Downdraft Intake and Exhaust
The combination of 79 mm bore and short 50.9 mm stroke produces a high-revving engine with plenty of room for large titanium valves. The engine breathes and revs — the keys to making power. As well, the DOHC cylinder-head design let our engineers straighten out the intake and exhaust tracts to improve power and response. The intake is shorter and just about arrow straight, and the exhaust flows more efficiently too. You’ll experience more power and better throttle response. |
Plenty of Torque
More torque at low revs means better drive out of corners, so our engineers focused on the shape of the piston and connecting rod, while optimizing valve timing to help prioritize combustion consistency and thereby exhaust efficiency at lower revs. The bridged-box design of the piston uses a reinforcing structure between the skirt and the wrist-pin bosses that helps enable a high redline. Big torque down low, huge power up top. A winning formula. |
Durable Clutch
The CRF250RX uses a nine-plate design to improve durability and hookup. That means less slip at peak horsepower, better torque transmission through the clutch pack, and greater durability. Clutch pull remains light and engagement is easy to modulate. |
New HSTC
New on the CRF250RX for 2025, Honda Selectable Torque Control (HSTC) works to minimize rear wheel spin (thus wasted forward drive) and maximize traction. It doesn’t use a wheel-speed sensor, and, importantly, maintains feel at the throttle while managing power — ignition timing and the PGM-FI system are adjusted when the rate of change of RPM goes over a set amount. With three settings plus off to choose from, you can have your bike dialed no matter how much traction there is. |
Better Breathing
To help the CRF250RX breathe more freely, engineers redesigned the entire air-intake system. A new airbox, new filter position and new intake funnel combine to reduce restrictions to airflow. The result? Better throttle control and more consistent power delivery. |
Revised Exhaust
In combination with its less-restrictive air-intake system, the CRF250RX’s revised exhaust with straighter airflow means smoother engine operation in the mid- to high-rpm range and more-controllable acceleration. |
Single Muffler
The single muffler exhaust uses a pressed-alloy design for better rider ergonomics and lighter weight. The CRF250RX naturally uses a single-pipe header. It routes close to the center of the bike, and its light overall construction helps improve weight distribution. |
HRC Launch Control
HRC Launch Control: push the button to select the mode, hold the throttle open, release the clutch, and the bike will do the rest, launching you into the first turn with a big advantage. |
Engine Mode Select (EMS)
This simple handlebar-mounted button lets you dial in engine power delivery character with a push of your thumb. Choose between Standard, Smooth, and Aggressive, depending on track conditions. |
Revised ECU Settings
Our engineers never stop searching for ways to make it easier to go faster. Revised ECU settings combine with the other chassis and powertrain improvements to make the CRF250RX an all-around better performer. |
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New Aluminum Fram
Improved Showa For
Easier Shock Access
Short Swingarm
Large Front Brake
Black Rims
Electric Start
Big Radiato
High Capacity Fuel Tank
Extra Protection
Flat Seat/Tank Junction
Lightweight Sidestand
Cool Running
