Best Bike Size For 3-4 Year Old Girls & Boys Reviews

Are you looking for the best bike size for 3-4 years old kids? If so, then stay tuned in this article because we will share you our top 5 picks that will surely make your child happy and enjoyed throughout the day while learning how to balance on a bike.

If you’re ready, then read on!

What Size of Bike Does Your Child Need?

When selecting a bike for your grown-ups, you should use the size of the frame as your reference point. However, in terms of kids’ bikes, you should use the diameter of the wheel as the main reference point. The reason for that is because child’s wheel sizes will determine the proportions for the rest of the bike. Moreover, children’s wheel sizes are usually available in 12, 16, 20, and 24 inches. 26 inches are for standard sized grown-ups.

Generally speaking, 12 inch wheels are engineered for children starting off biking and aged between 3-4 years of age. But aside from that, by the time your kid is 14 years old, you’ll probably be seeking for a 24 inch wheel.

Now, how do you actually know the right size for your kid?

Well, the general rule of thumb here is to utilize a sizing chart. For all you know, sizing charts are available from all good bike stores and websites. Of course, there are some slight differences in some of them, particularly when moving to adult sizing charts. However, for kids they do keep fairly the same.

Best Bike Size for 3-4 Years Old Girls & Boys Reviews

1. RoyalBaby Freestyle Kid’s Bike for Boys and Girls, 12 14 16 inch with Training Wheels, 16 18 20 inch with Kickstand, in Multiple Colors

Royalbaby Freestyle Kid's Bike, 14 inch with Training Wheels, Green, Gift for Boys and Girls


If you’re looking for a kid’s bike that comes in various sizes and colors, this bike from RoyalBaby is the ideal pick for your kid. This bike comes with multiple extra parts that can be used to aid children in learning how to ride their bike the right way.

Its frame is sturdy and comes with enough support and stability to let your kid have the ultimate balance. Moreover, this bike is really easy to ride. Additionally, it is comfortable and fun to ride on the road. Now in terms of older kids, they will want to do as many tricks as they can.

Its rubber tires are heavy duty and constructed of pneumatic rubber with steel inside the wheel. This is especially good if you’re looking for a bike that is long lasting even though it is not too pricey.



  • Comes with reasonable price
  • Responsive rear hand brakes
  • Durable and supportive frame
  • Compliant with ISO and CPSC Standards
  • Comfortable contouring seat


  • Its training wheel bolts tend to loose without extra fasteners


2. RoyalBaby Stargirl Girls Bike, Easy Assembly Kids Bike, Training Wheels for 12″ 14″ 16″, Kickstand for 16″ 18″ Bicycle, Gift for Girl

Royalbaby RB12G-1P Stargirl Girl's Bike with Training Wheels and Basket, for Kids. 12 Inch Wheels, Pink


Constructed with a girly girl in mind, this bike from RoyalBaby is very beautiful and comes with many extras that you don’t even expect. Its steel frame makes for a smooth and easy ride. In addition to that, it’s also strong and can withstand heavier kids.

The frame is done in chrome blue paint with pink accents and white tires. What makes everything better is that it comes with blue wick basket on the front for all your little girl’s outdoor needs. In fact, she could decide to put her favorite teddy, dolly, or anything necessary that she needs while on the go.

Furthermore, its pink adjustable seat is a little bit different to other bikes since it’s more contouring and comes with a small back so it is even extra comfortable and can be ridden for extra amount of time. Aside from that, its handlebars also come with extra padding for additional comfort, not to mention that they’re pink!



  • Can withstand heavier riders
  • Comfortable and adjustable seat
  • Extra components like training wheels
  • Elegant style and simple design
  • Easy to assemble


  • The instructions that comes with it is quite difficult


3. RoyalBaby Honey and Buttons Kids Bike, 12-14-16-18 inch Wheels, Gift for Boys and Girls

RoyalBaby CubeTube Matte Buttons 12" Bicycle for Kids, Pink


This bike from RoyalBaby brand comes with a very simple steel frame construction that will surely look fun to certain children.  The frame construction is based around one square front tube. In fact, it looks really similar to balance bikes though with larger wheels.

Its design may then be an impressive approach to break your kid into pedal bikes with a design that they’re already used to riding. Both its Honey and the Buttons come with a durable and lightweight foam saddle.

Speaking of saddle, it comes with an easy to hold handle at the back. The handle will surely be comfortable for you to hold on the day that you take the training wheels off. And lastly, it comes with a simple feature that can deliver confidence to your kids and have them pedaling off into the distance immediately.


  • Comes with heavy-duty training wheels, designer frame pad, kickstand, assembly tool and a bell
  • Quando-coaster and front handbrake give double safety
  • Single speed with one piece crank
  • 4 inches wide tires to guarantee high-riding stability
  • Unique square-tube frame with different fashionable colors


  • Quite heavy
  • Its hand break seems a bit flimsy


4. RoyalBaby Jenny & Bunny Girl’s Bike, 12-14-16-18 inch Wheels, Three Colors Available

Bunny Girl's Bike Fushcia 12 inch Kid's bicycle


This yet another bike from RoyalBaby is well-constructed. Its color is impressive, and its classic white wall tires make the vibrant pink rims exceptional. In addition to that, this bike features a front hand brake amalgamated with the rear coaster brake which ultimately give many options to learn how to stop the bike.

