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Prevelo

Prevelo - Alpha Three

// The skinny

The 20" Alpha Three is Prevelos smallest geared bike. The 8-speed Shimano drive train and 11-34T wide range gearing is the real deal and gives growing riders truly usable gear range.

Color
Speed Silver
Power Purple
Braap Blue

Customer Reviews

Based on 1 review
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H
H.m.
Awesome bike for my small 5-year-old

My smaller 5-year-old (42.5” tall) loves his new bike. He’s been ready for gears for awhile but there doesn’t seem to be any 16” bikes out there with gears. I was hesitant at first because I thought a 20” bike would be too big for him but on this bike he’s able to reach the ground comfortably and shift gears easily with the thumb shifters. The bike does appear a little large for him but he’s a confident, aggressive biker and so happy to finally be able to go fast and pedal up steep hills.


// Features

  • Prevelo confidence-inspiring low and narrow geometry. Prevelo geometry keeps the rider low, balanced and in control.
  • Lightweight 6061 aluminum frame with custom formed tubing.
  • Lightweight aluminum alloy fork with chromoly steerer.
  • Tektro front and rear v-brakes.
  • Quick release front and rear wheels for toolless wheel removal.
  • Three piece crank with squared taper cartridge bearing bottom bracket and ultra narrow Q factor.
  • Custom made cranks. All Prevelo cranks are sized specifically for each model bike, down to the millimeter.
  • Shimano ALTUS 8-speed drivetrain. This 8-speed derailleur has a SHIMANO Smart cage. This unique pulley cage permits the use of 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 Smart cage derailleurs to keep things high and away from the ground.
  • Shimano ACERA RAPIDFIRE Plus Shift Lever. Small hands have a hard time using twist shifters. We use reliable silky smooth thumb shifters. They are easy for small hands to operate, have an indicator display, and operate just like shifters on high-performance bikes.
  • 95% assembled. Just install the handlebar, seatpost, front wheel and pedals.
  • // Specs

    MEASUREMENT
    SPECIFICATION
    Weight (including pedals)
    18.9 lbs / 8.6 kg
    Minimum Saddle Height
    20.7 in / 525 mm
    Maximum Saddle Height
    25.5 in / 648 mm
    Bottom Bracket Height
    8.1 in / 205 mm
    Gain Ratio
    2.2 - 6.7

    // Geometry


    MEASUREMENT SPECIFICATION
    A Wheel Size 20"
    B Wheelbase 32.9 in / 835 mm
    C Effective Top Tube Length 17.4 in / 443 mm
    D Head Angle 69°
    E Seat Tube Angle 71.5°
    F Chain Stay Length 13.8 in / 350 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
    FRONT BRAKE Tektro aluminum alloy V-brake
    REAR BRAKE Tektro aluminum alloy V-brake
    FRONT BRAKE LEVER Tektro aluminum alloy
    REAR BRAKE LEVER Tektro aluminum alloy
    REAR DERAILLEUR 8-speed Shimano Altus double servo with Smart cage
    SHIFTER REAR Shimano Acera RAPIDFIRE Plus
    FREEWHEEL/CASSETTE Shimano 11-34T
    CRANK SET Prevelo anodized alloy 3-piece square taper with 110MM crank length.
    SPROCKET 32T with double chain ring guard
    BB SET Sealed cartridge
    HEAD SET 1 1/8" threadless
    RIM Aluminum with grinded sidewalls
    FRONT HUB Lightweight alloy 1-piece forged CNC with quick release
    REAR HUB Lightweight alloy 1-piece forged CNC with quick release
    TIRE & TUBE Kenda Small Block Eight Pro 20 ×1.5
    SADDLE Prevelo big kid saddle
    HANDLEBAR Prevelo aluminum big bore - 580mm width x 40mm rise with 31.8mm to 22mm taper
    HANDLEBAR STEM Aluminum 35mm extension
    GRIP Kraton rubber
    PEDAL Composite with 9/16 chromoly axle

    Need help with size?

    We got this handy guide.

    Prevelo Size Guide

    Customer Reviews

    Based on 1 review
    100%
    (1)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    H
    H.m.
    Awesome bike for my small 5-year-old

    My smaller 5-year-old (42.5” tall) loves his new bike. He’s been ready for gears for awhile but there doesn’t seem to be any 16” bikes out there with gears. I was hesitant at first because I thought a 20” bike would be too big for him but on this bike he’s able to reach the ground comfortably and shift gears easily with the thumb shifters. The bike does appear a little large for him but he’s a confident, aggressive biker and so happy to finally be able to go fast and pedal up steep hills.

    Customer Reviews

    Based on 1 review
    100%
    (1)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    H
    H.m.
    Awesome bike for my small 5-year-old

    My smaller 5-year-old (42.5” tall) loves his new bike. He’s been ready for gears for awhile but there doesn’t seem to be any 16” bikes out there with gears. I was hesitant at first because I thought a 20” bike would be too big for him but on this bike he’s able to reach the ground comfortably and shift gears easily with the thumb shifters. The bike does appear a little large for him but he’s a confident, aggressive biker and so happy to finally be able to go fast and pedal up steep hills.

    PROOF IS IN THE MEDIA AND SMILES

    "We have put some serious miles on this little ripper of a bike and can honestly say from dirt trails in the bike park to neighborhood jaunts, this balance bike is a podium finish."
    - The Bike Dads

    "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."
    - Two Wheeling Tots

    "From the tiny saddle to the custom 85mm-long cranks, everything on the Alpha One has been thought-through with the dedication and passion I normally see reserved for bikes costing thousands more."
    - Red Kite Prayer

    Need help?

    We are here to help.

    Ask any questions you have and we will get back to you ASAP.

    We also have a size guide with plenty of information about sizing.