Zulu One
At a glance
- Use
- Trails and mountain biking
- Wheel Size
- 14 in
- Age
- 3 to 5 years
- Type
- Trail Bike
- Weight
- 13.5 lbs(without pedals)
- Inseam
- 14" to 17"
The Prevelo Zulu One is a 14-inch kids' mountain bike and the entry point to the Zulu trail range. Named to TIME's Best Inventions of 2025 and Bicycling Magazine's Best 14-Inch Bike of 2025, at 13.5 pounds it brings real trail capability to riders ages 3 to 5, with front and rear hydraulic disc brakes, slack and stable geometry, and the patent-pending BALANCE-TEC conversion system. Confidence-inspiring from the very first ride. Fits inseams 14 to 17 inches.
Components
| Frame | THRU-TUBE™ Lightweight 6061 Aluminum with Low Center of Gravity Trail Geometry. BALANCE-TEC Compatible. BALANCE-TEC kit sold separately. |
|---|---|
| Fork | Bladed Aluminum Legs with 1⅛" Aluminum Steer tube |
| Seat Clamp | Prevelo TallClamp with Toolless Adjustment |
| Brakes | Front and rear hydraulic disc brakes with Kid Sized Brake Levers |
| Freewheel / Cassette | 10t cassette - Freewheel |
| Crank | Lightweight Aluminum 3 piece. Narrow Width, 85mm length, 146mm Q factor |
| Chainring | 18t Aluminum |
| Bottom Bracket | 68x113 Hollow Spindle Square Taper with Sealed Cartridge Bearings |
| Headset | Integrated Sealed Cartridge Bearing |
| Rims | Aluminum |
| Front Hub | 9x100 20h Sealed Cartridge Bearing |
| Rear Hub | 110mm 20h Sealed Cartridge Bearing Cassette |
| Tires | Kenda Booster 14 × 2.2 |
| Saddle | HEIR Frame Hugger™ Little Kid - Alloy Reinforced |
| Seat Post | ⌀27.2mm alloy one-piece - Zulu One comes with two saddles and seat posts: tall and short |
| Handlebar | HEIR 19mm Riser Bar 31.6 clamp, 520mm wide, 25mm rise, 19mm grip diameter |
| Stem | Lightweight Aluminum 31.6, 35mm Extension |
| Grips | HEIR 110mm wide 19mm Lock-On |
| Pedals | Prevelo Composite Short Spindle, 9/16 Crmo Spindle |
| Version | MK II |
Measurements
| Weight | 13.5 lbs |
|---|---|
| Recommended Inseam | 14" to 17" |
| Minimum Saddle Height | 15.5 in / 395 mm |
| Maximum Saddle Height | 25.2 in / 640 mm |
| Gain Ratio | 3.765 |
| Max Tire Width | 2.2 in |
Geometry
| Wheel Diameter | 14 in |
|---|---|
| Wheelbase | 26.77 in / 680 mm |
| Chain Stay Length | 10.74 in / 273 mm |
| Head Angle | 66° |
| Seat Tube Angle | 76° |
| Seat Tube Length | 6.3 in / 160 mm |
| Effective Top Tube | 13.0 in / 351 mm |
| Bottom Bracket Height | 7.1 in / 182 mm |
| Bottom Bracket Drop | 0.59 in / 15 mm |
| Stack | 12.59 in / 320 mm |
| Standover | 14.2 in / 360 mm |
| Q Factor | 146mm |
| Reach | 9.21 in / 234 mm |
Shipping Weights & Dimensions
| Box Dimensions | 44.3 in x 7.0 in x 24.5 in |
|---|---|
| Shipping Weight | 21.8 lb |
Specifications and components are subject to variations and change without notice.
Balance-Tec™
Kid Optimized Cockpit
THRU-TUBE™ Frame
Precision Dropouts
Compact Drivetrain and Kid Size Cranks
Promax Hydraulic Disc Brakes
What the Press Says about the Zulu One
Exceptional - 5 Stars
9.7
Best Kids Gear for Summer Adventures
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.
