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Built to raise your game and ignite a passion for the trail, the Cannondale Trail 4 SE 29 bike thrives in the mountains and is ready for anything.

  • Features

    • SR Suntour XCR suspension fork with lockout delivers 120 mm of travel to help smooth out rough trails and keep you in control
    • 1 x 10-speed Shimano Deore M4100 shifting with 30-tooth FSA Alpha Drive crankset delivers consistent performance over rough terrain
    • Shimano MT200 hydraulic disc brakes provide reliable stopping power in all conditions
    • SmartForm C2 Alloy frame with SAVE micro-suspensions delivers a smooth, controlled ride, thanks to strategically engineered flex zones built into the frame's rear triangle
    • Tapered head tube is designed for the 1-1/2 to 1-1/8 in. tapered steerer tubes found on the best suspension forks
    • Slack 68° head angle creates exceptionally stable handling so you can charge descents with confidence
    • BOOST rear axle spacing and short chainstays optimally position the rear wheel for climbing traction and agile handling
    • Shift and dropper post cables route cleanly thought the StraightShot window in the down tube, while the rear brake line is secured outside the frame
    • Compatible with 27.2 mm dropper posts (not included)
    • Specs and images are subject to change


    Free Adjustment Period:
    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 Cannondale Hardtail Mountain Bikes
  • Technical Specs

    Best Use

    Mountain Biking

    Mountain Bike Style


    Bike Frame Material



    Smartform C2 Alloy, SAVE dropped seatstays; post-mount disc

    Bike Suspension

    Front Suspension


    SR Suntour XCR coil, 120 mm travel, 46 mm offset

    Fork Travel

    120 millimeters


    FSA Alpha Drive, 30T

    Bottom Bracket

    Cartridge, square taper, BSA 73


    Shimano Deore M4100, 10-speed

    Rear Derailleur

    Shimano Deore M4100

    Rear Cogs

    Shimano Deore M4100, 11-46, 10-speed

    Number of Gears

    10 gear(s)

    Brake Type

    Hydraulic Disc Brake


    Shimano MT200 hydraulic disc, 180/160 mm RT10 rotors

    Brake Levers

    Shimano MT200 hydraulic disc


    WTB STX i25 TCS, 32h, tubeless ready

    Front Hub

    Shimano MT400, 15 x 110 mm thru axle

    Rear Hub

    Shimano MT400 12 x 148 mm BOOST thru axle

    Wheel Size

    29 inches


    Front: WTB Breakout, 29 x 2.3 in.; Rear: WTB Trail Boss, 29 x 2.25 in.

    Tire Width

    2.25 inches

    2.3 inches

    Handlebar Shape

    Riser Bar


    FSA Alloy Riser, 15 mm rise, 760 mm


    Cannondale 3, 6061 Alloy, 31.8, 0 deg.

    Seat Post

    Cannondale C3, 6061 Alloy, 27.2 x 350 mm (S), 400 mm (M-XL)


    Cannondale Trail, 170 mm, steel rails


    Cannondale Platform


    Integrated Sealed Bearing, Tapered


    KMC X10, 10-speed


    31 lbs. 4.8 oz.

    Bike Weight

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



  • Size Chart

    S M L XL
    Height Range 5'1" - 5'4" 5'4" - 5'8" 5'7" - 6'0" 6'0" - 6'3"
    Reach 38.5 41.5 44.0 46.5
    Stack 60.9 61.9 62.9 63.8
    Effective Top Tube 56.6 59.8 62.6 65.3
    Seat Tube Center-Top 39.0 44.0 47.0 52.0
    Standover Height 75.4 78.8 80.9 84.3
    Head Tube Length 9.0 10.0 11.0 12.0
    Head Tube Angle (degrees) 66.5 66.5 66.5 66.5
    Seat Tube Angle (degrees) 72.5 72.6 72.6 72.7
    Bottom Bracket Height 31.8 31.8 31.8 31.8
    Wheelbase 111.1 114.4 117.3 120.2
    Chainstay 43.5 43.5 43.5 43.5
    Fork Offset 5.1 5.1 5.1 5.1

    Sizing Notes

    Measurements are stated in centimeters unless otherwise indicated.

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