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2021 CRF250RX Honda Dirt Motorcycle Review Specs Price

Off-road racers Tarah Gieger, Jonathan Johnson, and Tallon LaFountaine have all raced on the CRF250RX, which boasts a huge fuel tank, aluminum side stand, and an 18-inch rear tire for the confined course. Off-road racing, desert racing, off-road Grand Prix competition, and trail riding in legal off-road places may all benefit from this machine’s off-road-specific engine tuning and suspension settings.

2021 CRF250RX Honda Dirt Motorcycle – Features and Price

2021 CRF250RX Honda Dirt Motorcycle


The CRF250RX has a unique ECU program that can be activated by pressing a button, holding the throttle open, and releasing the clutch, and the bike will take care of the rest, giving you a significant advantage in the first turn. Is it possible to transform your bike into a holeshot-seeking machine?

Holeshot-Winning Power

The CRF250RX is built to take the lead in the opening turn of the race, so don’t be afraid to keep the throttle open. Increased low-end and mid-range torque will also be noticeable.

Bridged-Box Piston

For the CRF250RX, the bridged-box piston completes the engine package. Reinforcement structures between the skirts and the wrist-pin bosses help the CRF250RX reach its high redline.

High Redline

The CRF250RX’s rev limit is awe-inspiring thanks to its better-breathing DOHC architecture and the big-bore/short-stroke engine. Peak torque and power are the same.

High-Volume Air Cleaner

The air cleaner unit on the 2021 CRF250RX has a large surface area and capacity. What’s the result? More oomph!

Large-Capacity Radiator

You’ll get greater power from the start to the end of your journey if you have a larger radiator.

Large Valve Diameters

Valves on the CRF250RX feature a big diameter of 33 millimeters for intakes and 26 millimeters for exhausts, making for a powerful combination. The twin-cam CRF250RX has a lot more flow, particularly when you’re picking it up at high RPMs.

2021 CRF250RX Honda Dirt Motorcycle

High-Performance Cam Profiles

The CRF250RX has been given a set of cams that improve the engine’s bottom-end torque and power while keeping the CRF250RX’s screamer peak.

Double-Spray Injector Settings

The fuel injection mechanism of the CRF250RX sprays twice with each intake cycle of gasoline. That improves fuel atomization without requiring additional weight or complexity. On the first ride, you’ll notice a noticeable increase in power in the mid-range and on the over-rev.

Throttle Body

The throttle body of the CRF250RX has a 44mm venturi to increase airflow, which is especially useful at low engine speeds. Power and snap are yours right now.


The CRF250RX has a distinctive finger-follower rocker configuration for its DOHC engine. Combined with the remainder of the engine’s design (bore and stroke, inlet tract, piston, and more), you gain greater power and a higher redline.

Big Bore/Short Stroke

Our engineers developed a high-revving engine with plenty of capacity for huge valves thanks to the CRF250RX’s 79mm bore and short 50.9mm stroke. Enduro racing relies on the engine’s ability to breathe and rev to produce significant amounts of force.

2021 CRF250RX Honda Dirt Motorcycle

Clutch Design and Materials

The CRF250RX’s clutch is made up of two different materials. Why? Increased horsepower doesn’t need a more oversized, more cumbersome grip—the faster the engine revs, the lighter the engine’s spinning weight.

Downdraft Intake and Exhaust Layout

The CRF250RX’s intake and exhaust passages were straightened out thanks to the DOHC cylinder head design. The exhaust is more efficient, while the intake is shorter and almost arrow straight. Athletes and bike engines alike can’t win a race if they try to run while holding their air. Both power and throttle responsiveness will improve.

Engine Mode Select Button

To change the nature of the engine’s power delivery, all you have to do is press this handlebar-mounted button. Depending on the course conditions, you may choose between Standard, Smooth, or Aggressive.

Engine Oil Scavenge Pump

A specific oil scavenging pump is located deep inside the engine. The CRF250RX’s overall design is more compact because of this feature, which you won’t be able to see.

Gear-Position Engine Mapping

If it isn’t impressive, then I don’t know what. The ECU of the CRF250RX has specific engine programming for each of the three gears. Having your engine generates ideal power for each gear option is a trait that differentiates CRF250RX riders from the others in this class since you can’t surrender an inch.

Gradual Pipe-Bend Radius

Observe how the CRF250RX’s two exhaust pipes curve out of the head in a slow, large-radius fashion before returning to the mufflers in a straight line. When it comes to power, a well-tuned exhaust system with low-mass pipes and twin silencers is essential, as is lowering the CRF250RX’s center of mass.

“H” Section Crank

See the “H” cross-section design in the CRF250RX’s crankshaft profile. What’s going on here? “I” beams in airplane wings and skyscrapers enhance strength and decrease weight over a traditional crankshaft shape—a significant thing when you consider that this section rotates at more than 14,000 rpm!

High-Capacity Resin Fuel Tank

The CRF250RX has a larger gasoline tank with a capacity of 2.25 liters, making it ideal for longer enduro loops.

