Marin Bolinas Ridge 2 2025 Red Mountain Bike

The perfect blend of performance, value and fun, the Marin Bolinas Ridge is ideal for riders that are new to mountain biking or simply want a low-hassle, low-cost bike to explore off-road.

The Bolinas Ridge 2 is our upgraded Bolinas, stepping up the fun and the components. The Bolinas Ridge 2 gets an upgrade to Clark’s Hydraulic disc brakes and features a SR/Suntour suspension fork, reliable and grippy off-road tires and plenty of kick-ass Marin components. The Bolinas is ideal to break out onto the trails and push your own boundaries.

Depending on size, the Bolinas Ridge comes with either smaller 27.5” (sizes XS to M) wheels or larger (sizes M to XL) wheels to guarantee a perfect fit.

Shimano Altus 3×8 drivetrain

Clark’s hydraulic disc brakes

SR/Suntour XCM DS fork

Specification

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
Rim	Marin, Double Wall Alloy
Rear Hub	Forged Alloy, Disc, 32H
Front Hub	Forged Alloy, Disc, 32H
Spokes	Black Stainless Steel
Tyres	MTB, 27.5/29×2.25”
Rear Derailleur	Shimano Altus, 8-Speed
Front Derailleur	Shimano FD-TY700
Shifters	Shimano Altus 3×8-Speed
Crankset	Alloy Crank, Steel Chainrings, 42/34/24T
Bottom Bracket	Sealed Cartridge Bearings, Square Taper
Chain	KMC Z8
Cassette	SunRace 8-Speed, 11-34T
Front Brakes	Clark’s Clout Hydraulic Disc, 160mm Rotor
Rear Brakes	Clark’s Clout Hydraulic Disc, 160mm Rotor
Handlebar	Marin 31.8 Riser, 12mm Rise, 780mm Width
Stem	Marin Alloy, 31.8mm, 45mm
Grips	Marin MTB, Closed End
Headset	FSA No.10-P
Seatpost	Marin Alloy, 27.2mm
Saddle	Marin MTB
Pedals	Nylon Platform
Maximum Rider Weight	136kg Rider + 14kg Luggage = Total 150kg

Specifications are subject to change without notice

Size Guide

Frame Size	Minimum Height	Maximum Height
X Small	146cm (4’10”)	157cm (5’2”)
Small	157cm (5’2”)	165cm (5’5”)
Medium (27.5)	165cm (5’5”)	173cm (5’8”)
Medium (29)	168cm (5’6”)	175cm (5’9”)
Large	175cm (5’9”)	183cm (6’0”)
X Large	183cm (6’0”)	191cm (6’3”)

We have developed our size guide from our selling experience and it may differ from the manufacturers guide. Please note, this is only a guide and if you have any concerns over sizing please get in contact

Geometry

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Frame Size	XS	S	M (27.5)	M (29)	L	XL
A- Stack	580.8	585.5	590	616	620.5	625
B- Reach	400	415	430	430	445	465
C- Head Tube Angle	68.5°	68.5°	68.5°	68°	68°	68°
D- Head Tube Length	100	105	110	110	115	120
E- Seat Tube Angle	74°	74°	74°	74°	74°	74°
F- Seat Tube Length	330	381	431	431	481	520
G- Top Tube Effective	566.5	583	599.2	606.6	623	644.2
H- BB Height	307	307	307	311.5	311.5	311.5
I- BB Drop	48	48	48	61	61	61
J- Chain Stay	430	430	430	455	455	455
K- Wheel Base	1084.5	1101.3	1118.2	1160	1177	1199
L- Stand Over Height	649.11	663.03	706.24	716.44	744.89	773.66
M- Fork Offset	46	46	46	46	46	46
Seat Post Diameter	27.2	27.2	27.2	27.2	27.2	27.2
Bar Width	780	780	780	780	780	780
Stem Length	45	45	45	45	45	45
Crank Length	170	170	170	170	170	170

Want to compare the size of your current bike to this one? Read our Reach and Stack guide here.