ALPHAZERO

Size Guide
Sizing

Prevelo Bike Sizing

Getting your kids the right size bike is important and, fortunately, also easy. You just need two pieces of information about your little rider:

  • Inseam
  • Rider Experience

Measuring Inseam

  1. Have the rider stand against a wall, hold a book between their legs so that it is firmly against their crotch (the same place their bicycle seat will be).
  2. Measure the distance from the floor to the top of the book.

Rider Experience

Children who are learning are more sensitive to bicycle height than children who already know how to ride a bike. For this reason, our recommendations for bicycle sizing vary slightly based on the experience lever of the rider. The chart below takes into account the fact that experienced riders tend to adapt better to a bike that is slightly larger. For this purpose we categorize young riders as either "Learners" or "Pedalers"

  • Learner: riders who either have not yet learned to ride a pedal bike, or are still frequently putting their feet on the ground while riding.
  • Pedaler: riders who can ride confidently and only put their feet down to stop.
Model Wheel
Size
Approx. Rider Age
(years)
Learner Inseam
(inches)
Pedaler Inseam
(inches)
Alpha Zero 12" 1½ + 12.5 to 16.5
Alpha One 14" 3 to 5 13.5 to 16.5 13 to 16.5
Alpha Two 16" 4 to 6 16.5 to 22
15 to 22 
Alpha Three 20" 5 to 9 20 to 23 17.5 to 23
Alpha Four 24" 7 to 11 24.5 to 28 23 to 28
Zulu Three 20" 5½ to 9 22 to 26 20 to 25
Zulu Four 24" 8 to 11 25 to 29 23 to 29
Color
Speed Silver
Power Purple

24
Speed Silver: In Stock
Power Purple: In Stock


Wheel Size
12 inches

Approx. Age Range
1½ + years

Speeds
Zero


Fast and Free Shipping

Shipping Terms

Checked and Tuned
Each bike is checked & tuned prior to shipment.

Easy Assembly
Includes all the tools you need & easy instructions.

  • The Alpha Zero balance bike is the perfect ride to help little ones learn balance before they jump on a pedal bike. It features:
    1. Lightweight 6061 aluminum frame with custom formed tubing.
    2. Lightweight aluminum alloy fork with chromoly steerer.
    3. Tektro rear v-brakes with small reach brake levers.
    4. Front and rear hubs with low profile rounded hex bolts and no harsh edged nuts for little legs to knock against.
    5. 99% assembled. Just install the handlebar.
  • Specifications

    MEASUREMENT SPECIFICATION
    Weight 8.5 lbs / 3.8 kg
    Minimum Saddle Height 11.5 in / 292 mm
    Maximum Saddle Height 14.6 in / 370 mm

    Geometry


    MEASUREMENT SPECIFICATION
    A Wheel Size 12"
    B Wheelbase 22.9 in / 581 mm
    C Effective Top Tube Length 11.6 in / 295 mm
    D Head Angle 67°
    E Seat Tube Angle 69°
    F Chain Stay Length 8.9 in / 225 mm
  • Components

    COMPONENT SPECIFICATION
    FRAME 6061 heat treated aluminum alloy custom formed tubing
    FORK Aluminum alloy blades with chromoly steerer tube -35mm rake
    SEAT CLAMP Aluminum alloy with toolless adjustment
    REAR BRAKE Tektro aluminum V-brake
    REAR BRAKE LEVER Tektro aluminum short reach
    HEAD SET 1 1/8" threadless
    RIM Aluminum with grinded sidewalls
    FRONT HUB Lightweight alloy 1-piece forged CNC with low profile rounded hex bolts
    REAR HUB Lightweight alloy 1-piece forged CNC with low profile rounded hex bolts
    TIRE & TUBE Kenda 12 x 1.75
    SADDLE Prevelo balance bike specific saddle
    HANDLEBAR Prevelo Aluminum - 375mm wide x 50mm rise - 22.2mm to 19mm taper
    HANDLEBAR STEM Aluminum 30mm extension
    GRIP Kraton rubber
  •  

