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  • Checkpoint AL 4
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Specifications

  • Frameset

    Frame
    Alpha 200 series aluminum, tapered head-tube, flat-mount disc brakes, 12mm thru-axle, internal cable routing, w/rack mounts and hidden fender mounts
    Fork
    Checkpoint carbon disc, tapered steerer, flat mount disc brakes, rack mounts, hidden fender mounts, 12mm thru axle

  • Wheels

    Front hub
    Formula alloy disc, 12mm thru-axle, 24h
    Rear hub
    Formula alloy disc, 12mm thru-axle, 24h
    Rims
    Bontrager Affinity, Tubeless Ready, 24h
    Tires
    Bontrager R1 Hard-Case Lite, 700x32c
    Max tire size
    38c Bontrager tires (with at least 4mm of clearance to frame)

  • Drivetrain

    Shifters
    Shimano Tiagra, 10 speed
    Front derailleur
    Shimano Tiagra
    Rear derailleur
    Shimano Tiagra
    Crank
    Shimano Tiagra, 50/34 (compact)
    Bottom bracket
    Sealed cartridge
    Cassette
    Shimano Tiagra, 11-32, 10 speed
    Chain
    Shimano Tiagra
    Pedals
    Not included

  • Components

    Saddle
    Bontrager Arvada Comp, steel rails
    Seatpost
    Bontrager Approved, alloy, 27.2mm
    Handlebar
    Bontrager Comp VR-C, 31.8mm
    Grips
    Bontrager tape
    Stem
    Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts
    Headset
    Integrated, cartridge bearing, sealed, 1-1/8˝ top, 1.5˝ bottom
    Brakeset
    Shimano RS405 flat mount hydraulic disc  

  • Weight

    Weight
    56cm - 10.56 kg / 23.28 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 275 pounds (125 kg).
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

Sizing & fit

The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

 

Rider Height

Inseam

All measurements provided in cm unless otherwise noted.

Frame size number A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
44 cm 39.0 75.5° 9.0 70.6° 50.5 27.5 8.0 43.0 50 7.2 100.2 68.5 36.8 53.1
49 cm 44.0 75.0° 10.0 71.4° 51.8 27.7 7.8 43.0 50.0 6.6 100.5 72.3 37.3 54.1
52 cm 47.5 74.0° 12.0 71.7° 53.7 27.7 7.8 43.0 50.0 64.6 101.1 75.5 37.6 56.1
54 cm 50.0 73.5° 13.5 71.8° 54.8 27.9 7.6 43.0 50.0 6.4 101.8 77.5 37.8 57.4
56 cm 52.5 73.0° 15 72.2° 56.0 27.9 7.6 43.0 50.0 6.1 102.1 79.4 38.0 59.0
58 cm 54.8 73.0° 17.0 72.3° 56.8 28.1 7.4 43.0 50.0 6.1 102.8 81.6 38.2 60.7
61 cm 56.7 73.0° 20.0 72.6° 58.1 28.1 7.4 43.0 50.0 5.9 103.9 83.7 38.6 63.7

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