Bike Comparison
    MSRP
    $329
    Where to Buy
    $1

    At

    $329

    At Trek

    Category
    Mountain YouthMountain Youth
    Weight
    30.5 lbs20.3 lbs
    4.0
    AluminumAluminum
    Fork
    X-Fusion RC32 (air)Steel
    Wheels
    AluminumAluminum
    Wheel Size
    26″20″
    Brakes
    Hydraulic DiscCoaster
    Groupset
    X4, X5
    Drivetrain
    1 × 9
    Suspension
    FullRigid
    Front Travel
    130mm-
    Rear Travel
    130mm-
    Brand Site

    dartmoor-bikes.com

    trekbikes.com

    Summary
    The Dartmoor Blackbird Junior is a 26″ aluminum frame mountain youth bike with mid-range components and hydraulic disc brakes.
    Similar Bikes
    Accessories
    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)

    20 mph

    2020 Blackbird Junior

    Highest gear

    (descending)

    Geometry
    Specs
    Frame

    Aluminum

    BB StandardBSA, 73mm, Threaded

    Alpha Silver Aluminum, 20'' kids' frame size

    BB StandardBSA, 73mm, Threaded

    Fork

    X-Fusion RC32 27.5", 9mm axle, tapered

    Kid's steel fork

    Shock

    X-Fusion O2 Pro R, 165mm x 38mm

    Bottom Bracket

    BSA, 73mm, external bearings

    Square taper, 68mm, sealed cartridge

    Headset

    Dartmoor Blink

    Adjustable ball bearing, threadless

    Stem

    Dartmoor Beetle, 33mm

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

    Handlebar

    Dartmoor Tornado 710mm, 31.8mm diameter

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

    Saddle

    Dartmoor Trail Junior

    Kids' padded, integrated seatpost, with handle

    Seatpost

    6061 alloy, 300mm

    Pedals

    Dartmoor Stream OEM

    Kids' Satellite, 9/16 thread

    Grips

    Dartmoor Maze Lite, without lock ring

    Kids' grip, 107mm width

    Groupset
    Rear Derailleur

    SRAM X4, 9-speed

    Front Derailleur

    None

    Crank

    2 piece, BCD 76mm spider

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

    Shifters

    SRAM X5, 9-speed

    Cassette

    SunRace CSM980, 11-40 tooth, 9-speed

    Chain

    SunRace CNM94

    HV410, 1/2x1/8

    Chain Guide

    None

    Brakes

    Tektro HD-M275, 180mm rotors

    Alloy linear-pull

    Brake Levers

    Tektro HD-M275

    Kids', alloy

    Wheels
    Rims

    Dartmoor Tomcat 26", 32 hole, F/V

    Alloy 20'', 32-hole, schrader valve

    Front Hub

    Front: Sealed bearings, 9mm quick release, Rear: Dartmoor Reel, 142mm x 12mm

    Steel, 100mm, nutted axle

    Rear Hub

    Front: Sealed bearings, 9mm quick release, Rear: Dartmoor Reel, 142mm x 12mm

    Coaster brake, 19T, 110mm bolt-on

    Tires

    WTB Vigilante 26" x 2.3", Comp

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

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