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!

1 13

Zulu Two MKII

124 reviews
In Stock
Ships Tomorrow, April 18.
Order in the next 8h 16m 36s
$649.00
Generation
MKII
MKI
Version
Color: Speed Silver
Quick Shipping
$39 shipping in Continental USA
Easy Returns
30 Day Guarantee
Easy Assembly
Prepped and Tuned before Shipment
Price Protection
30 Day Price Protection
5 Year
Limited Warranty
Fanatical Support
from Real Bike Mechanics
Size
Guide Assembly
Options
Equipped with
Balance Tec
Thru Tube

Use

Dirt path, single-track

Wheel Size

16 in

Age

~ 4 to 6 years

Type

Mountain Bike

Weight

15.1 to 15.8 lbs

(without pedals)

Inseam

16" to 22"

The new Zulu Two builds on its legacy of innovation with significant weight reductions and groundbreaking BALANCE-TEC™ conversion system. The patent-pending BALANCE-TEC system is the first-ever balance-bike-to-pedal-bike conversion that doesn't compromise pedaling performance.


The Zulu Two also features:

  • A new smaller rear cog combined with a smaller chainring reduces weight while maintaining climbing-friendly gear ratios
  • Adjustable rear dropouts enable precise chain tension and wheelbase tuning
  • THRU-TUBE seat tube design increases fit range to accommodate growing riders
  • Sealed cartridge bearings throughout for superior durability
  • High-volume Kenda Booster tires for improved traction and ride comfort
  • Hydraulic disc brakes deliver category-leading control and safety

Weight
Weight
Without pedals
15.1 to 15.8 lbs
Minimum Saddle Height
Minimum Saddle Height
Distance from ground to top of saddle when saddle is in lowest position. This is different than inseam, which is the recommendation for rider inseam.
17.7 in / 450 mm
Maximum Saddle Height
Maximum Saddle Height
Distance from ground to top of saddle when saddle is in highest position. This is different than inseam, which is the recommendation for rider inseam.
25.2 in / 640 mm
Gain Ratio
Gain Ratio
Gain Ratio is the ratio of distance of pedal travel to distance of bike travel. For those who like math:
Gain Ratio = (Radius of Rear Wheel ÷ Crank Length) x (Number of Teeth in Chain Ring ÷ Number of Teeth in Rear Cog)
3.85
Recommended Inseam
Recommended Inseam
Recommended rider inseam for best fit. Click here for more information on rider fit and measuring inseam.
16" to 22"
Wheel Diameter
16 in
Wheelbase
Wheelbase
The horizontal distance between the center of the front hub and the center of the rear hub
30.15 in / 766 mm
Chain Stay Length
Chain Stay Length
The horizontal distance between the vertical plane that intersects with the rear hub and the vertical plane that intersects with the center of the bottom bracket
11.69 in / 297 mm
Seat Tube Angle
76°
Head Angle
66°
Effective Top Tube Length
Effective Top Tube Length
Horizontal distance between the head tube and the seat tube when the saddle height is set to be level with the top of the head tube.
15.75 in / 400 mm
Bottom Bracket Height
Bottom Bracket Height
The vertical distance between the center of the bottom bracket and the ground
7.3 in / 185 mm
Stack
Stack
Vertical distance between the center of the bottom bracket and the top of the head tube
15.07 in / 383 mm
Bottom Bracket Drop
Bottom Bracket Drop
Vertical distance between the center of the rear axle and the center of the bottom bracket
0.75 in / 19 mm
Seat Tube Length
7.9 in / 200 mm
Standover
Standover
Vertical distance between the ground and the top of the top tube infront of the saddle.
15.6 in / 395 mm
Q factor
Q factor
The horizontal distance between the outsides of the crank arms, measured parallel to the bottom bracket.
146mm
Reach
Reach
The horizontal distance between the center of the bottom bracket and the center of the top of the head tube.
10.39 in / 264 mm
Shipping Weights and Dimensions
Box Dimensions
47.0 in x 7.0 in x 27.0 in
Shipping Weight
26 lb

Frame
THRU-TUBE™ Lightweight 6061 Aluminum with Internal Cable Routing and Low Center of Gravity Trail Geometry
Fork
Standard: Bladed Aluminum Legs with 1⅛" Aluminum Steer Tube and Disc Brake Mounts HEIR: HEIR®16 60mm travel - HM Carbon Fiber / AL6061 Lower - AL7050 Hard Anodized ⌀30mm Stanchion - adjustable rebound, lockout and compression
Seat Clamp
Prevelo TallClamp with Toolless Adjustment
Brakes
Promax DSK 940 Hydraulic Disc
Freewheel / Cassette
10t 1pc driver
Crank
Lightweight Aluminum 3 piece. Narrow Width, 95mm length, 146mm Q factor
Chainring
18t Aluminum
Bottom Bracket
68x113 Hollow Spindle Square Taper with Sealed Cartridge Bearings
Headset
Integrated Sealed Cartridge Bearing
Rims
Double Wall Aluminum
Front Hub
20h 9x100 Sealed Cartridge Bearing
Rear Hub
20h 110mm Sealed Cartridge Bearing Cassette
Tires
Kenda Booster 16 × 2.2
Saddle
Saddle
aka "seat"
HEIR Frame Hugger™ Little Kid - Alloy Reinforced
Seat Post
⌀27.2mm alloy 1 piece
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

