At a glance
- Use
- Streets, paths and light trails
- Wheel Size
- 20 in
- Age
- 5 to 9 years
- Type
- All-purpose Bike
- Weight
- 16.9 lbs(without pedals)
- Inseam
- 19" to 23"
The Prevelo Alpha Three is a 20-inch kids' bike and the first geared bike in the Alpha range, the step up from the single-speed Alpha Two. Built for confident riders ages 5 to 9, at 16.9 pounds it delivers refined, adult-quality performance: an 8-speed Microshift Acolyte drivetrain with chain retention and hydraulic disc brakes. A Two Wheeling Tots Top Pick, it handles pavement, paths, and light trails with real precision. Fits inseams 19 to 23 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, 110mm 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 | 20h Aluminum Sealed Cartridge with Quick Release Skewer |
| Rear Hub | 20h Aluminum Sealed Cartridge with Hex Key Skewer |
| Tires | Kenda Small Block Eight 20 x 1.5 60 TPI |
| Saddle | Prevelo 1pc Junior |
| Seat Post | ⌀31.6mm alloy 1 piece |
| Handlebar | HEIR Riser Lightweight Aluminum 31.8 clamp, 19mm grip 560mm wide, 25mm rise |
| Stem | Prevelo 1pc bar/stem with knee friendly design |
| Grips | 110mm Black Rubber 19mm diameter Lock-On |
| Pedals | Composite Big Kid, 9/16 LONG Crmo Spindle |
| Version | MK III |
Measurements
| Weight | 16.9 lbs |
|---|---|
| Recommended Inseam | 19" to 23" |
| Minimum Saddle Height | 21.2 in / 540mm |
| Maximum Saddle Height | 26.4 in / 670mm |
| Gain Ratio | 1.78 - 6.12 |
| Max Tire Width | 2.2 in |
Geometry
| Wheel Diameter | 20 in |
|---|---|
| Wheelbase | 33.62 in / 854 mm |
| Chain Stay Length | 13.8 in / 350 mm |
| Head Angle | 68° |
| Seat Tube Angle | 71.5° |
| Seat Tube Length | 11.22 in / 285 mm |
| Effective Top Tube | 17.87 in / 454 mm |
| Bottom Bracket Height | 8 in / 205 mm |
| Bottom Bracket Drop | 1.5 in / 38 mm |
| Stack | 16.18 in / 411 mm |
| Standover | 16.53 in / 420 mm |
| Q Factor | 146mm |
| Reach | 12.48 in / 317 mm |
Shipping Weights & Dimensions
| Box Dimensions | 46.0 in x 8.3 in x 25.5 in |
|---|---|
| Shipping Weight | 24.8 lb |
Specifications and components are subject to variations and change without notice.
Hill Conquering Gear Range
Promax Hydraulic Disc Brakes
Double Wall Tubeless-Ready Rims
Kid Centric Control Center and Integrated Handlebar
Rider Supply Pod Ready
Confidence Inspiring Geometry
Kid Friendly Shifting
Protected Flat Mount Rear Caliper








