Bike Comparison
    MSRP
    ($823)$329
    Where to Buy
    $1

    At

    $329

    At Trek

    Category
    Mountain YouthMountain Youth
    Weight
    30.4 lbs20.3 lbs
    3.0
    AluminumAluminum
    Fork
    Suntour XCRSteel
    Wheels
    AluminumAluminum
    27.5″20″
    Brakes
    Hydraulic DiscCoaster
    Groupset
    Altus, Shimano
    Drivetrain
    2 × 9
    Suspension
    HardtailRigid
    Front Travel
    120mm-
    Brand Site

    whyte.bike

    trekbikes.com

    Summary
    The Whyte 604 COMPACT v2 is a 27.5″ aluminum frame mountain youth bike with modest components and hydraulic disc brakes.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Handling
    nimblestable
    2021 604 COMPACT v2
    Other Mountain Youth 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)

    27 mph

    2021 604 COMPACT v2

    Highest gear

    (descending)

    Spec Level

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

    Geometry
    Specs
    Frame

    6061 Alloy, Hydro Formed T6 Aluminium, Multi Butted, Get A Grip Seat Clamp System, Internal Cable Routing with BBX, Chainstay Post Mount Dropouts

    Alpha Silver Aluminum, 20'' kids' frame size

    Fork

    SR Suntour XCR-LO 27.5", 120mm Travel, Hydro Lockout, Fixed Rebound Damping, Black stanchions

    Kid's steel fork

    Shock

    N/A

    Bottom Bracket

    Square Interface, Cartridge Bearings, 73mm

    Square taper, 68mm, sealed cartridge

    Headset

    FSA No.10, Semi Integrated, 1 1/8" Caged Bearings

    Adjustable ball bearing, threadless

    Stem

    Whyte Alloy, XS/S 35mm, M 45mm Extension

    Bontrager Approved alloy, 25.4mm clamp, 15 degree rise, 60mm

    Handlebar

    Whyte 6061 Alloy, 30mm Rise, 31.8mm, 740mm Wide

    Kids' steel, 25.4mm clamp, 40mm rise, 560mm width

    Saddle

    Whyte Custom, Compact Fit

    Kids' padded, integrated seatpost, with handle

    Seatpost

    Whyte 6061 Alloy, 12mm Offset, 30.9mm x 350mm, 2 Bolt Clamp

    Pedals

    Fibre Reinforced Composite Platform

    Kids' Satellite, 9/16 thread

    Grips

    Whyte Lock-on V Grip

    Kids' grip, 107mm width

    Groupset
    Rear Derailleur

    Shimano Altus RD-M2000-SGS, 9 Speed

    Front Derailleur

    Shimano Altus FD-M2020

    Crank

    Shimano FC-MT101, Double 36-22, 9 Speed

    ProWheel alloy, 32T steel ring w/double guard, 127mm length

    Shifters

    Shimano Altus SL-M2010, 9 Speed

    Cassette

    Shimano CS-HG-200, 11-36, 9 Speed

    Chain

    SunRace, 9 Speed

    HV410, 1/2x1/8

    Brakes

    Tektro HD-M275, Hydraulic, 180mm Disc

    Alloy linear-pull

    Brake Levers

    Tektro HD-M275

    Kids', alloy

    Wheels
    Rims

    Whyte Trail 25, Tubeless Compatible, 32 Hole

    Alloy 20'', 32-hole, schrader valve

    Spokes

    2.0mm, PG, Black Stainless, Brass Nipples

    Front Hub

    Alloy, Cup & Cone, Double Seal, 32 Hole

    Steel, 100mm, nutted axle

    Rear Hub

    Alloy, Cup & Cone, Double Seal, 32 Hole

    Coaster brake, 19T, 110mm bolt-on

    Tires

    WTB Trail Boss Comp 27.5" x 2.25" Front, WTB Ranger Comp 27.5" x 2.25" Rear

    Bontrager XR1, wire bead, 27 tpi. 20x2.25''

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