The Short Version


The Zulu Two MKII is the latest version with the newest upgrades. The Zulu Two MKI is a previous generation. The Zulu Two MKII is lighter, and has the BALANCE-TEC conversion system, THRU-TUBE frame and new compact drivetrain. 

Geometry and Specifications Comparison

Feature Zulu Two MKI Zulu Two MKII Difference
Weight 17.15 to 17.95 lbs 15.1 to 15.8 lbs ↓ 2.05-2.15 lbs lighter
Minimum Saddle Height 18.1 in / 460 mm 17.7 in / 450 mm ↓ 0.4 in / 10 mm lower
Maximum Saddle Height 25.2 in / 640 mm 25.2 in / 640 mm No change
Gain Ratio 3.8 3.85 ↑ 0.05 higher
Wheelbase 30.5 in / 775 mm 30.15 in / 766 mm ↓ 0.35 in / 9 mm shorter
Chain Stay Length 12 in / 305 mm 11.69 in / 297 mm ↓ 0.31 in / 8 mm shorter
Seat Tube Angle 74° 76° ↑ 2° steeper
Head Angle 66° 66° No change
Effective Top Tube Length 15.3 in / 389 mm 15.75 in / 400 mm ↑ 0.45 in / 11 mm longer
Bottom Bracket Height 7.3 in / 185 mm 6.9 in / 177 mm  ↓ .4 in / 8mm lower
Stack 14.0 in / 356 mm 15.07 in / 383 mm ↑ 1.07 in / 27 mm higher
Bottom Bracket Drop 0.4 in / 11 mm 0.75 in / 19 mm ↑ 0.35 in / 8 mm more drop
Seat Tube Length 7.9 in / 200 mm  10 in / 255 mm ↑ 2.1 in / 55 mm longer
Standover 15.6 in / 395 mm 15.6 in / 395 mm No change
Q factor 138 mm 146 mm ↑ 8 mm wider
Reach 10.39 in / 264 mm 10.39 in / 264 mm No change

Color Options

Model Available Colors
Zulu Two MKI Bodacious Blue, Speed Silver
Zulu Two MKII Bodacious Blue, Speed Silver, Pedal to the Metal Pink

Change: MKII adds "Pedal to the Metal Pink" as a new color option

Component Differences

Component Zulu Two MKI Zulu Two MKII Change
Frame 6061 Aluminum with Internal Cable Routing THRU-TUBE™ Lightweight 6061 Aluminum with Internal Cable Routing New THRU-TUBE™ design
Seat Clamp Aluminum with Toolless Adjustment Prevelo TallClamp with Toolless Adjustment Upgraded to TallClamp
Brakes Tektro M281 Hydraulic Disc Promax DSK 940 Hydraulic Disc Brand change
Chainring 25t Aluminum with Double Aluminum Guards 18t Aluminum Smaller chainring, upgraded compact and lightweight design
Freewheel / Cassette 14t M30 threaded 10t 1pc driver Smaller rear cog, upgraded design
Bottom Bracket 68x113 Square Taper with Sealed Cartridge Bearings 68x113 Hollow Spindle Square Taper with Sealed Cartridge Bearings Upgraded to hollow spindle
Headset 1⅛" Internal Threadless Integrated Sealed Cartridge Bearing Upgraded design
Front Hub 16h Forged CNC Bolt On 20h 9x100 Sealed Cartridge Bearing ↑ More spokes, sealed bearings
Rear Hub 16h Forged CNC Freewheel 20h 110mm Sealed Cartridge Bearing Cassette ↑ More spokes, cassette design
Tires Innova MTB 16 × 2.1 Kenda Booster 16 × 2.2 Brand change, slightly wider
Saddle Prevelo Little Kid HEIR Frame Hugger™ Little Kid - Alloy Reinforced Upgraded design, lighter weight, lower stack
Seat Post ⌀27.2mm alloy 2-bolt ⌀27.2mm alloy 1 piece Simpler design, lighter weight, lower stack
Handlebar Lightweight Aluminum 25.4, 520mm wide, 35mm rise HEIR 19mm Riser Bar 31.6 clamp, 520mm wide, 25mm rise New HEIR design, reduced rise
Stem Lightweight Aluminum 25.4, 30mm Extension Lightweight Aluminum 31.6, 35mm Extension ↑ Wider clamp, longer extension
Grips 90mm Black Rubber, 19mm Diameter HEIR 110mm wide 19mm Lock-On ↑ Wider, HEIR lock-on design

