Alpha Zero

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 + 9.5 to 13.5
Alpha One 14" 2½ to 4½ 12.5 to 16 12.5 to 16
Alpha Two 16" 3½ to 6 16 to 18 with short seat post
(21.5 to 24 with long seat post)
15 to 17.5 with short seat post
(20.5 to 23.5 with long seat post)
Alpha Three 20" 5 to 9 18 to 23 17.5 to 22.5
Alpha Four 24" 7 to 11 24 to 29 23 to 28
Zulu Three 20" 5½ to 9 21 to 26 20 to 25
Zulu Four 24" 8 to 11 24 to 29 23 to 29

Wheel Size: 12 inches
Approx. Age Range: 1½ + years
In Stock - Ships Free and Fast!

12-Inch Wheels | Rear V-brake | No Pedals

  • 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.
  • 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

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

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

#alphazero

Subscribe