Size Guide
98 reviews
Speed Silver
Power Purple
Braap Blue
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Wheel Size
24 inches
Approx. Age Range
7 to 11 years

Low Geo
Stable, agile, and easy to ride

$49 Shipping
in the Continental USA
Checked and Tuned
Each bike is checked & tuned prior to shipment.
Easy Assembly
Includes all the tools you need & easy instructions.
Kid Tough
Built tough, just like kids.
The 24" Alpha Four offers an NEW 9-speed Microshift drive train. The 11-36T wide range gearing is the real deal and gives growing riders truly usable gear range. It features:
  1. Prevelo confidence inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in control.
  2. Lightweight 6061 aluminum frame with custom formed tubing.
  3. Lightweight aluminum alloy fork with chromoly steerer.
  4. Tektro front and rear v-brakes.
  5. Lightweight Allen head front and rear wheel skewers for secure wheel installation.
  6. Three piece crank with squared taper bottom cartridge bearing bottom bracket and ultra narrow Q factor.
  7. Custom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimeter.
  8. NEW Microshift 9-speed drivetrain. Uses a shorter pulley cage without comprising gear ratio width. Because kids’ bikes have small wheel diameters, rear derailleurs on kids bikes hang low and close to the ground. The Prevelo Alpha bikes use smaller cage derailleurs to keep things high and away from the ground.
  9. Microshift Trigger Shifters. Small hands have a hard time using twist shifters. We use reliable silky smooth thumb shifters. They are easy for small hands to operate, and operate just like shifters on high performance bikes.
  10. Replaceable derailleur hanger. If the derailleur takes a hard hit, the hanger can be replaced without repair to the frame.
  11. 11-36T wide span gearing gives riders plenty of range to spin up tough hills.
  12. 95% assembled. Just install the handlebar, seatpost, front wheel and pedals.


What the bicycle media is saying

two wheeling tots

The perfect mix of road warrior and basic all-terrain cruiser, the Alpha Four is built with kid-specific geometry for a precise, comfortable fit.

The Prevelo Alpha series is an exceptional line of bikes for eager young riders. Lightweight with a low-center-of-gravity, the Alphas are fun and easy to ride.


Kid Centric Features

kids sized bicycle crank

Kid Engineered Crank

prevelo alpha four kids bike gears

9 Speed Microshift Drivetrain with Wide Span Gearing

prevelo internally routed cables

Internally Routed Cables

prevelo kid size brake and shift levers

Kid Size Hand Brakes and Easy to Use Microshift Thumb Shifters




Sealed Bearings

tool less bicycle seat post clamp

Quick Adjust Seat Height

Built Kid Tough

boy riding prevelo bicycle

Confidence Inspiring Geometry


boy with prevelo alpha four



Customer Reviews
4.9 Based on 98 Reviews
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Filter Reviews:
    United States United States
    The Absolute Best!

    Purchased for my 7 year old's birthday. Fit is perfect for her, relatively tall and fairly advanced rider for her age. We've been riding regularly over the last few months and have built up to a couple 10+ mile rides. Components are excellent and she is riding confidently over rolling hills and on occasional gravel. I highly recommend this bike!

    Paul T.
    United States United States
    Top Notch

    Bought this as a birthday present for my 8 year old daughter. She is thrilled with her first geared bike, and couldn't be happier. The bike build and components are very high quality and dealing with customer service was a pleasure.

    Heather S.
    United States United States

    At 7.5 yrs old our son decided he was open to learning how to ride a bike. After a lot of research, we wanted to buy a bike that was designed for kids, light weight, and could last for the next few yrs of growth. Couldn't be happier with the purchase, delivery, and design of his bike. Followed the "pedals off first" approach to learning and in one week he's confident and riding along side kids that learned at much younger ages. Thanks so much! Great product. Wish we had done the personalized name inscription.

    Prevelo Bikes Alpha Four Review
    United States United States
    Such great bikes for kids

    I made the decision to get the alpha 3 a few years ago and never regretted it. One son is now older, the younger one inherited the alpha 3, and I had no questions about getting the alpha 4. The build quality is great, with details such as the kid-centric geometry and internal cable routing. The blue color looks fabulous. I made very few adjustments as I assembled the bike. The alpha 3 required some tweaking, but this one was great. My son was very happy on his 8th birthday. Now both boys can chase their mama while she runs. We have recommended prevelo bikes to many of our friends. Thanks for another great bike.

    Prevelo Bikes Alpha Four ReviewPrevelo Bikes Alpha Four Review
    Jon M.
    United States United States
    Best kids bike

    These bikes are so much easier for kids to ride than the standard Walmart or even adult name brand kids versions. My two daughters, 5 & 7 went from riding 12” & 20” bikes to the prevelo 3 & 4 - 20” & 24” bikes within minutes. My 5 yr old had barely learned to ride without training wheels a week prior and was hitting trails within a few days of getting her prevelo. The kid focused geometry, lightweight frame, and hand brakes are so important in giving your kid the ability to ride to their potential. Adding the gears is a huge bonus for taking on hills and speed. So glad we’ve got these bikes, thank you prevelo