Key Feature Changes

Major MK II Innovations

THRU-TUBE™ Frame Design:

  • Keeps riders lower to the ground for improved confidence
  • Enables the lower minimum saddle height (17.7" vs 18.1")
  • Improves pedaling ergonomics while maintaining safety

BALANCE-TEC™ System:

  • First-ever balance-bike-to-pedal-bike conversion that maintains pedaling performance
  • Features self-extracting crank and bottom bracket shields that double as footrests
  • Integrated chainstay key allows chain removal without breaking the chain
  • Enables conversion between pedal and balance modes in minutes without special tools

Precision Adjustable Dropouts:

  • Provides precise chain tension control
  • Makes tire changes easier by maintaining chain tension and brake adjustment

Drivetrain Optimization:

  • Smaller rear cog (10t vs 14t) paired with smaller chainring (18t vs 25t)
  • Maintains similar gain ratio (3.85 vs 3.8) while reducing weight

Other Significant Changes

Weight Reduction: 2+ pound weight savings (15.1-15.8 lbs vs 17.15-17.95 lbs)

Geometry Refinements:

  • Lower minimum saddle height (17.7" vs 18.1") for younger/smaller riders
  • Increased bottom bracket drop for lower center of gravity
  • Shorter chainstays and wheelbase for improved maneuverability

Component Upgrades:

  • More spokes in wheels (20h vs 16h) for improved durability
  • Sealed cartridge bearings throughout for better longevity
  • Upgraded saddle, grips, and cockpit components
  • Kenda Booster tires (replacing Innova) with slightly wider profile

Features Removed in MKII

  • MKI had double aluminum chainring guards that were removed in MKII and replaced with a chainguard.

What Stayed the Same

  • 16" wheel diameter
  • 60mm travel fork option with same specifications
  • Hydraulic disc brakes (though brand changed)
  • Recommended inseam range (16" to 22")
  • Aluminum frame material (6061)
  • Internal cable routing

The Most Advanced 16" Mountain Bike

Packed with mega smart features

Prevelo Bikes - Zulu Two - Standard

THRU-TUBE™ Frame

The unique THRU-TUBE™ is designed to keep riders low, confident and agile. It unlocks class-leading low seat height and seat height range, and improves pedaling ergonomics while keeping the rider's feet close to the ground.

Balance-Tec™

The Zulu Two features the patent-pending BALANCE-TEC™ system, the first-ever balance-bike-to-pedal-bike conversion that doesn't compromise pedaling performance. The system's innovations include a self-extracting crank, protective bottom bracket shields that serve as footrests in balance bike mode, and an integrated chainstay key that enables chain removal and installation without breaking the chain. This proprietary design allows the bikes to be converted between pedal and balance modes in minutes without special tools while maintaining consistent handling characteristics in both configurations.

Learn more about BALANCE-TEC

Precision Dropouts

Adjustable rear dropouts provide precise chain tension control. They also make tire changes easier by maintaining chain tension and brake adjustment during wheel removal.

Kid Optimized Cockpit

This is where little riders command these steed. It's decked out with ultra small diameter lock-on grips and short reach brake levers that are optimized for small hands.

Compact Drivetrain and Kid Size Cranks

A new smaller rear cog combined with a smaller chainring reduces weight while maintaining climbing-friendly gear ratios. The HEIR cranks have a narrow Q-factor and short length to be ergonomic for young riders.

Promax Hydraulic Disc Brakes

Powerful hydraulic disc brakes give kids plenty of stopping power on long descents.

Release The Stoke.

What the Press Says about the Zulu Two

ULTIMATE KIDS MOUNTAIN BIKE

This bike was truly designed from the ground up for kids allowing them to progress and explore trails like never before.

The Loam Wolf

Bike Awards 2020

The most trail-capable 16-inch kids’ bike we’ve ever tried.

Bicycling Magazine

Exceptional - 5 Stars

Got yourself a baby shredder? Then they likely need the Prevelo Zulu Two!

Two Wheeling Tots

Gold A'Design Award

Zulu Two Heir Mountain Bike For Kids by Prevelo Bikes is Winner in Baby, Kids' and Children's Products Design Category, 2021 - 2022.

A'Design Awards

This bike is exactly what we were looking for. The fork is truly incredible with its ability to soak up bumps with lightest of weight riders. Wide rims and wide tires offer amazing traction and enhance the shredability with its longer wheelbase, 67 degree HA and hydraulic dis brakes. The kids specific handlebar, grips and cranks are welcome features for these tiny rippers. If your little 4/5 year wants to descend MTB flow trails with you...this bike is the answer.

