Marin Bolinas Ridge 2 27.5" Mountain Bike 2025 - MTB
- Shimano Altus 3x8 drivetrain
- Clark's hydraulic disc brakes
- SR/Suntour XCM DS fork
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 XCM DS, 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 Clout Hydraulic Disc, 160mm Rotor |
Rear Brake | Clark's Clout Hydraulic Disc, 160mm Rotor |
Brake Lever | Clark's Hydraulic |
Front Mech | Shimano FD-TY700 |
Rear Mech | Shimano Altus, 8-Speed |
Shifters | Shimano Altus 3x8-Speed |
Speed | 24 |
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 |
Rear Tyre | MTB, 27.5 |
Seat Post | Marin Alloy, 27.2mm |
Saddle | Marin MTB |
Bottom Bracket | Sealed Cartridge Bearings, Square Taper |
Chain | KMC Z8 |
Cassette | SunRace 8-Speed, 11-34T |
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 2 27.5" Mountain Bike 2025 - MTB
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