Precaliber 24 7-speed Boys' | Trek Bikes (INE)
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Precaliber 24 7-speed Boys'

Model 15766

Precaliber 24 7-speed Boy's is a classic kids' bike with great style, performance and durability. It has the simplicity of a 7-speed drivetrain and an intuitive twist shift that makes it easy for kids to ride on varied terrain. Plus, it's equipped with knobby trail-ready tyres and a lightweight aluminium frame that'll stand up to even the roughest riders. For kids ages 8-12, between 130-150 cm/51-59˝ tall.

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It's right for you if...

Your kid loves to explore, and you want them to have a quality ride for all their road, track or trail adventures. They're ready to upgrade from a single speed for a little extra help on hills and longer rides, but they don't need loads of gears just yet.

The tech you get

A strong, lightweight aluminium frame that will stand up to whatever your youngster dishes out, with simple and reliable Shimano 7-speed shifting that makes it easy to climb hills. Plus, it has parts designed specifically for kids, like a saddle, grips, pedals and a dialed adjustable crank that lets this bike keep up with growth spurts.

The final word

Whether your kids are riding to school, racing around the neighbourhood with friends or tagging along on family rides, Precaliber 24 7-speed features the quality parts they need to ride with confidence and stay in control. Plus, dialed components ensure that this is one bike they won't outgrow straight away.

favorite_borderWhy you'll love it

  1. We all know that kids grow up fast, and our adjustable Dialed Fit system allows this bike to grow with them
  2. This bike is hand-me-down heaven: it's built to last, so younger siblings can inherit this bike and it'll still feel like new
  3. You shouldn't buy your kid's bike where you buy your cereal – Unlike big box brands, Trek kids' bikes are assembled by people who know bikes
  4. Simple Shimano 7-speed shifting



  • Frameset

    24˝ Dialed frame size, Alpha Silver Aluminium
    Dialed 24˝, high-tensile steel
  • Wheels

    Front hub
    Rear hub
    24˝ 32-hole alloy
    Bontrager XR1, 24x1.85˝
  • Drivetrain

    Shimano Tourney, 7-speed twist
    Rear derailleur
    Shimano Tourney TY300
    Dialed adjustable length 127 mm - 152 mm, 32T
    Bottom bracket
    Loose Ball
    14-28, 7 speed, freewheel
    KMC Z50
    Dialled 9/16˝, platform
  • Components

    Dialed 24˝ size, padded
    Steel, 27.2 mm
    Dialed 20˝ size, 40 mm rise
    Dialled, Kraton
    Bontrager alloy, 25.4 mm, 15-degree
    Head set
    Adjustable ball bearing, threadless
    Brake set
    Alloy linear-pull, Dialed alloy levers
  • Weight

    11.03 kg / 24.32 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 77 kg (170 lb).
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 on Trek pre-production painted frames at the time of publication. Weights may vary in final production.

Sizing & fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.


Rider Height

All measurements provided in cm unless otherwise stated.

Wheel size A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack Saddle rail height min (w/short mast) Saddle rail height max (w/tall mast)
24" kids' 29.0 72.0° 10.5 70.0° 52.9 3.8 40.9 4.5 6.1 98.9 61.2 48.7 37.1 64 80.5

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