ADULT BIKES

Pre-Order Dates

We do not open pre-orders for a shipment until we have a good amount of confidence in the ship date.  That being said, the estimated delivery dates listed on our website are based on the best information that we have at the moment.  While we cannot control every variable, we pledge to be honest and transparent about lead times.

- The ship dates that are on the website represent our honest estimate of the date that the bikes will ship on.

- Where information is imprecise (for example, referencing a month or quarter), it is because there are unpredictable factors that make it so we cannot credibly be more precise.

- We will work tirelessly to keep the bikes on schedule. It's part of our company culture to be very involved in our supply chain and to be proactive about addressing issues that could turn into delays.

- If something happens that changes the ship date we will communicate quickly and clearly about the delay.

- You can cancel your pre-order any time before your bike ships.


Pre-date changes

Your pre-order date will be included in your order confirmation. If we learn something that changes that date, we will contact you. You might see the pre-order date change on the website. There are a variety of things that could cause a change in the pre-order date including shipping delays, back logs, or moving through different batches. Just because the date on the website changes, does not mean that the date of a pre-order already placed has changed.  Again, if you place a pre-order and the estimated delivery date changes, we will inform you.


Pre-order payment policy

Your credit card will be charged immediately when you place your pre-order.  Your pre-order is cancelable and fully refundable. If you need to cancel a pre-order contact us and we'll take care of it!

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  • Bike Rumor Editor's Choice

Zulu Four MkII

58 reviews
$1,399.00
Color: Speed Silver
Size
Guide Assembly
Options Assembly
Instructions

At a glance

Use
Trails and mountain biking
Wheel Size
24 in
Age
8 to 11 years
Type
Trail Bike
Weight
22 lbs(without pedals)
Inseam
23" to 29"

The Prevelo Zulu Four is a 24-inch kids' mountain bike and the step up from the 20-inch Zulu Three, and a Bike Rumor Editor's Choice. Tuned for riders ages 8 to 11 at just 22 pounds, it climbs and descends with real precision thanks to a 100mm RST First air fork with lockout and adjustable rebound, thru-axle, hydraulic disc brakes, and a wide-range 10-speed Microshift Advent X drivetrain. High-performance components engineered around a young rider's proportions. Fits inseams 23 to 29 inches.

The Most Advanced 24" Mountain Bike

Packed with mega smart features

Prevelo Bikes-Zulu Four-Speed Silver
Components
FrameLightweight Triple-butted 6061 Aluminum, UDH Compatible Thru-Axle Dropout, with Internal Cable Routing and Low Center of Gravity Trail Geometry
ForkRST First 24 AIR - 100mm travel - lockout and adjustable rebound / Thru-Axle
Seat ClampAluminum with Toolless Adjustment
BrakesTektro J285 Hydraulic Disc
DerailleurMicroshift Advent X AM V2
Shifter10 speed Microshift Advent X Pro
Freewheel / Cassette10 speed 11-48t Advent X G-Series
Crank130mm HEIR Direct Mount 2-piece with Alloy Spindle
Chainring28t 6mm Offset Narrow-Wide CNC Aluminum
Bottom BracketExternal BSA 73mm
Headset1⅛" Integrated Sealed Cartridge Threadless
RimsHEIR i27 Asymmetrical Tubeless Ready Pre-Taped
Front Hub15x100 28h Sealed Cartridge / Thru-Axle
Rear Hub12x142 28h Sealed Cartridge w/ quick engaging 6 pawl freehub / 180 points of engagement / Thru-Axle
TiresKenda Booster Pro 24 x 2.2 Tubeless Ready
SaddleHEIR Pivotal
Seat Post⌀31.6mm alloy Pivotal
HandlebarHEIR Lightweight Aluminum 31.8, 620mm wide, 19mm Grip Diameter
StemLightweight Aluminum 31.8, 35mm Extension
GripsHEIR 110mm wide 19mm Lock-On
PedalsComposite Big Kid, 9/16 Crmo Spindle
VersionMK II
Measurements
Weight22 lbs
Recommended Inseam23" to 29"
Minimum Saddle Height24.8 in / 630 mm
Maximum Saddle Height31.1 in / 790 mm
Gain Ratio1.39 - 6.09
Max Tire Width2.4 in
Geometry
Wheel Diameter24 in
Wheelbase38.9 in / 989 mm
Chain Stay Length15 in / 380 mm
Head Angle66°
Seat Tube Angle74°
Seat Tube Length12.2 in / 310 mm
Effective Top Tube19.7 in / 500 mm
Bottom Bracket Height10.2 in / 260 mm
Bottom Bracket Drop1.8 in / 45 mm
Stack21.3 in / 541 mm
Standover22.8 in / 580 mm
Q Factor170mm
Reach13.5 in / 344 mm
Shipping Weights & Dimensions
Box Dimensions52 in x 9 in x 27.5 in
Shipping Weight33 lb

Specifications and components are subject to variations and change without notice.

Lightweight Wide Range Drivetrain

Microshift's Advent X AM Clutch Rear Derailleur paired with their ultra-light 10-speed G-Series 11-48T cassette, and easy-to-use trigger shifters gives progressing riders plenty of gear range to tackle a variety of trails. UDH compatible frame works with a wide range of current and future drivetrains.

