Prevelo Alpha Three – 20″ Kids Bike

The 20″ Alpha Three is Prevelo’s smallest geared bike. The NEW 9-speed Microshift drivetrain and 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. 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 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. 95% assembled. Just install the handlebar, seatpost, front wheel and pedals.
    

    Weight (including pedals)	19.1 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	2.0 – 6.7
    Standover (ground to top of top tube)	17.5 in / 444.5mm

    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	Aluminum alloy V-brake
    REAR BRAKE	Aluminum alloy V-brake
    FRONT BRAKE LEVER	Aluminum alloy
    REAR BRAKE LEVER	Aluminum alloy
    REAR DERAILLEUR	9-speed Microshift
    SHIFTER REAR	Microshift Thumb Shifter
    FREEWHEEL/CASSETTE	11-36T
    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
    REAR HUB	Lightweight alloy 1-piece forged CNC
    TIRE & TUBE	Kenda Small Block Eight Pro 20 ×1.5
    SADDLE	Prevelo big kid saddle
    HANDLEBAR	Prevelo aluminum big bore – 560mm width x 40mm rise with 31.8mm to 22mm taper
    HANDLEBAR STEM	Forged aluminum
    GRIP	Kraton rubber
    PEDAL	Composite with 9/16 chromoly axle