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2026 Prevelo

Alpha Four MkIII

A 24″ aluminum frame general youth bike with mid-range components and promax hydraulic disc brakes.
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Manufacturer Price

$799
Weight19.2 lbs  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels24″ Aluminum
Drivetrain1 × 8
GroupsetmicroSHIFT Acolyte
BrakesPromax Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

18 mph

Alpha Four MkIII

18 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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Price History
Reviews
Two Wheeling Tots
Prevelo Alpha Four and Five – 24 and 26 Inch Kids Bikes Review

Sep 2025 · Natalie Martins

The lightweight and confidence-inspiring the Prevelo Alpha Four and Five are sure to provide limitless fun for adventurous riders. Check out our review!

Read Review

road.cc
Prevelo Alpha Three 20-inch

Aug 2024 · Matt Page

Excellent specification with size-specific parts and geometry that make it a confident bike to ride for younger riders

Highs
  • Bespoke-sized components

  • Low standover

  • Wide gear range

Lows
  • Stiff wheel bearings

  • No bottle cage mount

  • Price

Read Review

Geometry
Specs
Build
Frame

Lightweight Triple Butted 6061 Aluminum. Low Center of Gravity, Kid Specific Geometry. Internally routed Cables. 3D Forged Dropouts. Dropper Post Compatible.

Tire Clearance2.2"

ColorsSpeed Silver; Braap Blue; Party Pink

Fork

Bladed Aluminum Legs with 1 1/8" Aluminum Steer tube

Bottom Bracket

68x113 Hollow Square Taper with Sealed Cartridge Bearings

Headset

1⅛" Integrated Threadless Sealed Cartridge

Stem

Lightweight Aluminum 31.8, 35mm Extension

Handlebar

HEIR Riser Lightweight Aluminum 31.8 clamp, 19mm grip 580mm wide, 25mm rise

Saddle

Prevelo 1pc Junior

Seatpost

⌀31.6mm alloy 1 piece

TypeRigid

Pedals

Composite Big Kid, 9/16 LONG Crmo Spindle

Grips

110mm Black Rubber 19mm diameter Lock-On

Groupset
Rear Derailleur

Microshift Acolyte Super Short with Springlock chain retention system

Crank

HEIR Lightweight Aluminum 3 piece. Narrow Width, 130mm length

Shifters

8 speed Microshift Acolyte Quick Trigger w/ Indicator

Cassette

8 speed 11-38t Microshift H083

Brakes

Promax Hydraulic Disc Brakes

TypePromax Hydraulic Disc

Wheels
Rims

Doublewall Aluminum, tubeless compatible

Front Hub

28h Aluminum Sealed Cartridge with Quick Release Skewer

Rear Hub

28h Aluminum Sealed Cartridge with Hex Key Skewer

Tires

Kenda Small Block Eight 24x1.95 Folding Bead 60 TPI

Rider Notes
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First added April 6

Last updated June 13