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  • The 20" Alpha Three is our 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. 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. Quick release front and rear wheels for toolless wheel removal.
    6. Three piece crank with squared taper 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. 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.
    9. 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.
    10. 95% assembled. Just install the handlebar, seatpost, front wheel and pedals.
  • Specifications

    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
  • Trying to decide between the Alpha Three and the Zulu Three? Click here to learn the difference:  Alpha Series vs. Zulu Series
  • Kickstand

    • Custom sized for the Prevelo Alpha Three
    • If you order a kickstand with a bike, it will come installed on the bike
    • Lightweight aluminium alloy
    • Non-corrosive, solid non-porous casting
    • Dual spring pressure plate and snap action mechanism with hardened steel pivot pin
    • Non-slip clamping surface
    • Made in USA

     

    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 the USA.  We will install the grips on your Alpha Three before shipping.

    custom grip colorsprevelo custom colored grips

     

    Rider Name Lettering

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

     

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