The Bike Dads

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

1 6
Customer Reviews
4.9 Based on 129 Reviews
5 ★
94% 
121
4 ★
6% 
8
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
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Customer Photos
Zulu Two - Customer Photo From Wayne Dibblei
Zulu Two - Customer Photo From Dane Palarinoi
Zulu Two - Customer Photo From Tierney Lakei
Zulu Two - Customer Photo From Tierney Lakei
Zulu Two - Customer Photo From Christopher Girardi
Zulu Two - Customer Photo From Callie Cribleyi
Zulu Two - Customer Photo From Philippa Nortoni
Zulu Two - Customer Photo From Philippa Nortoni
Zulu Two - Customer Photo From Philippa Nortoni
Zulu Two - Customer Photo From David Brookei
Zulu Two - Customer Photo From David Brookei
Zulu Two - Customer Photo From Alex Tellezi
Zulu Two - Customer Photo From Alex Tellezi
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Filter Reviews:
DM
03/25/2025
Dylan M.
United States

Don't wait!

This is the best purchase we've made in a long time. Proud to have my son rolling it. Fits perfectly, geometry inspires confidence, build quality is high and customer service is excellent! Upgrade to the HEIR fork is a must too. Functions extraordinarily well even for his mere 35lb weight. Only thing I would have changed was purchasing it earlier. Woo!

Zulu Two
Was this helpful?  0    0
WD
03/18/2025
Wayne D.
United States

Great bikes, this is our second one.

Learning how to ride a bike on a really good bike is much easier for the little ones. We started with the Zulu One and our Granddaughter finally learned to pedal but the bike was a bit small. Ordered the Two and it is awesome, she has been riding all over. The other one will go to Granddaughter two, then the 3rd one coming in September. I will continue to buy Prevelo bikes. Ships quick, easy assembly, and a great bike.

Prevelo Bikes Zulu Two Review
Zulu Two
Was this helpful?  0    0
JY
03/16/2025
Joshua Y.
United States

Top notch

Everything about this build is geared toward helping to make a kiddo feel confident with their riding experience. My son certainly loves his bike, he’s been on a Prevelo since he could throw a leg over. I don’t think you will have any regrets about it, it feels more of a positive investment than a simple purchase.

Zulu Two
Was this helpful?  0    0
DP
10/25/2024
Dane P.
United States

The Perfect Trail Bike for Young Riders—Prevelo Exceeded All Expectations!

My 5-year-old son has fallen in love with biking, and after outgrowing his first bike (a Woom), I knew I needed to find something special for his next ride. After weeks of researching, I landed on the Prevelo, and I couldn’t be happier with the choice. My son is a huge Fabio Wibmer fan, so I wanted a bike that could match the look and feel of a real trail bike—and this bike delivers! The Prevelo has been an absolute hit. Everywhere we go, people stop us to compliment the bike. My son is so in love with it that he insists on biking to school every day—no more car rides for him! If you’re looking for the best bike for your child, this is it. Prevelo has nailed the design, quality, and feel. To top it all off, their customer service is exceptional. I had a few questions and reached out via email, and even the owners got in touch to make sure we were satisfied. They truly care about their customers, and it shows. If you want a top-notch bike for your child and to support a fantastic small business, Prevelo is the way to go!

Prevelo Bikes Zulu Two Review
Zulu Two
Was this helpful?  0    0
EB
12/29/2023
Eric B.
United States
  • Fit SmallPerfectLarge

Best quality kids bike out there

Quality components on a bike of this size aren’t found very often or really ever. This one is good! Best kids bike by miles for sure.

Zulu Two
Was this helpful?  0    3
Prevelo Bikes - Zulu Two - Standard

Zulu Two

From $649.00

The new Zulu Two builds on its legacy of innovation with significant weight reductions and groundbreaking BALANCE-TEC™ conversion system. The patent-pending BALANCE-TEC system is the first-ever balance-bike-to-pedal-bike conversion that doesn't compromise pedaling performance.


The Zulu Two also features:

Version

  • Standard
  • HEIR

Color

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

Wheel Size

16 in

Type

Trail Bike

Use

Dirt path, single-track

Speeds

Single

Weight

15.1 to 15.8 lbs

Min Saddle Height

17.7 in / 450 mm

Max Saddle Height

25.2 in / 640 mm

Wheelbase

30.15 in / 766 mm

Tires

Kenda Booster 16 × 2.2

Saddle

HEIR Frame Hugger™ Little Kid - Alloy Reinforced

Derailleur

-

Cassette

10t 1pc driver

Crank

Lightweight Aluminum 3 piece. Narrow Width, 95mm length, 146mm Q factor

Brakes

Promax DSK 940 Hydraulic Disc
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