Bolinas Ridge 1 ST 27.5 2026

Step-through access version of Marin's Bolinas ridge, mountain bike dna in a comfortable and versatile package.

The perfect blend of performance, value and fun, the 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 line features durable double wall rims, serviceable cassette freehubs, proven Shimano drivetrains, and readily available parts that are built to last.

The Bolinas Ridge 1 is the best value model in the Bolinas family, offering bags of bang for very few bucks. Components include powerful Tektro mechanical disc brakes, an SR/Suntour suspension fork and reliable and grippy off-road tires.

SIZING - 

• XS: 4'10 - 5'2
• S: 5'2 - 5'5
• M: 5'5 - 5'9

SPECIFICATION -

Frame - Series 1 6061 Aluminium, 27.5”/29" Wheels, Low Standover, 68mm BB shell, 135mm Forged Dropouts, Chainstay Mounted Disc Brakes
Front Suspension - SR Suntour XCE Disc, 100mm Travel, Preload Adjustment, 46mm Offset
Rim - Marin, Double Wall Alloy
Hub Rear - Forged Alloy, Disc, 32H
Hub Front - Forged Alloy, Disc, 32H
Spokes - Black Stainless Steel
Tyres - MTB, 27.5/29x2.25"
Derailleur Rear - Shimano Tourney, 7-Speed
Derailleur Front - Shimano FD-TX600
Shift Lever - Shimano Tourney 2x7-Speed
Crankset - Alloy Crank, Steel Chainrings, 36/22T
Bottom Bracket - Sealed Cartridge Bearings, Square Taper
Chain - KMC Z8
Cassette - Shimano, CSHG200, 7-Speed, 11-32T
Brakes Front - Tektro MDM280 Mechanical Disc, 160mm Rotor
Brakes Rear - Tektro MDM280 Mechanical Disc, 160mm Rotor
Brake Levers - Shimano w/ Integrated Shifters
Handlebar - Marin 31.8 Riser, 12mm Rise, 780mm Width, XS/S models have 740mm 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