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

The Bolinas Ridge 2 ST is our upgraded Bolinas, stepping up the fun and the components. The Bolinas Ridge ST 2 gets an upgrade to Tektro Hydraulic disc brakes and features a SR/Suntour suspension fork and a wide range Shimano 1 x 8 Essa drivetrain and gearing.

This new step-thru frame is only available with 27.5 wheels across the XS - M frame size to keep it as ergonmically accessible as is possible.

• Download owner's manual (PDF)

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• Specifications
• Technology
• Service

Specifications

• Frame

  Series 1 6061 Aluminum, 27.5”/29" Wheels, Low Standover, 68mm BB shell, 135mm Forged Dropouts, Chainstay Mounted Disc Brakes

• Front Suspension

  SR Suntour XCM DS, 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

• Tires

  MTB, 27.5/29x2.25"

• Derailleur Rear

  Shimano Essa, 8-Speed

• Derailleur Front

  n/a

• Shift Lever

  Shimano Altus 1x8-Speed

• Crankset

  Alloy Crank, Steel Narrow/Wide Chainring, 32

• Bottom Bracket

  Sealed Cartridge Bearings, Square Taper

• Chain

  KMC Z8

• Cassette

  Shimano 8-Speed, 11-45T

• Brakes Front

  Tektro M280 Hydraulic Disc, 160mm Rotor

• Brakes Rear

  Tektro M280 Hydraulic Disc, 160mm Rotor

• Brake Levers

  Tektro Hydraulic

• 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

Specifications, pricing, and availability are subject to change without notice.

Technology

SERIES 1 ALUMINUM FRAME

The Bolinas Ridge series has a disc specific Series 1 6061 aluminum
frame with a replaceable derailleur hanger and an integrated
headset.

Learn More

29” OR 27.5” WHEELS

The Bolinas Ridge has a growing wheel size for the best fit and
performance with the choice of 27.5” or 29” platforms on the size M,
27.5” wheels on size S, and 29” wheels on sizes L, XL, and XXL.

DISC BRAKES

All Bolinas Ridge models feature disc brakes for minimal
maintenance and all-conditions stopping power.

TRAIL READY COMPONENTS

The Bolinas Ridge line features durable double wall rims, serviceable
cassette freehubs, proven Shimano drivetrains, and readily available
parts that are built to last.