NEW 2026 Marin Bolinas Ridge 1 ST Step Through Hardtail Mountain Bike

With a lightweight aluminum frame, a trail-capable suspension fork, MTB tires and all-condition disc brakes, the Bolinas Ridge XC range of bikes has everything you need to break out onto the trails and push your own boundaries.

The Bolinas Ridge ST 1 is the best value model in the ST 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. This new step-thru frame is only available with 27.5 wheels across the XS - M frame size to keep it as ergonomically accessible as is possible.

BUILD KIT:

• Frame: Series 1 6061 Aluminum, 27.5"/29" wheels, low standover, 68mm BB shell, 135mm forged dropouts, chainstay-mounted disc brakes
• Front Derailleur: Shimano FD-TX600
• Front Suspension: SR Suntour XCE Disc, 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
• Tires: MTB, 27.5/29x2.25"
• Rear Derailleur: Shimano Tourney, 7-Speed
• 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
• Front Brakes: Tektro MDM280 Mechanical Disc, 160mm Rotor
• Rear Brakes: Tektro MDM280 Mechanical Disc, 160mm Rotor
• Brake Levers: Shimano with Integrated Shifters
• 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

SIZING: Marin recommends the following sizes based on rider height. Please note this is an approximate range and the buyer is responsible for verifying the fit before purchase.

• X-Small: 4'11" - 5'3"
• Small: 5'3" - 5'6"
• Medium: 5'6" - 5'10"