Kid Optimized Crank

Prevelo crank lengths are custom sized for each size bike to make sure little riders have optimum pedal ergonomics. And they have ultra-narrow Q-factors to match the narrow hips of young cyclists. If that sounds like technical mumbo jumbo, here's the point - Prevelo cranks will help make small riders more comfortable and efficient on their bike.

Confidence Inspiring Trail Geometry

The Zulu Four features Prevelo's signature confidence inspiring geometry. Prevelo geometry utilizes a low bottom bracket that lowers the center of gravity of the bike and rider, making for a more agile and confident ride. The slack front end makes the bike forgiving to young trail riders experimenting with tough terrain.

prevelo zulu pivotal saddle

Pivotal Saddle

The Pivotal system lowers the stack height of the seat, resulting in a 30mm lower seat. This helps get small riders on big wheels. This system also helps reduce weight and increase durability.

heir tubeless wheels

Lightweight Tubeless Ready Heir Wheels

Wrapped with Kenda Booster Pro tires, the HEIR wheels can be easily set up tubeless so you can reduce flats, improve traction, and shave another ~300 grams of weight. The sealed cartridge thru-axle hubs make these wheels some of the fastest and most reliable wheels found on any bike. The quick-engagement rear hub sounds awesome and helps riders navigate tricky terrain.

Ergonomic Control Center

The HEIR 19mm handlebar is designed for small hands to get a firm grip around the bar. Paired with thin lock-on grips, kid-tuned shifters, and short reach brake levers, this cockpit is 100% designed for little shredders.

zulu five kids mountain bike

The next level.

What the Press Says about the Zulu Four

Best Kids Mountain Bike Upgrade

I have an extremely petite 10-year-old, and I am shocked by how hard she's charging on this thing.

Wired

2022 Editors Choice

My son was empowered riding the ZULU, and now he could climb the steep trails at our local single track and mountain bike for real. Our rides have gotten longer and more adventurous, and ZULU has taken all the slams with grace and little scuffs. I highly recommend the Prevelo ZULU for anyone looking for a kids bike that will foster a love of mountain biking and be solid to pass down for many kids’ uses

Bike Rumor

This bike is an absolute hard charging 24 inch hardtail!

The Bike Dads

Exceptional - 5 Stars

From bombing down more advanced single-track to getting playful at your local bike park, the Prevelo Zulu Four is the perfect noble steed for your little grom. With confidence-building geometry, the Zulu will quickly progress your young rider from hesitating on obstacles to charging through them. For those young riders who are all about the downhill, yet need a low granny gear to help power up the uphills, the Zulu is the perfect 24″ mountain bike for the job.

Two Wheeling Tots

Prevelo makes my favorite bikes for kids and small riders. The quality of these bikes and their components is higher than many of the adult bikes I receive for review on the channel.

Hardtail Party

The Zulu is one of the most confidence inspiring hardtail trail bikes for kids out there.

Haven Outdoors

Best Kids Gear for Summer Adventures

This fully-featured mountain bike has all of the pieces to make the intimidating (for kids and parents) transition from kiddo cyclist to kiddo mountain biker.

Outside

Our experience with the Prevelo Zulu Four has been amazing.

If you are after an extremely high quality, lightweight and no nonsense kids bike developed in the US, I would look no further than Prevelo.

NSMB

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Common questions

How can I teach my child how to shift?

Reach our article on Teaching Children to Shift Gears

How do I adjust my derailleur?

See our derailleur adjustment video here: Derailleur Adjustment

How much assembly is required?

Prevelo bikes come almost fully assembled. Here are the complete assembly requirements for each bike:


BikeAssembly 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.

More in our Knowledge Base
Prevelo Bikes-Zulu Four-Speed Silver

Zulu Four

$1,399.00

The Prevelo Zulu Four is a 24-inch kids' mountain bike and the step up from the 20-inch Zulu Three, and a Bike Rumor Editor's Choice. Tuned for riders ages 8 to 11 at just 22 pounds, it climbs and descends with real precision thanks to a 100mm RST First air fork with lockout and adjustable rebound, thru-axle, hydraulic disc brakes, and a wide-range 10-speed Microshift Advent X drivetrain. High-performance components engineered around a young rider's proportions. Fits inseams 23 to 29 inches.

Color

  • Speed Silver
  • Bodacious Blue
  • Pedal to the Metal Pink

Wheel Size

24 in

Type

Trail Bike

Use

Dirt path, single-track

Speeds

10

Weight

22 lbs

Min Saddle Height

24.8 in / 630 mm

Max Saddle Height

31.1 in / 790 mm

Wheelbase

38.9 in / 989 mm

Tires

Kenda Booster Pro 24 x 2.2 Tubeless Ready

Saddle

HEIR Pivotal

Derailleur

Microshift Advent X AM V2

Cassette

10 speed 11-48t Advent X G-Series

Crank

130mm HEIR Direct Mount 2-piece with Alloy Spindle

Brakes

Tektro J285 Hydraulic Disc
View product