At a glance
- Use
- Streets, paths and light trails
- Wheel Size
- 24 in
- Age
- 7 to 11 years
- Type
- All-purpose Bike
- Weight
- 19.2 lbs(without pedals)
- Inseam
- 23" to 28"
The Prevelo Alpha Four is a 24-inch kids' bike and the step up from the 20-inch Alpha Three, crafted for confident riders ages 7 to 11. At 19.2 pounds it blends trail-ready capability with youth-friendly ergonomics: an 8-speed Microshift Acolyte geared drivetrain with chain retention and hydraulic disc brakes. A Two Wheeling Tots Top Pick, it's equally at home on pavement, bike paths, and light singletrack. Fits inseams 23 to 28 inches.
Components
| Frame | Lightweight Triple Butted 6061 Aluminum. Low Center of Gravity, Kid Specific Geometry. Internally routed Cables. 3D Forged Dropouts. Dropper Post Compatible. |
|---|---|
| Fork | Bladed Aluminum Legs with 1 1/8" Aluminum Steer tube |
| Seat Clamp | Aluminum Quick Release |
| Brakes | Promax Hydraulic Disc Brakes |
| Derailleur | Microshift Acolyte Super Short with Springlock chain retention system |
| Shifter | 8 speed Microshift Acolyte Quick Trigger w/ Indicator |
| Freewheel / Cassette | 8 speed 11-38t Microshift H083 |
| Crank | HEIR Lightweight Aluminum 3 piece. Narrow Width, 130mm length |
| Chainring | 28T Narrow Wide with aluminum chain ring guard |
| Bottom Bracket | 68x113 Hollow Square Taper with Sealed Cartridge Bearings |
| Headset | 1⅛" Integrated Threadless Sealed Cartridge |
| 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 |
| Saddle | Prevelo 1pc Junior |
| Seat Post | ⌀31.6mm alloy 1 piece |
| Handlebar | HEIR Riser Lightweight Aluminum 31.8 clamp, 19mm grip 580mm wide, 25mm rise |
| Stem | Lightweight Aluminum 31.8, 35mm Extension |
| Grips | 110mm Black Rubber 19mm diameter Lock-On |
| Pedals | Composite Big Kid, 9/16 LONG Crmo Spindle |
| Version | MK III |
Measurements
| Weight | 19.2 lbs |
|---|---|
| Recommended Inseam | 23" to 28" |
| Minimum Saddle Height | 26.1 in / 665mm |
| Maximum Saddle Height | 31.5 in / 800mm |
| Gain Ratio | 1.79 - 6.18 |
| Max Tire Width | 2.2 in |
Geometry
| Wheel Diameter | 24 in |
|---|---|
| Wheelbase | 38.38 in / 975 mm |
| Chain Stay Length | 15.94in / 405 mm |
| Head Angle | 68° |
| Seat Tube Angle | 73° |
| Seat Tube Length | 12.59 in / 320 mm |
| Effective Top Tube | 19.88 in / 505 mm |
| Bottom Bracket Height | 9.9 in / 252 mm |
| Bottom Bracket Drop | 1.7 in / 43 mm |
| Stack | 18.7 in / 475 mm |
| Standover | 20.07 in / 510 mm |
| Q Factor | 146mm |
| Reach | 14.13 in / 359 mm |
Shipping Weights & Dimensions
| Box Dimensions | 51.0 in x 8.3 in x 26.9 in |
|---|---|
| Shipping Weight | 27.8 lb |
Specifications and components are subject to variations and change without notice.
Promax Hydraulic Disc Brakes
Hill Conquering Gear Range
Tubeless Capable Double Wall Rims
Confidence Inspiring Geometry
Protected Flat Mount Rear Caliper
Kid Sized Control Center
Kid Friendly Shifting
Rider Supply Pod Ready








