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Prevelo Alpha Four 24" Bike

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Braap Blue
Power Purple
Speed Silver

Product Details

Inspire confidence. Explore on or off road.  This bike is the real deal.

Fits:  Age 7 - 11 yrs (inseam 23" - 28")

Availability:   All colors are SOLD OUT.  

The 24" Alpha Four offers an 8-speed Shimano drive train. The 11-34T wide range gearing is the real deal and gives growing riders truly usable gear range.

The Prevelo Alpha Four Bicycle 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 bottom 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. Replaceable derailleur hanger. If the derailleur takes a hard hit, the hanger can be replaced without repair to the frame.
  11. 11-34T wide span gearing gives riders plenty of range to spin up tough hills.
  12. 95% assembled. Just install the handlebar, seatpost, front wheel and pedals. 

Add a Kickstand separately.


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 DERAILLEUR 8-speed Shimano Altus double servo with Smart cage
CRANK SET Prevelo anodized alloy 3-piece square taper with 130MM 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 24 ×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 60mm extension
GRIP Kraton rubber
PEDAL Composite with 9/16 chromoly axle



Prevelo Alpha Four Geometry

A Wheel Size 24"
B Wheelbase 38.1 in / 968 mm
C Effective Top Tube Length 19.6 in / 498 mm
D Head Angle 69.
E Seat Tube Angle 69°
F Chain Stay Length 16.3 in / 415 mm


Weights & Heights

Weight (including pedals) 21.2 lbs / 9.6 kg
Minimum Saddle Height 25.8 in / 655 mm
Maximum Saddle Height 31.2 in / 792 mm
Bottom Bracket Height 9.9 in / 252 mm


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