Description
Dirt Jump DNA Meets Ultimate 29″ Trail Performance
The Marin San Quentin 3 29 is the top model in the San Quentin 29 family, combining dirt jump-inspired handling with the speed, stability, and rollover capability of large 29″ wheels. Designed for riders who want a playful, aggressive hardtail that can handle jumps, technical trails, and rough terrain, the San Quentin 3 delivers premium performance while keeping excellent value.
Built around a Series 3 6061 aluminium frame with modern trail geometry, Boost spacing, and internal cable routing, this bike offers a strong and responsive platform. Equipped with a Marzocchi Bomber Z2 fork, Shimano Deore 12-speed drivetrain, Tektro Slate EVO 4-piston brakes, TranzX dropper post, and Marin components, the San Quentin 3 is ready for serious trail sessions straight out of the box.
Key Upgrades Compared to San Quentin 2 29
- Marzocchi Bomber Z2 suspension fork
- Shimano Deore wide-range 12-speed drivetrain
- Tektro Slate EVO 4-piston hydraulic brakes
- Maxxis Assegai tubeless-compatible tyres
Key Features
- 29″ hardtail trail mountain bike with dirt jump-inspired design
- Designed for aggressive trail riding, jumps, and technical terrain
- Series 3 6061 aluminium frame
- 140mm Marzocchi Bomber Z2 fork
- Shimano Deore 12-speed drivetrain
- Tektro Slate EVO 4-piston hydraulic brakes
- TranzX YSP23JL dropper post
- Maxxis Assegai tubeless-compatible tyres
- FSA Comet Modular 1x crankset
- 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 wheel setup
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 | Marzocchi Bomber Z2 |
| Wheel Size | 29″ |
| Travel | 140mm |
| Axle | 110x15mm Boost Kabolt Axle |
| Offset | 44mm |
| Adjustments | Compression + Rebound Adjustment |
Rear Shock
| Specification | Details |
|---|---|
| Rear Shock | Not Included |
Wheels & Tyres
Wheelset
| Specification | Details |
|---|---|
| Rims | Marin Aluminium Double Wall |
| Rim Width | 29mm Internal |
| Joint Type | Sleeved Joint |
| Spoke Count | 32H |
| Tubeless Ready | Yes |
| Front Hub | Shimano HB-MT410B, 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 12-Speed SGS |
| Front Derailleur | Not Included |
| Shifter | Shimano Deore SL-6100IR 12-Speed |
| Crankset | FSA Comet Modular 1x |
| Chainring | 32T Direct Mount Chainring, MegaTooth Technology |
| Bottom Bracket | FSA MegaExo 73mm BSA |
| Chain | KMC X-12 Silver and Black |
| Cassette | Shimano Deore 12-Speed |
| Cassette Range | 10-51T |
Brakes
Front Brake
- Tektro Slate EVO 4-Piston Hydraulic Disc Brake
- Resin Pads
- 203mm Rotor
Rear Brake
- Tektro Slate EVO 4-Piston Hydraulic Disc Brake
- Resin Pads
- 180mm Rotor
Brake Levers
- Tektro Slate EVO
- I-Spec EV Compatible
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 YSP23JL Dropper Post |
| Diameter | 30.9mm |
| Remote | 1x Remote |
| Travel Size S | 125mm |
| Travel Size M | 150mm |
| Travel Size L/XL | 170mm |
| 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 an aggressive design to deliver playful handling and confidence on jumps, corners, 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 while climbing and provides 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.
