Zize Bikes 29er Max 2.0 Bike

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Take on paved roads, local bike paths or gravel trails with the Zize 29er Max 2.0 bike. It's built for comfort with a cushy saddle, wide tires and an adjustable stem—and it can carry 450 lbs.

  • Features

    • Durable bike is factory-tested to support up to 450 lbs. and is designed specifically for heavy riders, enabling you to move comfortably and easily around town
    • Each component is selected for significantly higher strength and durability than is typical in standard bikes to create a balanced, sturdy ride
    • Aircraft-grade chromoly frame with TIG welding is exceptionally strong and built to last
    • Wide, upright handlebar with a substantial, adjustable stem allows for an upright cycling position around town and on the trail
    • Wider, shock-absorbing seat uses a double-clamped seatpost to keep the saddle in place
    • Shimano freewheel provides 8 internal gears for smooth shifting; internally geared hub helps make your rides more energy-efficient and reduces chain slippage
    • High-strength cranks withstand increased pedaling force
    • Mechanical disc brakes provide superior stopping power
    • 36 spokes and double-wall rims increase wheel strength
    • Wide tires (29 x 2.1 in.) with a high thread count are ideal for multi-surface use, offering stability in softer conditions and speed on smoother surfaces
    • Built to ride for many years, this bike was designed and tested by a heavy person in the USA
    • 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 Zize Bikes Hybrid Bikes
  • Technical Specs

    Best Use

    Urban Cycling

    Recreational Cycling


    Chromoly steel



    Bike Suspension

    No Suspension


    Chromoly steel

    Fork Travel

    Not Applicable


    Chuan Wei

    Bottom Bracket



    Shimano SL8S31

    Rear Cogs

    SMN SPL Shimano 8-speed internally geared hub

    Number of Gears

    8 gear(s)

    Internally Geared


    Brake Type

    Mechanical Disc Brake


    Alhonga HJ-MD11

    Brake Levers

    Alhonga HF-213ADV


    Shining MT-66

    Front Hub

    Shimano HBTX505

    Rear Hub

    Shimano SGC60018D

    Wheel Size

    29 inches


    Kenda K1047 29 x 2.1 in.

    Tire Width

    2.1 inches

    Handlebar Shape

    Riser Bar


    Kalloy HB-RB11


    Kalloy AS820

    Seat Post

    Kalloy SP359


    Foming DDK-D050




    Tien Hsin No.9M/Cup/TH


    KMC, 1/2 x 3/32 in. 110L Brown/Brown


    48 pounds

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.



  • Size Chart

    S M L
    Height Range 5'7" - 6' 6' - 6'4" 6'4" - 7'

    How we measure bikes

    1. Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
    2. Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
    3. Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
    4. Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
    5. Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
    6. Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
    7. Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
    8. Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
    9. Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
    10. Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
    11. Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
    12. Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
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