Marin Muirwoods 29er Bike

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Marin Muirwoods 29er combines the agility of a mountain bike with the fluid feel of high-volume tires for fun zipping about in an urban setting.

  • Features

    • Muirwoods's responsiveness, size and understated, don't-steal-me good looks also make it an excellent mount for tooling around campus
    • Frame's front triangle is made of double-butted steel for strength and vertical flex; a flexible frame is inherently more forgiving on city roads
    • Seat and chain stays are designed for vertical stiffness, which enhances acceleration and climbing power
    • Mountain-bike-style frame geometry weaves in and out of city traffic like a snake through dry terrain
    • Plus, it helps you deliver massive torque to the rear wheel to boost you up those serious San Francisco-grade hills
    • Transfer power efficiently from thigh to wheel through the Truvativ 48/38/28 crankset, sealed cartridge bottom bracket and 8-speed, 11-32 cassette
    • Shimano shifters and derailleurs provide snappy, intuitively simple transition through all 24 gears
    • Alloy 3 finger brakes and Avid BB5 disc brakes provide controlled, responsive deceleration and the power to stop fast in unpredictable traffic
    • Wheelset features durable, lightweight rims and smooth-rolling, double-sealed hubs; narrow, puncture-resistant 29 in. tires minimize road resistance
    • WTB Speed V Sport SE saddle is ergonomically designed to prevent riding discomfort and numbness; streamlined design lets you shift weight quickly
    • Composite platform pedals with alloy cages enhance your pedaling efficiency
    • Specs and images are subject to change


    This bike comes with Coast to Coast Support, which includes:
    • 1 year of free adjustments (see more below)
    • In-store bike assembly
    • Pickup in store or curbside
    • Bike experts available at 170+ bike shops
    REI Co-op Members get more:
    • Free flat tire repairs (labor only; parts not included)
    • 20% off shop services
    More about our free adjustments:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.

    View all Marin Hybrid Bikes
  • Technical Specs

    Best Use

    Bike Commuting


    Double-butted chromoly


    Chromoly rigid fork


    Truvativ IsoFlow C, 48/38/28

    Bottom Bracket

    Truvativ sealed cartridge


    Shimano Alivio

    Front Derailleur

    Shimano C-100

    Rear Derailleur

    Shimano Deore

    Rear Cogs

    Shimano HG30, 11-32 8-speed


    Avid BB5 disc

    Brake Levers

    Alloy 3 finger


    Alex TD-19

    Front Hub

    Alloy double-sealed

    Rear Hub

    Alloy double-sealed


    Continental Town Ride, 29x1.6


    Double-butted alloy


    Marin alloy threadless

    Seat Post

    Alloy micro-adjustable


    WTB Speed V Sport SE


    Composite with alloy cage


    Ritchey LB threadless





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