Lithium-Ion Battery

The CRF250RX’s Lithium-Ion battery, like the rest of the bike, is both light and powerful. A standard lead-acid battery weighs more than twice as much as this lightweight alternative.

Refined Dual-Exhaust System

The CRF250RX’s dual-exhaust system is small, light, and near the frame for better handling by removing weight from the rear end and increasing mass in the middle. More excellent airflow means more power, so it’s a win-win situation.

Shared Engine/Gearbox Lubrication

The oiling system for the engine and gearbox is integrated into the CRF250RX of 2021. Why? The right-side cam drive and clutch are so near together that combining the two systems helps save weight and increase engine compactness.

2021 CRF250RX Honda Dirt Motorcycle

Titanium Intake and Exhaust Valves

The reciprocating masses of a high-revving engine should be light. So, the CRF250RX has titanium valves for both the intake and exhaust ports. In addition, the valve has a slight 20.5-degree angle (included). The set is completed with ovalized valve springs and Diamond-Like Carbon (DLC) coated finger rockers.

Total Air Management

The term “total air management” refers to all aspects of airflow, including intake, head, and exhaust. When losses are eliminated, the whole system gains strength. Lastly, and maybe most importantly, it’s free power—all you need is a well-designed bike.


The Dunlop Geomax tires for the CRF250RX were explicitly developed for off-road usage. 80/100-21 front tires and 110/100-18 rear tires are included on the AT81 tires’ spec sheet. The rear wheel of the CRF250RX has an 18-inch diameter.

260mm Front Brake

The 260mm front brake disc on the CRF250RX is massive. Great braking sensation and a pattern that reduces weight are included in the package. The set consists of front and rear brake-disc protectors.

Low Battery Mounting

The CRF250RX features a lower center of gravity because the battery is lower in the chassis.

Low Rear Shock Mount

The CRF250RX sports a lower center of gravity (CG) and better chassis stability because of the quiet location of the rear shock mount on the frame.

Short Swingarm

CRF250RX’s short swingarm contributes to the bike’s weight reduction, as well as enhanced rear-wheel traction and less unsprung mass, which is crucial given the bike’s power output.

Showa® Spring Fork

CRF250RX front suspension accuracy, handling, and feel are improved with the 49mm Showa® fork with a traditional spring design. The supple action and plush feel are ensured by the 39mm piston and 25mm rod diameters.

Twin Spar Aluminum Frame

The lower engine cradle on the CRF250RX is similar to the lower engine cradle on the CRF450R motocrosser. The 250’s excellent handling is built on this basis.


The black DID rims look great, even if they don’t improve performance.

Flat Seat/Tank Junction

The titanium gasoline tank on the CRF250RX has a flat seat/tank junction. Because of the improved ergonomics, moving forward and backward on the bike is a lot simpler.

“In Mold” Graphics

One will spend a lot of time in the victory circle, so you’ll want to look your best. With the CRF250RX, you’re in good hands. Our “in mold” graphics look fantastic and last longer than other types of pictures.

2021 CRF250RX Honda Dirt Motorcycle

Rear Subframe

I extruded rear members in the subframe of the CRF250RX, resulting in a weight savings of 20% over the previous generation’s CRF250R. As a result, the CRF250RX’s low center of gravity is aided by that weight being off the bike’s top.

2021 CRF250RX Honda Dirt Motorcycle – Price

The new 2021 CRF250RX Honda Dirt Motorcycle is available at $8,399 only.

2021 CRF250RX Honda Dirt Motorcycle – Technical Specifications


Type 249cc, liquid-cooled, single-cylinder, four-stroke
Valve Train DOHC, four-valve, 33mm intake, titanium; 26mm exhaust, titanium
Bore x Stroke 79mm x 50.9mm
Compression Ratio 13.9:1
Induction Programmed fuel-injection system (PGM-FI), 44mm throttle bore
Ignition Full transistorized
Starter Push-button electric starter
Transmission Constant-mesh 5-speed return; manual
Clutch Multi-plate wet (6 springs)
Final Drive #520 sealed chain; 13T/48T


Front 49mm of fully adjustable leading-axle inverted telescopic Showa coil-spring fork with 12 inches travel
Rear Pro-Link system; fully adjustable Showa single shock with 12.4 inches wheel travel


Front 2-piston caliper (30mm, 27mm) hydraulic; single 260mm disc
Rear 1-piston caliper hydraulic; single 240mm disc


Front Dunlop Geomax AT81 80/100-21 with tube
Rear Dunlop Geomax AT81 110/100-18 with tube


Rake (Caster Angle) 27°18’
Trail 115mm (4.5 inches)
Length 86 inches
Width 32.6 inches
Height 49.7 inches
Ground Clearance 13 inches
Seat Height 37.8 inches
Wheelbase 58.5 inches
Fuel Capacity 2.25 gallons
Color Red
Curb Weight 244 lbs.

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