Marin San Quentin 3 29" Mountain Bike 2025 - Hardtail MTB
- Frame: Series 3 661 aluminum, double-butted, 12x148mm thru-axle, threaded BB
- Fork: Marzocchi Bomber Z2, 110x15mm boost spacing, 140mm travel, Kabolt axle
- Drivetrain: Shimano Deore, 12-speed, with FSA Comet 32t chainring
- Brakes: Tektro Slate Evo, 4-piston hydraulic, 203mm front rotor, 180mm rear rotor
- Wheels: Marin aluminum double wall, 29mm inner, tubeless compatible
- Tyres: Maxxis Assegai, 27.5x2.5", 3C Maxx Terra, EXO, tubeless compatible
- Standout Feature: TranzX dropper post for enhanced versatility
- Finance Option: Available with 0% APR finance.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | All New Series 3 661 Aluminum, Double Butted Frame, Internal Cable Routing, 12x148mm Thru-Axle, 73mm Threaded BB |
| Fork | Marzocchi Bomber Z2, 110x15mm Boost Spacing, 140mm Travel, Kabolt Axle |
| Headset | FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2” |
| Stem | Marin 3D Forged Alloy, 35mm |
| Bars | Marin Mini-Riser, 661 Double Butted Aluminum, 78mm Width, 28mm Rise, 5º Up, 9º Back |
| Front Brake | Tektro Slate EVO, 4-Piston Hydraulic, Resin Pads, 203mm Rotor |
| Rear Brake | Tektro Slate EVO, 4-Piston Hydraulic Disc, Resin Pads, 180mm Rotor |
| Brake Lever | Tektro Slate EVO, I-Spec EV Compatible |
| Rear Mech | Shimano Deore, 12-Speed, SGS |
| Shifters | Shimano Deore, 12-Speed, SL-71R |
| Speed | 12 |
| Rims | Marin Aluminum Double Wall, Disc Specific, 29mm Inner, Sleeved Joint, 32H, Tubeless Compatible |
| Front Hub | Shimano HF-MT41B, 11x15mm, Disc |
| Rear Hub | Shimano HB-MT41B, 148x12mm, Disc, Microspline Freehub Body |
| Spokes | 14g Black Stainless Steel |
| Front Tyre | Maxxis Assegai, 27.5x2.5", 3C MAXX TERRA, EXO, Tubeless Compatible |
| Rear Tyre | Maxxis Assegai, 27.5x2.5", 3C MAXX TERRA, EXO, Tubeless Compatible |
| Seat Post | X-Fusion Manic, 1x Composite Remote, Size S 15mm Travel, All Other Sizes: 17mm Travel, 3.9mm |
| Saddle | Marin Speed Concept |
| Chainset | FSA Comet, Modular 1x, 32T Direct Mount Chainring, MegaTooth Technology, Boost Spacing |
| Bottom Bracket | Mego EXO 73mm BSA |
| Chain | KMC X-12 Silver and Black |
| Cassette | Shimano, Deore 12-Speed, 1-51T |
| 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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|
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4’9” / 145cm |
XXS |
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|
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4’10” / 148cm |
|
XS |
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|
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|
|
|
4’11” / 150cm |
|
XS |
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|
|
|
|
5’0” / 152cm |
|
XS |
|
|
|
|
|
|
5’1” / 155cm |
|
XS |
S |
|
|
|
|
|
5’2” / 158cm |
|
|
S |
|
|
|
|
|
5’3” / 160cm |
|
|
S |
|
|
|
|
|
5’4” / 163cm |
|
|
S |
|
|
|
|
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5’5” / 165cm |
|
|
S |
M |
|
|
|
|
5’6” / 168cm |
|
|
|
M |
|
|
|
|
5’7” / 170cm |
|
|
|
M |
|
|
|
|
5’8” / 173cm |
|
|
|
M |
|
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|
5’9” / 175cm |
|
|
|
M |
L |
|
|
|
5’10” / 178cm |
|
|
|
M |
L |
|
|
|
5’11” / 180cm |
|
|
|
|
L |
|
|
|
6’0” / 183cm |
|
|
|
|
L |
XL |
|
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6’1” / 185cm |
|
|
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|
L |
XL |
|
|
6’2” / 188cm |
|
|
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|
XL |
|
|
6’3” / 191cm |
|
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|
XL |
XXL |
|
6’4” / 193cm |
|
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|
|
XXL |
|
6’5” / 196cm |
|
|
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|
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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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