    Custom Color Grips

    Customize your new Prevelo with grips in the rider's favorite color. Made for Prevelo out of 100% silicone by ESI in Southern California.  We will install the grips on your Alpha Zero before shipping.

    custom grip colorsprevelo bike custom grip color

     

    Rider Name Lettering

    • Custom cut out of 2.5 mil vinyl right here at Prevelo HQ in California and applied to BOTH sides of the bike before shipment.
    • With a bit of work the decal can be removed when it comes time to hand the bike down.

     


 

What the bicycle media is saying

two wheeling tots logo
Exceptional ★★★★★
The ultimate ride for young groms, the Prevelo Zero is superbly built from top to bottom and perfectly suited for adventure.
bike dads logo

Top Pick

Exceeds all expectations

bike and scoot logo

★★★★★

The Alpha Zero is a high-end balance bike for the picky parents who simply want the best bike for their kids.


 

Kid Centric Features


Ultra Low Standover Height

alpha zero rounded axle bolts

Rounded Axle Bolts

alpha zero internally routed cable

Internally Routed Cables


Real Hand Brake with Kid Size Lever

 

 

alpha zero custom formed tubing

Custom Formed 6061 Aluminum Construction

quick adjust seat height

Quick Adjust Seat Height


Built Kid Tough

alpha zero reverse mounted brake

Reverse Mounted Rear Brake

 

 

Alpha Zero Lifestyle

 

#alphazero

Customer Reviews

Based on 24 reviews
5 Star
88% 
21
4 Star
8% 
2
3 Star
4% 
1
2 Star
0% 
0
1 Star
0% 
0
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  • Reviews

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Your input is very much appreciated. Share it with your friends so they can enjoy it too!

RB
07/22/2018
Rochelle B.
United States

Exceptional--all around!

Hi Jacob & the Prevelo Bikes Team, Before I begin, I must apologize for not providing any feedback when we purchased our first Prevelo for our now 3.5-year-old. We LOVE your bikes. I can't recall how I stumbled upon your site, but I have to admit I am beyond grateful and thrilled. We bought the Prevelo One for our oldest daughter, Izzy. She turned three in December and she learned to ride in less than two months. Now, she is cruising and cutting corners like mad(wo)man. Our second daughter, Jacqui turned two on July 16. She watches Izzy with awe, thus we decided to get her a balance bike to get her going. No surprise, she loved it! Your bikes are made with such precision that the height, length, and reach is perfect for their tiny little bodies. We recently had our third child, a boy, this April. (If you are keeping score, yes, we have a 3.5-year-old, a two-year-old, and a 3-month-old.) So expect, the Beverage family to be valued customers for years to come. We appreciate all the thought and work you guys put in making your bikes. We absolutely love everything about them; the ease in putting it together, the craftsmanship, the quality and the sleek design. You guys totally nailed! Hope you all are having an awesome summer! All the best, the Beverage family (Steve, Rochelle, Izzy, Jacqui and Harrison)

JG
10/20/2017
Jenn G.
United States

Baby Emma loves her Prevelo

Best push bike out there! Nicely finished and really good looking. Our baby loves it!

M
07/06/2017
Mel

Amazing Company

We decided my son needed a bike on 4th of July. The owner welcomed us into his office to test one out, let my 20 month old ride around the back warehouse and answered all of our questions! The bike is amazing, super light and easy for my little guy to pick up and maneuver. Customer service is above expectation. I love that they're a local company to me, and so easily available and ready to help!

A
10/10/2018
Anonymous
United States

Excellent!!

Our son loves this bike! And the customer service at this company was really great, which is rare nowadays.

TP
10/09/2018
Tyler P.
United States

Quality bike and personalized service

Just unboxed our little guy's first bike. The team at Prevelo included a nice hand-written note. Great quality construction.

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