake
- 180mm Rotor
Brake Levers
- Tektro M535
Cockpit
| Component | Details |
|---|---|
| Handlebar | Marin Mini-Riser 6061 Double Butted Aluminium |
| Width | 780mm |
| Rise | 28mm |
| Sweep | 9° Back / 5° Up |
| Stem | Marin 3D Forged Alloy |
| Stem Length | 35mm |
| Grips | Marin Grizzly Lock-On |
| Headset | FSA No.57E Semi-Sealed Cartridge Bearings, 1 1/8″ x 1 1/2″ |
Seat Components
| Component | Details |
|---|---|
| Dropper Post | TranzX YSP18 Dropper Post |
| Diameter | 30.9mm |
| Remote | 1x Remote |
| Travel | 170mm (All Sizes) |
| Saddle | Marin Speed Concept |
| Pedals | Marin Oso OE Flat |
Geometry
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stack | 632mm | 636mm | 645mm | 650mm |
| Reach | 422mm | 450mm | 470mm | 500mm |
| Head Tube Angle | 64° | 64° | 64° | 64° |
| Head Tube Length | 115mm | 120mm | 125mm | 130mm |
| Seat Tube Angle | 77° | 77° | 77° | 77° |
| Seat Tube Length | 330mm | 380mm | 410mm | 420mm |
| Effective Top Tube | 568mm | 596mm | 619mm | 650mm |
| Bottom Bracket Height | 316mm | 316mm | 316mm | 316mm |
| Bottom Bracket Drop | 50mm | 50mm | 50mm | 50mm |
| Chainstay Length | 430mm | 430mm | 430mm | 430mm |
| Wheelbase | 1182mm | 1212mm | 1236mm | 1268mm |
| Standover Height | 650mm | 683mm | 688mm | 695mm |
| Fork Offset | 44mm | 44mm | 44mm | 44mm |
| Seatpost Diameter | 30.9mm | 30.9mm | 30.9mm | 30.9mm |
| Handlebar Width | 780mm | 780mm | 780mm | 780mm |
| Stem Length | 35mm | 35mm | 35mm | 35mm |
| Crank Length | 170mm | 170mm | 170mm | 170mm |
All measurements are in millimeters.
Technology Highlights
Series 3 Aluminium Frame
The San Quentin 2 and 3 models feature Series 3 aluminium frames with advanced tube shaping, complex forged dropouts, post mount disc brake compatibility, full internal cable routing, and Boost 148mm rear axle standards for improved stiffness and durability.
Dirt Jump Inspired Frame Design
Inspired by Marin’s Alcatraz dirt jump platform, the San Quentin frame combines a low standover height, smooth tubing, and a compact, aggressive design that delivers playful handling and confidence on jumps and technical trails.
Modern Trail Geometry
The San Quentin’s modern geometry combines a slack 64° head tube angle with a steep 77° seat tube angle. This creates precise front-wheel control on climbs while maintaining stability and confidence during aggressive descents.
ISCG05 Chain Guide Mounts
The San Quentin 2 and 3 feature ISCG05 mounts, allowing riders to easily install a chain guide for demanding trail riding and rough terrain.
Sizing & Selection
Choosing the correct bike size is important for comfort, control, and performance. The San Quentin’s aggressive trail geometry provides a balanced riding position for riders who enjoy jumps, technical trails, and playful handling.
Use the geometry chart above to compare reach, stack, and frame dimensions.
- Smaller size: More agile and easier to manoeuvre for jumps and tricks
- Larger size: More stability and confidence at higher speeds
