Marin Bolinas Ridge 1 ST Step Through

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"