For 2020 we have TONS of quality options to choose from when it comes to picking an adult dirt bike. But when it comes to choosing the best adult dirt bike for you we need to break it down a bit more. 

What defines an adult dirt bike?

Is it the size of the motor? Nope.

Is it a 2 stroke or a 4 stroke. Nope.

Seat Height!

Really what comes down to is the seat height. Having a proper seat height for how tall you are is actually more important then most people realize.

Yes, can an adult ride a dirt bike that is too small for them? Yes, but it actually isn’t very safe as it ruins the balance of the dirt bike.

Why you ask?

Dirt bikes are designed for the rider to be in the stand-up attack position. When you are too big for the bike you run this balance.

Now, let’s get to talking about the best dirt bikes for adults in 2020.

You can ride a dirt bike in many different situations, this means the dirt bike manufactures have built specific adult dirt bikes for specific riding times. You have adult motocross dirt bikes, Enduro dirt bikes, trail riding dirt bikes, and cross country dirt bikes.

Dirtbike Sam


Troy Lee Youth SE4 Factory MIPS Helmet
Dirt Bike Tusk Scissor Lift stand
Gaerne Racing dirt bike bootks

Types of dirt bikes for Adults

  • Motocross
  • Enduro
  • Trail riding
  • Cross Country
Adult Motocross dirt bike

Best adult motocross dirt bikes

Motocross dirt bikes are set up to perform their best while riding on a motocross. This means that the suspension is tuned for jumping and cornering. The power delivery and gearing are also set up for motocross. Typically the motocross dirt bikes are the cream of the crop so to speak. The dirt bike manufacturers usually release all the new technology into the motocross dirt bikes first. 

Best Adult Honda Motocross Dirt Bikes

Adult honda motocross dirt bike
  • 2021 Honda CRF450R
  • 2021 Honda CRF250R

Best Adult Yamaha Motocross Dirt Bikes

2020 Yamaha YZ450F
  • 2021 Yamaha YZ450F
  • 2021 Yamaha YZ250F
  • 2021 Yamaha YZ250
  • 2021 Yamaha YZ125

Best Adult Kawasaki Motocross Dirt Bikes

Adult Kawasaki Motocross bike
  • 2021 Kawasaki KX450
  • 2021 Kawasaki KX250

Best Adult KTM Motocross Dirt Bikes

2021 KTM Motocross dirt bike
  • 2021 KTM 450 SXF
  • 2021 KTM 350 SXF
  • 2021 KTM 250 SXF
  • 2021 KTM 250 SX
  • 2021 KTM 150 SX
  • 2021 KTM 125 SX

Best Adult Husqvarna Motocross Dirt Bikes

2021 Husqvarna
  • 2021 Husqvarna FC 450
  • 2021 Husqvarna FC 350
  • 2021 Husqvarna FC 250
  • 2021 Husqvarna TC 250
  • 2021 Husqvarna TC 125


Best Adult Suzuki Motocross Dirt Bikes

2020 Adult Suzuki Motocross dirt bike
  • 2021 Suzuki RMZ 450
  • 2021 Suzuki RMZ 250
Enduro offroad dirt biking

Best adult Enduro/Trail riding dirt bikes

Enduro and trail bikes are dirt bikes that are specifically built for hard enduro riding or singletrack. The Enduro dirt bikes typically are full fledge race bikes built to handle the gnarly terrain offroad. A trail dirt bike is typically a more mellow dirt bike used for just riding singletrack. 

Best Adult KTM Enduro Dirt Bikes

2020 KTM Enduro dirt bike
  • 2021 KTM 300 XCW
  • 2021 KTM 250 XCW
  • 2021 KTM 150 XCW
  • 2021 KTM 500 XCF-W
  • 2021 KTM 350 XCF-W
  • 2021 KTM Freeride E-XC

Best Adult Husqvarna Enduro Dirt Bikes

2021 Husqvarna Enduro Adult dirt bike
  • 2021 Husqvarna TE 300i
  • 2021 Husqvarna TE 250i
  • 2021 Husqvarna TE 150i
  • 2021 Husqvarna FE 501
  • 2021 Husqvarna FE 350

Best Adult Beta Enduro Dirt Bikes

Adult Beta dirt bike
  • 2021 Beta 300 RR
  • 2021 Beta 250 RR
  • 2021 Beta 200 RR
  • 2021 Beta 125 RR
  • 2021 Beta Xtrainer
  • 2021 Beta 500 RR-S
  • 2021 Beta 430 RR-S
  • 2021 Beta 390 RR-S
  • 2021 Beta 350 RR-S

