Marin San Quentin 1 29" Mountain Bike 2025 - Hardtail MTB
Blending the best of trail and dirt jump DNA, the Marin San Quentin 1 29" is built to rip on aggressive terrain, with modern geometry, big tyres and value-packed spec for confident all-round riding.
Key Features:
- Series 2 6061 aluminium frame with internal routing and modern trail geometry
- SR Suntour XCM34 coil fork with 130mm travel and Boost spacing
- Single-speed rear end with MicroShift 1x9 clutch drivetrain
- Tektro M275 hydraulic disc brakes with 180mm rotors
- 29” wheels with Vee Tire Co Flow Snap 2.6” trail tyres
- Wide 780mm riser bars and 45mm stem for confident control
- Available with 0% APR finance
Despite the initial request mentioning an e-bike, the Marin San Quentin 1 29" is in fact a non-electric hardtail mountain bike, designed for riders who want full control, simplicity and robust trail performance without the added complexity of a motor system.
Born from a blend of dirt jump roots and trail riding demands, the San Quentin 1 offers an aggressive stance with slack angles, long reach and short chainstays—resulting in a ride that feels both playful and planted. The Series 2 6061 aluminium frame is double-butted for strength and weight savings, and internal cable routing keeps things tidy and protected on rough trails.
Up front, the SR Suntour XCM34 Boost fork delivers 130mm of bump-smoothing travel with a coil spring for consistent performance and simple tuning. Boost spacing adds stiffness to the front end for precise handling when the trail gets rough.
The drivetrain features MicroShift’s 1x9 wide-range setup with a clutch-equipped rear mech, providing quiet, chain-secure shifting across an 11–46T cassette. It’s a solid, low-maintenance setup that’s perfect for weekend shredders or new trail riders alike.
Stopping duties are handled by Tektro M275 hydraulic brakes, paired with 180mm rotors front and rear for dependable modulation and braking power even on steeper terrain.
Wide 29” wheels are wrapped in Vee Tire Co Flow Snap 2.6” rubber, offering a grippy, confident ride across everything from loose corners to rock gardens. Marin’s finishing kit includes a 780mm riser bar and a short 45mm stem for enhanced leverage and trail control.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Series 2 6061 Aluminum 27.5 or 29" Wheel, Double Butted, Internal Cable Routing, 141mm Open Dropout, 73mm Threaded BB |
| Fork | SR Suntour XCM34 Boost 15x110mm Spacing, 130mm Travel, Coil Spring, 27.5", Bolt-On Thru-Axle |
| Headset | FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2” |
| Stem | Marin 3D Forged Alloy, 45mm |
| Bars | Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back |
| Front Brake | Tektro M275 Hydraulic, 180mm Rotor |
| Rear Brake | Tektro M275 Hydraulic, 180mm Rotor |
| Brake Lever | Tektro M275 |
| Rear Mech | MicroShift RD-M9195M, 9 Speed, With Clutch |
| Shifters | MicroShift SL-M9195-R, 1x9 with Bearings |
| Speed | 9 |
| Rims | Marin Aluminum Double Wall, Specific, 29mm Inner, Pinned Joint, 32H, Tubeless Compatible |
| Front Hub | Forged Alloy, 110x15mm, Sealed Cartridge Bearing, 32H |
| Rear Hub | Forged Alloy, Quad Sealed Cartridge Bearings, Alloy Axle, QR type, 141mm Width, 32H, Shimano Standard Freehub Body |
| Front Tyre | Vee Tire Co, Flow Snap, 2.6", MPC Compound, Wire Bead |
| Rear Tyre | Vee Tire Co, Flow Snap, 2.6", MPC Compound, Wire Bead |
| Seat Post | Marin Alloy, 30.9mm |
| Saddle | Marin Speed Concept |
| Chainset | Marin Forged Alloy, Integrated Steel 32t Narrow Wide Changing, Boost Spacing |
| Bottom Bracket | Sealed Cartridge Bearing, Square Taper |
| Chain | KMC X-9 |
| Cassette | Sunrace, 9 Speed, 11-46T |
| Pedals | Resin Platform |
San Quentin Sizing
See the table below to find the right size Marin San Quentin.
|
Height |
Size |
||||||
|
4’8” / 143cm |
XXS |
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4’9” / 145cm |
XXS |
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4’10” / 148cm |
|
XS |
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4’11” / 150cm |
|
XS |
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|
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5’0” / 152cm |
|
XS |
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5’1” / 155cm |
|
XS |
S |
|
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5’2” / 158cm |
|
|
S |
|
|
|
|
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5’3” / 160cm |
|
|
S |
|
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5’4” / 163cm |
|
|
S |
|
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5’5” / 165cm |
|
|
S |
M |
|
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5’6” / 168cm |
|
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|
M |
|
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|
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5’7” / 170cm |
|
|
|
M |
|
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5’8” / 173cm |
|
|
|
M |
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5’9” / 175cm |
|
|
|
M |
L |
|
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5’10” / 178cm |
|
|
|
M |
L |
|
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5’11” / 180cm |
|
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|
L |
|
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6’0” / 183cm |
|
|
|
|
L |
XL |
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6’1” / 185cm |
|
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|
L |
XL |
|
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6’2” / 188cm |
|
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|
XL |
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6’3” / 191cm |
|
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|
XL |
XXL |
|
6’4” / 193cm |
|
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|
XXL |
|
6’5” / 196cm |
|
|
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|
XXL |
|
6’6” / 198cm |
|
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|
XXL |
Read our bike size guide for more information on sizing.
San Quentin Geometry
|
Size |
S |
M |
L |
XL |
|
Stack |
586.1 |
590.7 |
599.7 |
604.3 |
|
Reach
|
422 |
444 |
464 |
484 |
|
Head Tube Angle |
65 |
65 |
65 |
65 |
|
Head Tube Length |
105 |
110 |
120 |
125 |
|
Seat Tube Angle (Virtual) |
75 |
75 |
75 |
75 |
|
Seat Tube Angle (Actual) |
75 |
75 |
75 |
75 |
|
Seat Tube Length |
385 |
420 |
475 |
515 |
|
Top Tube (Actual) |
564 |
582 |
604 |
626 |
|
Top Tube (Effective) |
579.1 |
602.3 |
624.7 |
645.9 |
|
Bottom Bracket Height |
310 |
310 |
310 |
310 |
|
Bottom Bracket Drop |
50 |
50 |
50 |
50 |
|
Chain Stay |
425 |
425 |
425 |
425 |
|
Wheelbase |
1144.8 |
1168.9 |
1193.1 |
1215.3 |
|
Standover Height |
664 |
677 |
714 |
745 |
|
Fork Offset |
46 |
46 |
46 |
46 |
|
Seatpost Diameter |
30.9 |
30.9 |
30.9 |
30.9 |
|
Handlebar Width |
780 |
780 |
780 |
780 |
|
Stem Length |
45 |
45 |
45 |
45 |
|
Crank Length |
170 |
175 |
175 |
175 |
Read our Mountain Bike Geometry Explained guide for more information on MTB geometry.
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