In keeping with the revolutionary CRF450R and CRF250R, Honda's new CRF150R and CRF150R-Expert four-stroke motocross machines are destined to redefine the small-displacement motocross category.

Engine/Drivetrain

- Powerful four-stroke 149cc liquid-cooled four-valve Unicam® engine produces impressive power across a wide rpm range for easy-to-control operation.

- Lightweight, compact, internal auto decompression and handlebar-mounted hot-start system provide easy starting, hot or cold.

- Compact, lightweight engine assembly weighs only 43.6 pounds.

- Unicam valve train provides the light weight of a compact single-cam drive and the optimum combustion chamber shape for maximum power at all engine rpm.

- Unicam valve train features a carburized single camshaft that directly actuates two 26mm steel intake valves. The steel 22.5mm exhaust valves are actuated by twin, low-friction rocker arms.

- Crankshaft is made of high-strength, low-carbon steel with carburized main journals for maximum durability at sustained high-rpm
operation.

- Forged 11.7:1-compression slipper piston and rings are lighter than a conventional design, revving quickly while maintaining excellent cylinder sealing and high-rpm power.

- Double-carburized connecting rod utilizes a big-end needle bearing for maximum high-rpm performance and durability.

- Nikasil cylinder lining is lightweight and provides cooler operation for extended engine life.

- Press-fitted aluminum spark plug pipe fits between the two exhaust rocker arms, further contributing to compact cylinder-head design.

- 32mm Keihin FCR carburetor features four rollers on the flat slide, resulting in very light throttle effort, smooth operation, crisp throttle response and excellent rideability.

- Carburetor features a throttle position sensor (TPS) that helps maintain a linear throttle response throughout the 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 potential clutch and transmission material contamination of the engine oil, reduces the amount of circulating oil and permits the use of a smaller oil pump.

- Vertically split crankcases feature a built-in oil pump, reducing weight compared to a conventional design.

- Exhaust system uses a lightweight stainless exhaust header and repackable aluminum muffler.

- Dual radiators feature a refined core area for improved heat dissipation compared to conventional dual-radiator design.

- Gear-driven balancer reduces vibration and drives the water pump. A six-disc clutch provides the surface area necessary to handle the engine's impressive torque, while carefully matched clutch springs provide a light feel at the lever.

- Durable close-ratio five-speed transmission.

Chassis/Suspension

- Front and rear suspension settings unique to the CRF®150R deliver ideal bump-absorption characteristics.

- All-new handlebar bend optimizes rider position and comfort.

- Lightweight, high-tensile steel frame with large-diameter frame tubing and cross-member provides excellent turning performance and straight-line tracking.

- Box-section aluminum swingarm is lightweight and rigid.

- Removable subframe is strong and durable.

- 37mm leading-axle inverted Showa cartridge front fork features friction-reducing design to improve compression and rebound control.

- The fork offers adjustable compression and rebound settings.

- Wide-section aluminum top and bottom triple-clamps position fork tubes far apart for good turning and control.

- Tapered-roller steering-head bearings for durability.

- Pro-Link® rear-suspension system features a fully adjustable Showa shock for superb compliance and wheel control.

- Strong, lightweight wheels are durable and minimize unsprung weight.

- Lightweight front and rear disc brakes with high-performance pads offer powerful, precise braking.

- Stout 15mm front and 17mm rear axles incorporate a surface-treatment for added strength and durability.

Additional Features

- Large-capacity airbox and reusable two-stage foam air filter.

- Lightweight plastic body components (radiator shroud, sidecovers, rear fender, seat base, fuel tank, front fender and front number plate) offer a slim, aggressive style.

- Seat-cushion foam follows the shape of the fuel tank, providing a smooth transition to increase rider mobility and comfort.

- Non-slip seat cover for increased rider control.

- High-quality Dunlop tires.

- HRC works-type rear-brake system integrates the rear master cylinder and fluid reservoir, eliminating the separate rear master-cylinder reservoir and hose.

- Adjustable front-brake lever and master-cylinder assembly are the same as CR®125R/CR250R components.

- Stainless-steel clutch cable for long life and improved feel and action.

- Works-type handlebar grips add to rider comfort.

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