ENGINE/DRIVETRAIN
Powerful four-stroke 249cc liquid-cooled four-valve Unicam® engine is designed to produce power across a wide rpm band for easy-to-control operation
Electric starter drives the clutch side of the crankshaft to provide superior lubrication to starter gears, and produce a narrow engine with a short, strong crankshaft
Compact, lightweight engine assembly weighs only 27kg
ACG cover, clutch cover and cylinder-head cover are made of magnesium to reduce engine weight
Forged 12.9:1 compression slipper piston is lighter than a conventional design, revving quickly while maintaining excellent cylinder sealing and high-rpm power
37mm Keihin FCR-type carburettor features four rollers on the flat slide, resulting in light throttle effort, smooth operation, crisp throttle response and excellent rideability
Carburettor features a throttle position sensor (TPS) to help maintain linear throttle response throughout the rpm range
Twin-sump lubrication system separates the oil supply for the crankshaft, piston and valve train from the clutch and transmission. This ensures a cool supply of oil to the clutch, eliminates clutch and transmission material contamination of the engine oil, reduces the amount of circulating oil and permits the use of a smaller oil pump
Exhaust system uses a lightweight stainless steel exhaust header and muffler equipped with spark arrester
Dual radiators feature a refined core area for improved heat dissipation compared to conventional dual-radiator design, and coolant recovery tank
Gear-driven balancer reduces vibration and drives the water pump. Eight clutch plates provide the surface area necessary to handle the engine’s massive torque, while carefully matched clutch springs provide a light feel at the lever
T-ring–sealed chain is approximately 1.6mm narrower and is stronger compared to conventional chains
Durable five-speed wide-ratio transmission

CHASSIS/SUSPENSION
Fourth-generation Twin-Spar Aluminium Frame with forged-aluminium steering head
18-inch rear wheel features same lightweight rear hub and HRC works-type lightweight aluminium spoke nipples as used on the CRF250R
Front wheel features large-diameter front axle and wide wheel-bearing span for excellent rigidity
Rear-axle diameter of 25mm and large-diameter bearings provide optimum rigidity to withstand torturous off-road conditions
Revised, sophisticated Inverted Twin-Chamber Cartridge Fork
Pro-Link® Rear Suspension with new damper settings
Large 50mm rear shock damper piston diameter for consistent performance under demanding riding conditions
HRC works-type rear brake system integrates the rear master cylinder and fluid reservoir, eliminating the need for a separate reservoir and hose assembly

ADDITIONAL FEATURES
Rider ergonomics are optimized by adapting the handlebar, seat and footpeg height to place the rider’s legs at the narrowest frame width for improved comfort and handling feel
Wide, cleated stainless steel footpegs are self-cleaning, resist corrosion, provide excellent grip and fold for extra ground clearance
Aluminium Renthal handlebar (971 bend) is rubber-mounted to help reduce rider fatigue and improve comfort
Handlebar holders provide two different mounting positions to match rider preference
Works-type handlebar grips add to rider comfort
Adjustable front brake lever
Quick-adjust clutch
Chain guide material offers improved wear resistance, and service life is five times greater than conventional materials
Front disc brake cover helps protect rotor and calliper from damage
Removable rear subframe allows easy maintenance
Washable, two-stage foam air filter for optimal engine protection and easy maintenance
Comfortable, durable controls and high-quality fasteners
Stainless steel clutch cable for long life
Honda Racing™-inspired colours and graphics.