2014 Honda CRF250R
General Specifications
| Model | Honda CRF250R |
| Year | 2014 |
| Category | Motocross / Competition |
| Engine Type | Liquid-cooled, four-stroke, single-cylinder, SOHC Unicam, four valves |
| Weight | 104.8 kg kerb weight (231 lb, US specification); 105.7 kg European specification |
Engine
| Displacement | 249.4 cc |
| Bore x Stroke | 76.8 x 53.8 mm |
| Compression Ratio | 13.5:1 |
| Fuel System | Honda Dual-Timing PGM-FI electronic fuel injection, 46 mm throttle body, 12-hole injector and revised injection timing |
| Ignition | ECM-controlled full-transistor ignition with electronic advance |
| Spark Plug | NGK R0451B-8 |
| Spark Plug Gap | 0.6–0.7 mm (0.024–0.028 in) |
| Cooling System | Liquid-cooled, twin radiators mounted lower in the chassis |
| Starting System | Kickstarter |
Transmission
| Transmission | 5-speed close-ratio manual, constant mesh, revised for 2014 |
| Clutch | Wet multi-plate, cable operated |
| Final Drive | 520 chain, 13-tooth front / 49-tooth rear sprocket |
Dimensions
| Overall Length | 2,181 mm |
| Overall Width | 827 mm |
| Overall Height | 1,271 mm |
| Wheelbase | 1,489 mm (58.6 in) |
| Ground Clearance | 322 mm (12.7 in) |
| Seat Height | 951 mm (37.4 in) |
| Fuel Capacity | 6.3 litres (1.66 US gallons) |
Chassis
| Frame | New-generation aluminium twin-spar frame with mass-centralised design, lightweight aluminium subframe and Honda Progressive Steering Damper (HPSD) |
| Front Tyre | 80/100-21, Dunlop Geomax MX51FA original equipment | Tyre Size Guide |
| Rear Tyre | 100/90-19, Dunlop Geomax MX51 original equipment | Tyre Size Guide |
Suspension
| Front Suspension | 48 mm inverted Showa twin-chamber cartridge fork, 16-position compression and 16-position rebound damping adjustment | Fork Oil Levels |
| Front Suspension Travel | 310 mm (12.2 in) |
| Rear Suspension | Honda Pro-Link Showa single shock, adjustable spring preload, 17-position rebound damping, 13-position low-speed compression and 3.5-turn high-speed compression adjustment |
| Rear Suspension Travel | 312 mm (12.3 in) |
| Fork Oil | Honda HP Fork Oil SS-19. Standard outer-chamber capacity: 357 ml per fork leg with standard 4.59 N/mm fork spring; adjustable range 300–384 ml. Optional 4.40 N/mm spring: 354 ml standard, range 298–381 ml. Optional 4.80 N/mm spring: 350 ml standard, range 294–377 ml. Quantities are for the fork outer chamber and do not replace the separate damper-chamber filling and bleeding procedure. |
Brakes & Wheels
| Front Brake | Single 240 mm hydraulic disc, twin-piston caliper |
| Rear Brake | Single 240 mm hydraulic disc |
| Front Wheel Size | 21-inch aluminium spoked wheel |
| Rear Wheel Size | 19-inch aluminium spoked wheel |
Service Data
| Fuel Type | Unleaded petrol, minimum 91 PON / approximately 95 RON |
| Premix Information | Not applicable — four-stroke engine with separate engine and transmission lubrication systems |
| Gearbox Oil | Honda GN4 SAE 10W-30 four-stroke motorcycle oil or equivalent meeting API SG or higher and JASO MA, without energy-conserving friction modifiers. Capacity: 0.68 litres after draining; 0.75 litres after engine disassembly. Transmission lubrication is separate from engine lubrication. |
| Air Filter | Washable, reusable oiled foam air filter element in redesigned 2014 airbox |
| Service Notes | Competition-use motorcycle requiring frequent maintenance. Engine oil capacity: 0.67 litres after draining, 0.69 litres with oil filter replacement and 0.85 litres after disassembly. Transmission oil must be changed separately. Cold valve clearance: intake 0.12 ± 0.03 mm; exhaust 0.28 ± 0.03 mm. Idle speed: 2,000 ± 100 rpm. Cooling system capacity approximately 0.95 litres after draining. Spark plug has precious-metal electrodes; inspect using a wire-type gap gauge and replace if outside specification rather than bending the electrodes. Regularly inspect the piston, valves, cam chain, fuel-injection components, air filter, drive chain, wheel bearings and suspension linkage. Maintain the twin-chamber fork using the specified oil quantities and damper bleeding procedure. Refer to the 2014 Honda CRF250R Owner's Manual and Competition Handbook for maintenance intervals and service procedures. |
2014 Honda CRF250R – A New Generation with Twin Exhausts and Dual-Timing Fuel Injection
The 2014 Honda CRF250R marked one of the most significant redesigns in the history of Honda's 250 cc four-stroke motocross machine. After several years of refining the fuel-injected platform introduced in 2010, Honda launched a substantially new motorcycle featuring a redesigned aluminium frame, extensively revised Unicam engine, new fuel-injection technology and a distinctive twin-muffler exhaust system. It represented a new generation rather than the incremental improvements seen on the 2011, 2012 and 2013 models.
Much of the inspiration came from the redesigned CRF450R, which had introduced Honda's latest mass-centralisation philosophy for the previous model year. Honda engineers wanted the smaller CRF250R to feel lighter and more agile during cornering, jumping and rapid direction changes. The new aluminium twin-spar frame was designed around a lower centre of gravity, with major components positioned
