Alpha Two
At a glance
- Use
- Streets, paths and light trails
- Wheel Size
- 16 in
- Age
- 4 to 6 years
- Type
- All-purpose Bike
- Weight
- 12.1 lbs(without pedals)
- Inseam
- 15½" to 22"
The Prevelo Alpha Two is a 16-inch kids' pedal bike and the step up from the Alpha One, named Bicycling Magazine's Best 16-Inch Bike of 2025. At just 12.1 pounds it pairs youth-focused geometry with dual hand brakes and an efficient single-speed freewheel drivetrain (no coaster brake), so paved streets and gentle dirt paths feel easy and fun. Light, capable, and beautifully built. Fits inseams 15.5 to 22 inches.
Components
| Frame | THRU-TUBE™ Lightweight Triple Butted 6061 Aluminum. Low Center of Gravity, Kid Specific Geometry. Internally routed Cables. Adjustable Forged Dropouts. BALANCE-TEC Compatible. BALANCE-TEC kit sold separately. |
|---|---|
| Fork | Bladed Aluminum Legs with 1" Aluminum Steer tube |
| Seat Clamp | Prevelo TallClamp with Toolless Adjustment |
| Brakes | Independently operated dual hand brakes with Kid Sized Brake Levers |
| Freewheel / Cassette | 10t cassette - Freewheel |
| Crank | HEIR Lightweight Aluminum 3 piece. Narrow Width, 95mm length, 146mm Q factor |
| Chainring | 18t |
| Bottom Bracket | 68x113 Hollow Square Taper with Sealed Cartridge Bearings |
| Headset | 1" Integrated Threadless Sealed Cartridge |
| Rims | Lightweight Aluminum with Shaved Sidewalls |
| Front Hub | 74mm 16h Aluminum Sealed Cartridge with Allen Key Bolts |
| Rear Hub | 110mm 16h Aluminum Sealed Cartridge Cassette with hex key bolts |
| Tires | Kenda Small Block Eight 16 x 1.5 |
| Saddle | HEIR Frame Hugger™ Little Kid - Alloy Reinforced |
| Seat Post | ⌀27.2mm alloy 1 piece |
| Handlebar | Lightweight Aluminum 1 piece Bar/Stem Combo, 460mm wide, 50mm rise, 19mm grip diameter |
| Stem | Prevelo 1pc bar/stem with knee friendly design |
| Grips | 90mm Black Rubber, 19mm Small Hand |
| Pedals | Composite Little Kid, 9/16 SHORT Crmo Spindle |
| Version | MK III |
Measurements
| Weight | 12.1 lbs |
|---|---|
| Recommended Inseam | 15½" to 22" |
| Minimum Saddle Height | 16.9 in / 430 mm |
| Maximum Saddle Height | 25.2 in / 640 mm |
| Gain Ratio | 3.8 |
| Max Tire Width | 2.2 in |
Geometry
| Wheel Diameter | 16 in |
|---|---|
| Wheelbase | 28.8 in / 730 mm |
| Chain Stay Length | 12.2 in / 310 mm |
| Head Angle | 69° |
| Effective Top Tube | 15.75 in / 400 mm |
| Bottom Bracket Height | 6.95 in / 177 mm |
| Bottom Bracket Drop | 0.75 in / 19 mm |
| Stack | 14.3 in / 363 mm |
| Standover | 14.1 in / 360 mm |
| Q Factor | 146mm |
| Reach | 10.51 in / 267 mm |
Shipping Weights & Dimensions
| Box Dimensions | 44.5 in x 6.5 in x 25.0 in |
|---|---|
| Shipping Weight | 19.6 lb |
Specifications and components are subject to variations and change without notice.
Rider Supply Pod Ready
High Performance Kid Optimized Drivetrain
Precision Dropouts
Integrated Handlebar and Stem
THRU-TUBE™ Frame
Balance-Tec™
What the Press Says about the Alpha Two
Best 16" Bike
9.8
Gold Award Recipient
Common questions
Do Prevelo bikes have hand brakes or coaster brakes?
All Prevelo bikes are equipped with hand brakes to ensure effective stopping power. Below is a breakdown of the braking systems for each model:
Model-Specific Braking Systems
Alpha Zero: Rear hand brake only.
All Other Models: Front and rear hand brakes.
How much assembly is required?
Prevelo bikes come almost fully assembled. Here are the complete assembly requirements for each bike:
| Bike | Assembly steps |
|---|---|
| Alpha Zero | (1) attach handlebar to steerer tube, (2) adjust seat height |
| Alpha One and Alpha Two | (1) attach handlebar to steerer tube, (2) attach pedals, (3) adjust seat height |
| Zulu One | (1) attach handlebar to stem, (2) attach pedals, (3) adjust seat height |
| Alpha Three | (1) attach handlebar to steerer tube, (2) attach front wheel, (3) attach pedals, (4) adjust seat height |
| Zulu Two, Alpha Four, Alpha Five, Zulu Three, Zulu Four, Zulu Five | (1) attach handlebar to stem, (2) attach front wheel, (3) attach pedals, (4) adjust seat height |
You can view assembly instructions for all bikes here: Assembly Instructions
How quickly do bikes ship?
Each bike's product page shows its expected ship date. In-stock bikes ship promptly from our warehouse, and if a bike is on pre-order, the product page shows the pre-order ship date as well. At checkout you can choose flat-rate ground shipping or expedited 2-day or 1-day express delivery (for Contiguous US).
Full details: Shipping Terms.
Which size bike fits my rider?
Sizing is based primarily on your child's inseam (inner-leg measurement), which is more reliable than age. When a rider falls between two sizes, the smaller wheel is easier to handle and the larger gives more room to grow.
Recommended inseam ranges differ by model, and we keep them current per bike, so use the Bike Chooser for an exact, up-to-date recommendation matched to your child's inseam.
See the Bike Chooser.
What is Prevelo Bikes' return policy?
All Prevelo bikes come with a 30 day Money Back Guarantee. Try it out the bike on a dry surface and if for any reason you don't love it, you can return it to us within 30 days.
Just make sure to hold onto the original packaging until you know it's right.
To learn more about the 30 Day Money Back Guarantee or to return an item, go here: Returns
What is Prevelo Bikes' Warranty?
Every Prevelo comes with the Prevelo Bikes Five Year Limited Warranty. The frame and rigid fork are warranted against defects in material or workmanship for five years from the original date of purchase, to the original owner. Paint finish and all other original components are warranted for one year. Normal wear, and damage from crashes, misuse, neglect, or improper assembly, are not covered.
See the full terms: Prevelo Bikes Five Year Limited Warranty.
