Engine Displacement: 249.6 cc
The RM 250 is powered by a 249.6 cc single-cylinder, 4-stroke, 4-valve engine. It features liquid cooling and a unique upward balance shaft designed to counteract the aggressive vibrations of a high-compression enduro engine, allowing for smoother power delivery at high RPMs.
Max Power: 30 bhp @ 9,000 rpm
The RM 250 delivers a peak power of 30 bhp (approx. 25.83 PS). Titled the "Race Edition," this engine is tuned to scream at the top end, making it ideal for competitive dirt tracks where staying in the power band is critical for performance.
Max Torque: 22.5 Nm @ 7,000 rpm
With 22.5 Nm of torque, the RM 250 provides a substantial mid-range kick. The engine’s 11.6:1 compression ratio ensures that the combustion is efficient and the response from the throttle is immediate when exiting corners.
No. of Cylinders: 1
The single-cylinder layout is optimized for the narrowest possible chassis profile. The inclusion of the balance shaft is a premium addition here, distinguishing the RM from more vibration-heavy budget enduro models.
Valve Train: SOHC (Single Overhead Camshaft)
The SOHC 4-valve configuration keeps the cylinder head compact and light. This reduces the weight carried high up on the bike, which improves the "flickability" of the machine when changing directions rapidly on tight trails.
Fuel System: Carburetor
The RM 250 uses a high-performance carburetor. While less technologically advanced than FI, it is preferred in the Nepalese race scene for its "tune-ability" and the ability to be easily serviced in the field without diagnostic electronics.
Top Speed: 125 km/h
The RM 250 has a top speed of 125 km/h. Its gearing is focused on acceleration and low-end torque ("Race" spec) rather than top-end speed, making it a weapon on dirt rather than a highway cruiser.
Mileage: 25 kmpl
The average mileage is roughly 25-30 kmpl. For a race-tuned 250cc engine, this efficiency is secondary to its ability to provide instant power under load.
