Cannondale Trail SE 2 Bike - 2021

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Find your love of riding trails with the Cannondale Trail SE 2 bike. Its new-school handling and mountain-ready components create a confidence-inspiring and fun ride on the trails and around town.

  • Features

    • SmartForm C2 alloy construction with high-performance tube shapes, weight-saving butting and seamless double-pass welds delivers a frame that is light, durable and lively
    • Progressive frame design blends the latest Trail-ready geometry with dropped seatstays for improved ride quality and a leaner look
    • Features a RockShox 35 Silver R 120 mm fork
    • SAVE micro-suspension delivers a smoother, more controlled ride thanks to strategically engineered flex zones built into the frame's rear triangle
    • A slacker-than-average 66.5° head angle results in even more stable handling, giving you extra confidence when the trails point downhill
    • SRAM SX Eagle rear derailleur delivers smooth shifting through all 12 gears
    • Enabled by Boost spacing, Trail's short chainstays position the rear wheel optimally for climbing traction and agile handling
    • Reliable hydraulic disc brakes provide great stopping power and control
    • Features a tapered steerer tube for compatibility with the best suspension forks
    • Shift cables and dropper cable route cleanly through the StraightShot window in the down tube for easy maintenance; rear brake line is secured outside the frame
    • All Trail SE sizes come with 29 in. wheels
    • Integrated wheel sensor helps track your activity—like speed, distance and calories burned—registers your bike and reminds you of needed service via the free Cannondale app
    • A sleek, hidden mount makes it easy to add a kickstand for around-town convenience
    • 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

    Bike Suspension

    Front Suspension


    Rock Shox 35 Silver R; 51 mm offset

    Fork Travel

    120 millimeters


    SRAM SX Eagle Power Spline, 30T

    Bottom Bracket

    Truvativ Power Spline



    Rear Derailleur

    SRAM SX Eagle

    Rear Cogs

    11-50T, 12-speed

    Number of Gears

    12 gear(s)

    Brake Type

    Hydraulic Disc Brake


    Shimano MT410 hydraulic disc, 180/160 mm RT10 rotors

    Brake Levers

    Shimano M4100 hydraulic disc


    WTB STX i25 TCS, 32 h, tubeless ready

    Front Hub

    Shimano MT400, 15 x 110 mm thru axle

    Rear Hub

    Shimano MT400 12 x 148 mm thru axle

    Wheel Size

    29 inches


    Front: Maxxis Minion DHF, 29 x 2.5 in. Exo casing, tubeless ready; rear: Maxxis High Roller II, 29 x 2.3 in., EXO casing, tubeless ready

    Tire Width

    2.5 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

    TranzX Dropper, 31.6, internal routing, 130 mm


    Cannondale Trail, 170 mm, steel rails


    Cannondale Platform


    Integrated sealed bearing, tapered




    33 lbs. 8 oz.

    Bike Weight

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



    Dropper Post


  • Size Chart

    XS S M L XL
    Height Range 4'6"-5'2" 5'1"- 5'4" 5'4"- 5'8" 5'7"- 6'0" 6'0"- 6'3"
    Reach 36.7 38.5 41.5 44.0 46.5
    Stack 59.3 60.9 61.9 62.9 63.8
    Effective Top Tube 54.1 56.6 59.8 62.6 65.3
    Seat Tube Center-Top 36.0 39.0 44.0 47.0 52.0
    Standover Height 72.9 75.4 78.8 80.9 84.3
    Head Tube Length 9.0 9.0 10.0 11.0 12.0
    Head Tube Angle (degrees) 66.5 ° 66.5 ° 66.5 ° 66.5 ° 66.5 °
    Seat Tube Angle (degrees) 74.0 ° 74.0 ° 74.0° 74.0 ° 74.0 °
    Bottom Bracket Height 31.7 31.8 31.8 31.8 31.8
    Wheelbase 108.3 111.1 114.4 117.3 120.2
    Chainstay 43.5 43.5 43.5 43.5 43.5
    Fork Offset 5.1 5.1 5.1 5.1 5.1

    Sizing Notes

    Measurements are stated in centimeters unless otherwise indicated.

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