Marin Bolinas Ridge 1 29" Mountain Bike 2025 - Hardtail MTB



Designed for trail riders and off-road explorers, the Marin Bolinas Ridge 1 29” offers durable alloy construction, confidence-inspiring 100mm front suspension, and reliable Shimano gearing. With 29” wheels for efficient rolling, it’s a great entry into the world of mountain biking.
Key Features:
- Frame: Series 1 6061 aluminium, low standover, chainstay-mounted disc brakes
- Fork: SR Suntour XCE Disc, 100mm travel, preload adjustment
- Drivetrain: Shimano Tourney 3x7-speed, 21-speed gearing
- Brakes: Clark’s CMD-23 mechanical disc brakes, 160mm rotors
- Wheels & Tyres: 29” Marin double-wall alloy rims, 2.25” MTB tyres
- Other Features: 780mm riser handlebars for confident handling
- Finance: Available with 0% APR finance
The Marin Bolinas Ridge 1 is designed to help new riders build confidence and explore off-road trails with ease. Its Series 1 aluminium frame provides a strong yet lightweight chassis, while the 100mm SR Suntour fork smooths out rough terrain for a more comfortable ride.
Equipped with a Shimano Tourney 3x7 drivetrain, the bike offers 21-speed gearing for tackling climbs and descents. The Clark’s mechanical disc brakes provide reliable stopping power in all conditions, whether on dusty singletrack or muddy forest trails.
Rolling on 29” wheels, the Bolinas Ridge 1 delivers efficient speed and stability, while the 2.25” MTB tyres offer grip and control. The wide 780mm riser bars improve handling, making it easier to stay in control when the trails get technical.
A fantastic entry-level MTB for those looking to experience trail riding without breaking the bank, the Marin Bolinas Ridge 1 29” is a fun, capable, and budget-friendly choice for off-road adventures.
Occasionally, without notice, manufacturers change product design and/or specifications.
Frame | Series 1 6061 Aluminum, 27.5”/29" Wheels, Low Standover, 68mm BB shell, 135mm Forged Dropouts, Chainstay Mounted Disc Brakes |
Fork | SR Suntour XCE Disc, 100mm Travel, Preload Adjustment, 46mm Offset |
Headset | FSA No.10-P |
Stem | Marin Alloy, 31.8mm, 45mm |
Bars | Marin 31.8 Riser, 12mm Rise, 780mm Width |
Front Brake | Clark's CMD-23 Mechanical Disc, Shimano Pad Compatible, 160mm Rotor |
Rear Brake | Clark's CMD-23 Mechanical Disc, Shimano Pad Compatible, 160mm Rotor |
Brake Lever | Shimano w/ Integrated Shifters |
Front Mech | Shimano FD-TX500 |
Rear Mech | Shimano Tourney, 7-Speed |
Shifters | Shimano Tourney 3x7-Speed |
Speed | 21 |
Rims | Marin, Double Wall Alloy |
Front Hub | Forged Alloy, Disc, 32H |
Rear Hub | Forged Alloy, Disc, 32H |
Spokes | Black Stainless Steel |
Front Tyre | MTB, 27.5 x2.25" |
Rear Tyre | MTB, 27.5 x2.25" |
Seat Post | Marin Alloy, 27.2mm |
Saddle | Marin MTB |
Chain | KMC Z8 |
Cassette | Shimano, CSHG200, 7-Speed, 11-32T |
Pedals | Nylon Platform |
Bolinas Ridge Sizing
See the table below to find the right size Marin Bolinas Ridge.
Size |
XS |
S |
M |
L |
XL |
XXL |
Rider Height Range |
5’0” – 5’4” |
5’4” – 5’7” |
5’7” – 5’10” |
5’10” – 6’0” |
6’0” – 6’2” |
6’2” – 6’4” |
Read our bike size guide for more information on sizing.
Bolinas Ridge Geometry
Size |
S |
M |
L |
XL |
XXL |
Stack (mm) |
567 |
574 |
583 |
593 |
612 |
Reach (mm) |
387 |
420 |
432 |
434 |
432 |
Head Tube Angle |
71 |
72 |
72 |
72 |
72 |
Head Tube Length |
123 |
123 |
133 |
143 |
163 |
Seat Tube Angle Virtual |
74 |
73.5 |
73.5 |
73 |
72 |
Seat Tube Angle Actual |
74 |
73.5 |
73.5 |
73 |
72 |
Seat Tube Length (mm) |
381 |
432 |
483 |
521 |
559 |
Top Tube Actual (mm) |
535.6 |
566.6 |
581.6 |
592.3 |
606.8 |
Top Tube Effective (mm) |
550 |
590 |
605 |
615 |
630 |
Bottom Bracket Height (mm) |
283 |
283 |
283 |
283 |
283 |
Bottom Bracket Drop (mm) |
70 |
70 |
70 |
70 |
70 |
Chainstay (mm) |
445 |
445 |
445 |
445 |
445 |
Wheelbase (mm) |
1052 |
1070 |
1086 |
1090 |
1094 |
Standover Height (mm) |
663 |
705 |
748 |
779 |
811 |
Fork Offset |
51 |
45 |
45 |
45 |
45 |
Seatpost Diameter (mm) |
27.2 |
27.2 |
27.2 |
27.2 |
27.2 |
Handlebar Width (mm) |
680 |
680 |
680 |
680 |
680 |
Stem Length (mm) |
51 |
45 |
45 |
45 |
45 |
Crank Length (mm) |
170 |
175 |
175 |
175 |
175 |
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Marin Bolinas Ridge 1 29" Mountain Bike 2025 - Hardtail MTB
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