Bike Comparison
    Checkpoint AL 42020 Trek
    Recommended
    MSRP
    $1,599
    Where to Buy
    —
    $1

    At

    Category
    		Gravel
    Weight
    		23.3 lbs
    3.4
    Frame
    		Aluminum
    Fork
    		Carbon
    Wheels
    		Aluminum
    Wheel Size
    		700c
    Clearance
    		38c
    Brakes
    		Hydraulic Disc
    Motor
    Battery
    Groupset
    		Tiagra
    Drivetrain
    		2 × 10
    Brand Site

    trekbikes.com

    Summary
    		The Trek Checkpoint AL 4 is an aluminum frame gravel bike with mid-range components and hydraulic disc brakes.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    Terrain
    smoothrugged
    Checkpoint AL 4
    Other Gravel bikes
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    39 mph

    Checkpoint AL 4

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    Checkpoint AL 42020 Trek
    Frame

    200 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, rack & fender mounts, flat mount disc, 142x12mm thru axle

    BB Standard: BSA, 68mm, Threaded

    Tire Clearance: 38c

    Fork

    Checkpoint carbon, tapered alloy steerer, rack & fender mounts, flat mount disc, 12x100mm thru axle

    Bottom Bracket

    Shimano RS500, 68mm, threaded external

    Headset

    FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom

    Stem

    Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 100mm length

    Handlebar

    Size: 56, Bontrager Comp VR-C, alloy, 31.8mm, 100mm reach, 124mm drop, 42cm width; Size: 58, Bontrager Comp VR-C, alloy, 31.8mm, 100mm reach, 124mm drop, 44cm width

    Saddle

    Bontrager Arvada Comp, steel rails, 138mm width

    Seatpost

    Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length

    Groupset
    Rear Derailleur

    Shimano Tiagra 4700, long cage, 34T max cog

    Front Derailleur

    Shimano Tiagra 4700, 31.8mm clamp

    Crank

    Size: 56, Shimano Tiagra 4700, 50/34, 172.5mm length; Size: 58, Shimano Tiagra 4700, 50/34, 175mm length

    Shifters

    Shimano Tiagra R4725, short reach lever, 10 speed

    Cassette

    Shimano HG500, 11-32, 10 speed

    Chain

    Shimano Tiagra HG54, 10 speed

    Brakes

    Shimano Tiagra hydraulic disc, flat mount

    Wheels
    Rims

    Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21mm width, presta valve

    Spokes

    Size: 56, 14g stainless steel; Size: 56, 58, 14g aero stainless steel, black

    Front Hub

    Formula RX-512 alloy, 6-bolt, 100x12mm thru axle

    Rear Hub

    Formula RX-142 alloy, 6-bolt, Shimano 11-speed freehub, 142x12mm thru axle

    Tires

    Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c

    Disc Rotors

    Shimano RT86, 160mm, 6-bolt

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