Best Adult Sherco Enduro Dirt Bikes

Adult Sherco dirt bike
  • 2021 Sherco 300 SE Racing
  • 2021 Sherco 250 SE Racing
  • 2021 Sherco 125 SE Racing
  • 2021 Sherco 450 SEF Racing
  • 2021 Sherco 300 SEF Racing
  • 2021 Sherco 250 SEF Racing

Best Adult Yamaha Enduro / Trail Dirt Bikes

2020 Yamaha Adult Enduro dirt bike
  • 2021 Yamaha WR450
  • 2021 Yamaha WR250
  • 2021 Yamaha TTR 230 (Beginners bike)

Best Adult Honda Enduro / Trail Dirt Bikes

2021 Honda CRF 450X
  • 2021 Honda CRF450X
  • 2021 Honda CRF250X
  • 2021 Honda CRF250F (Beginners Bike)

Best Adult Kawasaki Enduro / Trail Dirt Bikes

Adult Kawasaki Trail dirt bike
  • 2021 Kawasaki KLX 300R
  • 2021 Kawasaki KLS 230R (Beginners Bike)
Riding dirt bikes cross country

Best Adult Cross Country Dirt Bikes

Cross country adult dirt bikes are dirt bikes that are designed for the fast, flowy, and open dirt biking terrain. Typically these Cross Country dirt bikes are deemed closed course race bikes. Usually, they are closely related to their Motocross brethren but come with offroad goodies. 

Best Adult KTM Cross Country Dirt Bikes

2021 KTM Cross country dirt bikes
  • 2021 KTM 300 XC TPI
  • 2021 KTM 250 XC TPI
  • 2021 KTM 125 XC
  • 2021 KTM 450 XC-F
  • 2021 KTM 350 XC-F
  • 2021 KTM 250 XC-F

Best Adult Husqvarna Cross Country Dirt Bikes

2021 Husqvarna
  • 2021 Husqvarna TX 300i
  • 2021 Husqvarna FX 450
  • 2021 Husqvarna FX350

Best Adult Beta Cross Country Dirt Bikes

2020 Beta RR Race Edition dirt bike
  • 2021 Beta 300 RR Race Edition
  • 2021 Beta 250 RR Race Edition
  • 2021 Beta 125 RR Race Edition
  • 2021 Beta 350 RR Race Edition
  • 2021 Beta 480 RR Race Edition
  • 2021 Beta 430 RR Race Edition
  • 2021 Beta 390 RR Race Edition

Best Adult Sherco Cross Country Dirt Bikes

2020 Sherco dirt bike
  • 2021 Sherco 300 SC
  • 2021 Sherco 250 SC
  • 2021 Sherco 125 SC
  • 2021 Sherco 250 SCF
  • 2021 Sherco 300 SCF
  • 2021 Sherco 450 SCF
  • 2021 Sherco 500 SCF

Best Adult Yamaha Cross Country Dirt Bikes

Yamaha YZ250X cross country dirt bike
  • 2021 Yamaha YZ 450 FX
  • 2021 Yamaha YZ 250 FX
  • 2021 Yamaha YZ 250 X
  • 2021 Yamaha YZ 125 X

Best Adult Honda Cross Country Dirt Bikes

2021 Honda CRF450RX
  • 2021 Honda CRF 450 RX
  • 2021 Honda CRF 250 RX

Best Adult Kawasaki Cross Country Dirt Bikes

Kawasaki XC models
  • 2021 Kawasaki KX 450XC
  • 2021 Kawasaki KX 250XC

With this we finish the list of the best dirt bikes for adults for 2021. In future i will go in more detail for each dirt bike as there are too many dirt bikes for you to choose from, so i picked what i think are the best.

Below we have some of your questions answered.

  • What's a good size dirt bike for adults?

    If you have some experience in riding dirt bikes and you are of average height and weight then a good sized dirt bike would be something like 2021 KTM 250 XC TPI, 2021 Beta 250 RR Race Edition or Yamaha YZ 250 FX. Choose 250cc dirt bike as they are fun to drive for any average sized person.

  • Should I buy a 250 or 450 dirt bike?

    A beginner to advanced dirt bike rider should choose 250cc engine for their dirt bike. 250cc dirt bikes are fun to drive and can ride through all trails. In contrast, 450cc dirt bikes are more for professional riders who can use the power of the engine for quick start, race or to pass obstacles easily.

  • What do I need to know before buying a dirt bike?

    If you are buying a new dirt bike, a 250cc dirt bike from any major dirt bike brand has enough power for all trails but it is not too powerful. Test one at dealership for your size. If you are buying a used dirt bike you need to check engine & oil, tires, wheels, suspensions and linkage.