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2018

Superfly 20

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$409.99 Model 17163
Superfly 20 is a great first step for young riders looking to try mountain biking. It has an Alpha Silver Aluminum frame that's lighter and easier to maneuver than most kids' bikes, and 20˝ wheels that make it a great fit for kids who are 45-52˝ tall. Simple, quality components make Superfly 20 an ideal way for your kids to ride off-road with comfort and control.
Superfly 20 is a great first step for young riders looking to try mountain biking. It has an Alpha Silver Aluminum frame that's lighter and easier to maneuver than most kids' bikes, and 20˝ wheels that make it a great fit for kids who are 45-52˝ tall. Simple, quality components make Superfly 20 an ideal way for your kids to ride off-road with comfort and control.
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It's right for you if...

You want your little ones to experience real mountain biking with real mountain bike parts. You want an entry-level MTB that's simple and easy to handle so you can all ride the trails as a family and set the foundation for a lifelong love of adventure. 

The tech you get

This bike isn't just a bunch of adult parts slapped onto a small frame. All components on this bike feature our Dialed Fit. That means you're getting the right crank length and the right saddle, bars, and grips for kids. It also has fast and sturdy Bontrager XR1 tires, and a simple 6-speed twist shift drivetrain to keep kids rolling.

The final word

Superfly 20 is the ideal entry point for young riders who want a bike they can ride on- or off-road. It's simple enough for beginners, but built with a quality frame and adjustable features that can grow with them. 

favorite_borderWhy you'll love it

  1. The frame of this bike is super light, so it's easy for young kids to maneuver which adds to overall ride confidence
  2. This is the perfect introduction to the trail, with MTB-ready parts that will have your kids' mastering the singletrack in no time
  3. Superfly 20's simple 1x6 twist shift is easy for kids to understand, so they won't get frustrated when learning how to switch gears
  4.  We love getting more kids out on the trail, and this entry-level bike will introduce young ones to a healthy hobby they'll love for years to come

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Features

Specifications

  • Frameset

    Frame
    20˝ Dialed frame size, Alpha Gold Aluminum
    Fork
    Dialed 20˝, alloy
  • Wheels

    Front hub
    Formula FM21 alloy
    Rear hub
    Formula FM31 alloy
    Rims
    20˝ 32-hole alloy
    Tires
    Bontrager XR1, 20x1.85˝
  • Drivetrain

    Shifters
    Shimano Tourney RS35, 6 speed twist
    Rear derailleur
    Shimano Tourney TY300
    Crank
    Alloy, 32T
    Bottom bracket
    Sealed cartridge
    Cassette
    SunRun freewheel, 14-28, 6 speed
    Chain
    KMC Z50
    Pedals
    Dialed 9/16˝, platform
  • Components

    Saddle
    Dialed 20˝ size, padded
    Seatpost
    Bontrager, 2-bolt head, 27.2mm, 8mm offset
    Handlebar
    Bontrager alloy, 31.8mm, 15mm rise
    Grips
    Dialed, Kraton
    Stem
    Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts
    Headset
    VP 1-1/8˝, semi-Integrated
    Brakeset
    Alloy linear-pull, Dialed alloy levers
  • Weight

    Weight
    8.16 kg / 17.99 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 80 pounds (36 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

All measurements provided in cm unless otherwise noted.

Wheel size Effective seat tube angle D Head angle E Effective top tube F Bottom bracket height H Chainstay length J Trail K Wheelbase L Standover M Frame reach N Frame stack
24" kids' 72.0° 70.0° 44.5 23.5 36.3 4.8 86.25 51.75 28.8 48.3

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