Moreover, the quick release seat post makes adjustments easy and hassle-free. Its fully enclosed chain-guard keeps your kid safe, while its flange grip precludes hands from sliding off the bars. On the other hand, its training wheels are engineered to dampen noise which enhances hearing ability.



  • The flange grip aids precludes hands from sliding off the bars
  • Its fully enclosed chain-guard keeps your child safe
  • Its training wheels are engineered to dampen noise which enhances hearing ability
  • Classic white wall tires make the vibrant pink rims stand out
  • Good quality, well-constructed, and rides well


  • Pedals need extra fine-tuning and inspection
  • The quality of the bell and bows seem not that great


5. JOYSTAR Kids Bike for Girls & Boys, Training Wheels for 12 14 16 inch Bike, Kickstand for 18 inch Bike (Blue Ivory Pink Green)

JOYSTAR 12 Inch Kids Bike for 2 3 4 Years Boys, Child Bicycle with Training Wheels & Coaster Brake, Blue, Toddler Cycle, 85% Assembled


The JOYSTAR Kids’ bike comes with a superior steel frame design that can withstand all the harshness of learning how to bike. It is incorporated with removable training wheels to aid your little one to learn how to bike. In addition to that, it is 85% assembled and comes with assembly tools to guarantee a hassle-free construction for you. Also, its roast brake guarantees your child’s safety.

The included training wheels will improve stability for your child for extra safety. In addition to that, the wheels can be detached once your kid learns to pedal to make them learn how to balance.

Moreover, this particular bike from JOYSTAR features an easy to adjust seat to give different heights making it suitable for children of different heights. And lastly, you can pick from its 12, 14, or 16 inches sizes for an ideal fit for your kid. Its saddle comes with a holder that you might want to hold and air your kid to balance while on the process of learning.



  • Simple design and coaster brake
  • Personalized chain guard
  • Neutral design
  • Easy to assemble
  • Sturdy construction


  • Doesn’t come with a kickstand 


Why It’s Important to Get the Right Fit?

Despite what some people say, picking the appropriate size bike is not a precision science. Charts and guides are effective but nowhere near as useful as observing your child actually tests out a bike. The main takeaway here is, the bike must fit the child, and not the other way around.

Safety is crucial. This is the reason why you must never purchase a bike that is too big for the sake of your kid in the hope that they will grow into it. Your kid must be able to sit astride the middle of the bike with their feet flat on the ground on either side of the bicycle with a nice inch or two of clearance. Your kid must not have to lean the bike one way or the other way to get a foot flat down on the ground.

You also need to consider what will happen if they suddenly want to hop off the bike immediately. This is particularly true if your child is a boy. The bike must only come with a slight lean when your child places their butt onto the seat, places one foot on a pedal, and then scoots away.

When your kid is riding away, they should be seated in a mostly upright position, and their legs and knees must not be bouncing of the handlebars. But apart from that, their legs must not be totally stretched out at the lowest vertical position of the pedals as well. Remember that there must always be a slight bend in the leg.

Kids must also be able to turn the handlebars in a sweeping motion to their full capability without being totally stretched. Younger kids tend to utilize the turning arc of the handlebars in order to steer more compared to older kids who’ll also use balance to negotiate corners and turns.

Why Do Certain Children Bikes Seem to Weigh as Much As My Own Bike?

Luckily, this is no longer necessarily the thing. The catch here is that it used to be that children’s bikes would be the only thing a destructive typhoon would leave behind. The inexpensive ones still are.

But more normally these days, most bike producers now provide good value lightweight bikes for your child. This is a crucial fact to be conscious of since proportionally speaking, children’s bikes are more difficult to pedal compared to adult bikes anyway because of the smaller wheel base. That’s why; try to purchase a bike that is light as you can.

Factors to Consider When Picking the Best Bicycle for 3-4 Years Old

It’s easy to pick the right bike size for your 3-4 year old child that will fit right since they have been able to try their hands on some other model of bikes.

Seat Height – the seat is ideal when it’s at the right size for the child. However, an adjustable seat is perfect so that it can be adjusted while the kid is growing.

Centre of Gravity – the lower the seat, the greater. It can provide the child better balance and comfort.

Budget – all 3-4 year-old needs on a bike are essential features. So you don’t need to apply an extravagant price range just to get your kid a bike.

Brakes – brakes are another crucial component of every bike. The most ideal bike brakes are the disc brakes as they’re easy to use and make stopping very secure for your kid. They are also good in different weather.

Safety – when picking an ideal bike for your kid’s needs, make sure to put safety factor first. Choose a bike that will fit the child well in order to preclude accidents like hurting the feet. In addition, try to avoid undersized bikes since they might cause joint pains. 


Remember that you should get the right size at the right time. Also, make sure that the bike fits. Try to use sizing charts and guides but keep in mind that they are only guides.

What you want to do is make sure they look comfortable on the bike. Make sure your child wants the bike you’re purchasing. Purchase the best you can buy with your allocated budget. You shouldn’t really get bothered with all the heavy fancy gadgets, whistles, and bells bolted on to appeal to easily influenced minds.

You can also try to acquire expert advice but try to execute some research first so you can at the very least comprehend what the expert is talking about.

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