Category:
Motocross/Off-Road Competition Motorcycle
Target Audience:
Motocross racers and serious off-road enthusiasts
Competitors:
Yamaha YZ450F, Honda CRF450R, KTM 450 SX-F
Engine:
450cc liquid-cooled, DOHC, four-valve, single-cylinder engine with fuel injection.
Chassis:
Lightweight aluminum perimeter frame, advanced suspension components.
Technology:
Digital fuel injection, electric start (on some models/variants, though the 2010 KX450F does not feature electric start), adjustable suspension.
Engine:
Full engine component breakdown (cylinder, piston, crankshaft, valve train, lubrication, cooling, fuel injection)
Drivetrain:
Clutch, transmission gears, shift drum, shift forks, final drive components (sprocket, chain)
Chassis:
Frame, sub-frame, swingarm, linkage system, steering components, footpegs
Suspension:
Front fork assembly (springs, dampers, seals), rear shock absorber assembly
Wheels And Brakes:
Front and rear wheels, hubs, spokes, tires, brake calipers, master cylinders, brake levers, brake pedals, rotors
Controls:
Handlebars, throttle assembly, clutch lever, brake levers, shift lever, kick starter (if applicable)
Electrical:
Ignition system components (CDI, ignition coil), lighting (headlight, taillight), battery, wiring harnesses, sensors (TPS, MAP)
Fuel System:
Fuel tank, fuel pump, fuel injector, throttle body, fuel filter
Exhaust System:
Exhaust pipe, muffler, heat shields
Bodywork:
Plastics (fenders, shrouds, side plates), seat, graphics
Identification:
Part number identification for all components
Assembly Disassembly:
Visual guidance for component assembly and disassembly through exploded views
Ordering Parts:
Facilitates accurate ordering of replacement parts
Troubleshooting Assistance:
Indirect assistance by identifying correct part configurations for diagnosis
Maintenance Planning:
Useful for planning replacement of wear items
Depth:
Comprehensive parts identification and illustration, suitable for parts sourcing and visual assembly reference.
Format:
Likely a printed document or a printable PDF. Specific file format not detailed in product description.
Quality:
Designed for clarity with exploded views, typically high-quality print for readability.
Binding:
Typically spiral-bound or saddle-stitched for ease of use during repairs.
Paper:
Durable paper stock to withstand workshop environments.
Engine Type:
4-stroke, single cylinder, DOHC, 4-valve
Bore X Stroke:
96.0 x 62.1 mm
Compression Ratio:
12.0:1
Valve Train:
DOHC, 4 valves
Lubrication:
Forced lubrication, wet sump
Peak Horsepower:
Estimated 54-56 HP (at crankshaft, varies by tuning and dyno)
Peak Torque:
Estimated 33-35 lb-ft (at crankshaft, varies by tuning and dyno)
Fuel Delivery:
Fuel Injection, Keihin FCR37 (flat slide carburetor with dual injectors)
Fuel Type:
Unleaded gasoline, 91-98 octane
Fuel Tank Capacity:
1.9 US gal (7.2 L)
Type:
5-speed constant mesh
Clutch:
Wet, multiple disc, manual
Gear Ratios:
1st: 2.467 (37/15), 2nd: 1.867 (28/15), 3rd: 1.500 (30/20), 4th: 1.250 (25/20), 5th: 1.050 (21/20)
Final Drive:
O-ring sealed chain; 16/48 (standard gearing, actual ratio may vary by market/spec)
Features:
Not applicable. This is a competition off-road motorcycle focused on performance, not comfort or infotainment.
Features:
Not applicable. No electronic driver assistance systems.
Features:
Not applicable.
Efi System:
Digital Fuel Injection system with dual injectors for precise fuel delivery and improved throttle response.
Ignition System:
Digital CDI with ignition timing optimized for engine performance.
Oil Change:
Every 10-15 hours of riding or as recommended by owner's manual based on conditions.
Air Filter Cleaning:
Clean after every few rides, especially in dusty conditions.
Spark Plug Inspection:
Inspect every 20 hours, replace as needed.
Valve Clearance Check:
Every 15-20 hours, adjust as necessary.
Engine Oil Type:
SAE 10W-40, API SG or higher, JASO MA certified motorcycle oil
Engine Oil Capacity:
1.1 US qt (1.05 L) without filter change; 1.2 US qt (1.1 L) with filter change.
Coolant Type:
High-quality ethylene glycol-based coolant with distilled water (50/50 mix)
Engine Longevity:
Like most high-performance motocross bikes, requires diligent maintenance for optimal longevity. Piston and ring wear are common with heavy use.
Suspension Maintenance:
Fork seals and shock seals can wear, requiring periodic replacement. Suspension servicing is critical for performance.
Clutch Wear:
Clutch plates can wear out with aggressive riding and frequent clutch use.
Manufacturer:
Kawasaki Heavy Industries Motorcycle & Engine Company
Motorsport Focus:
Longstanding involvement and success in professional motocross and supercross racing.
Kx Lineage:
The KX line has been a dominant force in motocross for decades, with continuous technological advancements.
2010 Updates:
The 2010 KX450F received significant updates including a new aluminum frame, revised suspension settings, improved engine tuning, and revised bodywork.
Manufacturing Location:
Japan (primary production)
