How big is a 125cc dirt bike? Dirt bike size

The average seat height of a 125cc dirt bike would be from 26 inches to 38 inches. The size of the dirt bike depends on the height of the individual and the engine’s capacity. 

A dirt bike's engine capacity would be from 50cc to as much as 650cc, whereas the individual riding the bike can have a height from 4.5 feet to 6.5 feet. Dirt bikes with 50cc to 125cc engine capacity are for beginners. Any dirt bikes with more than 125cc engine capacity are for professional riders.

If you are having a tough time determining the appropriate size of a dirt bike, this article is going to be a complete guideline to find out the appropriate length of the bike.

Dirt bike size

Types and size of dirt bikes

50cc

This is the most basic dirt bike that you would notice on the market. The main consumers of a 50cc dirt bike are toddlers and kids under 9 years of age.  The average seat height of a 50cc dirt bike would be from 22 inches to 25 inches. If you are looking for a 50cc dirt bike to buy for your kids under 9, you can consider choosing this Honda CRF-110F or Yamaha TTR-50E to have a decent experience. If you want to buy low cc drit bike for you kids you shoud must check the dirt bike size for 9-12 years old.

110cc

The next category of dirt bikes that kids around 9 to 12 years of age prefer falls in the 110cc category. The average seat height of a 110cc dirt bike will be from 24 inches to 31 inches. If your kid is growing too fast, instead of buying a 50cc bike, you can consider choosing a 110cc engine capacity to make it compatible in the long run. The two most popular110cc dirt bikes on the market are Kawasaki KLX-110L and Yamaha TTR-110E.

125cc

110cc and 125cc dirt bikes tend to come with the same seat height. The average seat height of a 125cc dirt bike would be from 26inches to 38 inches. 125cc dirt bikes are one of the most popular categories both for kids and adult beginners. Almost all dirt bike manufacturers produce a variety of 125cc dirt bikes with different seat heights and lengths. The two most popular 125cc dirt bikes are Suzuki DR-Z125L and Yamaha TT-R125LE.

140/150cc

Professional dirt bikes come with the least engine capacity of 140/150cc. The average seat height of a 140/150cc dirt bike would be from 34 inches to 38 inches. Although not many professional dirt bike riders use a 140/150cc dirt bike, the riders who have a high aspiration to do better can consider having a 140/150cc dirt bike to begin their professional career. The two most popular 140/150cc dirt bikes are Kawasaki KLX-140 and Honda CRF150F.

250cc

Professional riders with around 5.10 feet of height prefer 250cc dirt bikes. The average seat height of a 250cc dirt bike would be from 35 inches to 39 inches. 250cc dirt bikes are one of the most heavy-duty dirt bikes that you would notice in the professional dirt racing sector. You require to have excellent skills to maneuver a 250cc dirt bike. The two most popular 250cc dirt bikes are Yamaha TTR-250 and Honda CRF250L Rally.

450cc

Between 250cc and 450cc, some other varieties of dirt bikes are also possible with different engine capacities. Most of those bikes tend to come with 34 inches to 39 inches of set height. The category that makes us wonder is the bike with 450cc of engine capacity. Most dirt bikes with 450c of engine capacity will have a seat height between 36 inches to 38 inches. Professional riders who have around 6 feet of height prefer riding with a 450cc dirt bike. The two most popular 450cc dirt bikes on the market are Yamaha WR450F and Kawasaki KX 450.

650cc

The last kind of dirt bike that this article is going to talk about is the 650cc category, which is the highest cc production that a dirt bike will produce. The average seat height of a 650cc dirt bike will be from 34.8 inches to 37 inches. 650 cc dirt bikes are not a popular option for all types of riders. You need to have a high-end dexterity level to maneuver a 650cc dirt bike. The two most popular 650cc dirt bikes on the market are Honda XR650L and Suzuki DR650S.

Size chart with engine capacity

Engine's capacity

Seat  height

50cc

22 inches to 25 inches.

110cc

24 inches to 31 inches.

125cc

26inches to 38 inches.

140/150cc

34 inches to 38 inches.

250cc

35 inches to 39 inches.

450cc

36 inches to 38 inches.

650cc

34.8 inches to 37 inches.


Dirt bike size with height

The engine is not the only factor that determines the size of the bike. The height of the individual is another most influential aspect that determines whether the size of the bike will be larger or smaller. You can choose a bike with any engine’s capacity but you can’t choose 24 inches bike with a height of 6 feet. You need to pick up the right seat height according to the height that you have.

  • If your child’s age is between 3 to 6 years, the average seat height of the bike should be around 18 inches.
  • From 6 to 9, the average seat height should be between 16 inches to 25 inches.
  • For the age of 9 to 10, the average size of the bike should be between 25 inches to 29 inches.
  • If your age falls between 10 to 12 years, the size of the bike should be between 26 inches to 32 inches.
  • For the height between 5.2 feet and 5.4 feet, the size of the seat should be around 29 inches.
  • For the height of 5.4 feet to 5.8feet, the size of the seat should be around 37 inches.
  • From 5.8 feet to more than 6 feet, the height of the seat should be around 39 inches.

Dirt bike Size chart with height

Height/age

Seat height

Engine capacity

3 to 6 years of age

around 18 inches

50cc

6 to 9 years of age

16inches to 25 inches

50/70cc.

9 to 10 years of age

25 inches to 29 inches

110cc.

10 to 12 years of age

26 inches to 32 inches

110/125cc.

5.2 feet to 5.4 feet.

28 inches to 33 inches

125cc.

5.4 feet to 5.6 feet

29 inches to 34 inches.

140/150cc

5.6 feet to 5.8 feet.

34 inches to 37 inches

150/250cc

5.8 feet to 5.10 feet

35 inches to 38 inches

150/250/ 230/450cc.

6 feet and taller

36 inches to 39 inches

450/650cc and up.

dirt bike Size chart with height
dirt bike Size chart with engine capacity

Final words

Choosing the right size of the bike is necessary to have a decent experience while riding. If you are having a tough time picking up the right, this whole article should be a proper guideline to follow. Besides, you can always customize the height according to your need.

Last Updated on September 30, 2021 by sajjad