Vehicle Segment:
High-performance Off-Road Competition / Enduro
Target Audience:
Riders seeking to maintain and repair their KTM EXC/XC-W Six Days motorcycles, from amateur to professional racers
Key Competitors:
Husqvarna TE, Beta RR, Yamaha WR, Honda CRF-X, Sherco SE
Manual Advantage:
Comprehensive coverage for multiple engine displacements and model years within a single manual
Digital Convenience:
Instant download provides immediate access to essential service information
Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly procedures
Fuel System:
Carburetor (for specific variants) or Fuel Injection (EFI) system, fuel pump, injectors, fuel pressure regulation
Ignition System:
CDI unit, ignition coil, spark plug diagnosis, timing
Cooling System:
Radiator, coolant hoses, water pump, thermostat, fan operation
Transmission And Clutch:
Clutch operation, disassembly, assembly, transmission gear inspection, repair, shift mechanism
Suspension Front:
WP Suspension fork service, seal replacement, oil levels, damping adjustments
Suspension Rear:
WP Monoshock service, linkage lubrication, shock absorber repair, spring preload adjustment
Braking System:
Brake caliper service, master cylinders, brake fluid bleeding, pad replacement, disc inspection
Electrical System:
Wiring diagrams, battery maintenance, starter motor, lighting system, ECU diagnosis (if applicable)
Chassis And Frame:
Frame inspection, subframe, swingarm service, bearing checks
Exhaust System:
Exhaust pipe and muffler inspection, maintenance
Wheels And Tires:
Spoke tension adjustment, wheel bearing service, tire mounting and balancing
Preventative Maintenance:
Detailed schedules and procedures for oil changes, filter replacements, chain maintenance
Troubleshooting Guides:
Systematic diagnostic procedures for common malfunctions and error codes
Component Rebuilding:
Step-by-step instructions for rebuilding engine components, suspension, and brake systems
Technical Specifications Data:
Torque values, clearances, fluid capacities, electrical specifications
Wiring Diagrams:
Complete electrical system schematics for troubleshooting and repairs
Special Tools:
Identification and usage of KTM-specific or recommended tools for various procedures
Diagnostic Capabilities:
Advanced diagnostic procedures for engine management and electrical systems
Repair Complexity:
Suitable for DIY enthusiasts to professional mechanics, covering routine maintenance to complete engine rebuilds
Engine Type:
4-stroke, Liquid-cooled, Single Cylinder (LC4 engine architecture)
Bore X Stroke 400:
Approx. 86 mm x 70 mm
Bore X Stroke 450:
Approx. 95 mm x 71.2 mm
Bore X Stroke 530:
Approx. 95 mm x 76.5 mm
Valvetrain:
SOHC, 4 valves per cylinder
Lubrication:
Integrated engine and transmission oil lubrication system
Horsepower Estimated 400:
Approx. 50-55 hp
Horsepower Estimated 450:
Approx. 55-60 hp
Horsepower Estimated 530:
Approx. 60-65 hp
Torque Characteristics:
Strong mid-range and top-end power delivery suitable for competition
Fuel Delivery 400 450:
Mikuni BSR 40 (carburetor) or Keihin FCR-MX (specific models/years) / EFI for later models
Fuel Delivery 530:
Keihin FCR-MX 41mm (carburetor) or EFI
Fuel Type:
Unleaded Gasoline (95 RON / 91 AKI recommended)
Crash Safety:
N/A (Off-road competition vehicle, not subjected to automotive safety ratings)
Brakes:
Hydraulic disc brakes, front and rear (Brembo components common)
Off Road Controls:
Handlebar controls for engine kill, lights, and starter
Frame Protection:
Integrated frame guards and skid plates
Engine Oil Change:
Every 15-25 operating hours or annually, whichever comes first. Refer to manual for exact specification.
Air Filter Cleaning:
After every few rides, or more frequently in dusty conditions.
Spark Plug Replacement:
Check every 25-50 operating hours, replace as needed.
Valve Clearance Check:
Every 50-100 operating hours, depending on usage.
Engine Oil Type:
SAE 10W-50, API SJ/SL/SM, JASO MA (e.g., Motorex Power Synt 4T 10W/50)
Engine Oil Capacity:
Approx. 1.1 Liters (refer to manual for specific variant)
Coolant Type:
Ethylene glycol based coolant, pre-mixed 50/50 with distilled water
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid
Common Wear Items:
Clutch plates, wheel bearings, steering head bearings, fork seals, chain and sprockets
Potential Maintenance Concerns:
Regular maintenance is critical due to high-performance nature. Overheating can occur with extreme use if cooling system is not maintained.
Ktm Focus:
KTM is renowned for its off-road racing heritage, particularly in motocross, enduro, and rally raid.
Exc Lineage:
The EXC line represents KTM's commitment to competitive off-road riding, evolving from the legendary LC4 platform.
Xc-W Distinction:
XC-W (Cross-Country-Win) models are typically homologated for street legality in some markets, often featuring lights and mirrors, while EXC is more race-focused.
Six Days Editions:
Six Days editions are special, limited-run versions celebrating the International Six Days Enduro (ISDE), often featuring upgraded components and unique graphics.
Manufacturing Location:
Primarily Austria (Mattighofen)
