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)