Co-op Cycles DRT 2.1 Mountain Bike

$1,278.93Compared to $1,599.00*
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Color: Stone
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Members get an estimated 10% back on this item as a part of your annual .

To buy,  sign in as an REI Co-op Member or join now.
Join the co-op today to get access to a lifetime of benefits.

Slay the singletrack: The Co-op Cycles DRT 2.1 mountain bike has plenty of gears for climbing plus big wheels, big rubber and a dropper seatpost so you can flow with confidence on technical trails.

  • Features

    • 1 x 12 SRAM SX Eagle drivetrain eliminates the front derailleur to enable swift, streamlined shifting and reduced overall weight
    • Front suspension features 120mm travel on XS–S and 140mm on M–XL
    • X-Fusion Manic dropper seatpost with remote and 125mm of travel delivers quick, smooth ups and downs so you're ready to handle whatever the trail throws at you
    • 27.5+ tires provide lots of traction, improving handling and offering a smoother ride on even the roughest of terrain
    • Wheels are ready for a tubeless tire setup; tubeless-compatible tires not included
    • Tektro Auriga hydraulic disc brakes deliver reliable stopping power on- or off-road and in variable weather conditions
    • Front and rear thru axles provide added rigidity
    • Bicycle weight limit is 300 lbs. total, including rider + all gear carried on the bike and on the rider's body
    • 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 the Co-op Cycles DRT Product LineView all Co-op Cycles Hardtail Mountain Bikes
  • Technical Specs

    Best Use

    Mountain Biking

    Mountain Bike Style



    Co-op Cycles 6061 double-butted aluminum

    Bike Suspension

    Front Suspension


    Suntour SR AIR-Boost

    Fork Travel

    XS: 120 millimeters

    S: 120 millimeters


    SRAM SX Eagle, 30ST

    Bottom Bracket



    SRAM SX Eagle, 12-speed

    Rear Derailleur

    SRAM SX Eagle, 12-speed

    Rear Cogs

    SRAM Eagle, 12-speed, 11-50 T

    Number of Gears

    12 gear(s)

    Brake Type

    Hydraulic Disc Brake


    Tektro Auriga hydraulic disc

    Brake Levers

    Tektro Auriga hydraulic


    WTB ST i35 TCS 2.0 (Tubeless Ready)

    Front Hub


    Rear Hub

    Shimano Alivio

    Wheel Size

    27.5+ inches


    WTB Ranger Comp 27.5 x 2.8 in.

    Tire Width

    2.8 inches

    Handlebar Shape

    Riser Bar


    Co-op Cycles AL6061 double-butted riser bar


    Co-op Cycles, 6061 aluminum

    Seat Post

    X Fusion Manic dropper W/remote; 125mm travel


    WTB Volt Sport


    Wellgo aluminum platform


    Internal headset


    SRAM SX Eagle, 12 speed


    33.79 pounds

    Bike Weight

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



    Dropper Post


  • Instructions & Manuals

  • Size Chart

    Height Range5' - 5' 3"5' 3" - 5' 6"5' 6" - 5' 9"5' 9" - 6'6' - 6' 3"
    Effective Top Tube569594623655685
    Seat Tube Center-Top360395430465500
    Standover Height703714728753778
    Head Tube Angle (degrees)6868686868
    Seat Tube Angle (degrees)7272727272

    Sizing Notes

    All measurements are stated in millimeters or degrees unless otherwise indicated.

    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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