Target Audience:
KTM dealers, independent shops, and DIY owners servicing the 65 SX youth motocross bike
Purpose:
Identify correct factory part numbers for ordering replacement components
Key Advantage:
Official KTM part numbering ensures correct fitment the first time
Class Position:
65 SX competed in the 65cc mini class against Yamaha YZ65-class and Kawasaki KX65 machines
Exploded Diagrams:
Detailed exploded views for every assembly group
Part Numbers:
Complete factory part number listings with quantities per assembly
Systems Covered:
Engine, chassis, suspension, wheels, brakes, controls, bodywork, and hardware
Organization:
Grouped by assembly with exploded diagrams and part tables
Manual Type:
Replacement parts catalog (spare parts manual)
Delivery Method:
Instant digital download
Binding:
Digital (PDF document)
Page Count:
N/A - not specified for this edition
Cylinder and Piston:
Cylinder, piston, rings, pin, and small end bearing with part numbers
Crankshaft:
Crankshaft assembly, connecting rod, and main bearings
Ignition System:
Stator, rotor, CDI unit, and spark plug components
Cooling System:
Radiator, hoses, water pump, and impeller parts
Exhaust:
Expansion chamber, silencer, springs, and mounting hardware
Carburetor:
Mikuni carburetor jets, needle, float, and gasket sets
Front Suspension:
WP 35 mm upside-down fork legs, springs, seals, and clamp parts
Rear Suspension:
WP shock absorber, linkage bearings, and mounting hardware
Frame:
Frame, subframe, steering head bearings, and swingarm pivot parts
Wheels and Tires:
Rims, spokes, hubs, and axle components
Brakes:
Front and rear disc brake calipers, master cylinders, pads, and lines
Bodywork:
Fenders, number plate, radiator shrouds, seat, and side covers
Controls:
Handlebar, levers, throttle assembly, cables, and grips
Electrical:
Wiring harness, kill switch, and lighting connectors
Fasteners:
Complete hardware listings: bolts, nuts, washers, and circlips
Diagrams:
Numbered exploded views for each assembly group
Quantities:
Quantity required per assembly listed for every part
Parts Information:
Genuine KTM part numbers suitable for dealer or online ordering
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
Single-cylinder two-stroke, liquid-cooled
Bore and Stroke:
45 mm x 40.8 mm
Carburetor:
Mikuni VM carburetor
Ignition:
KTM digital CDI
Transmission:
6-speed gearbox, clutch actuated
Lubrication:
Premix (oil mixed with fuel)
Cooling:
Liquid cooling with radiator
Standard Transmission:
6-speed constant mesh gearbox
Optional Transmission:
N/A - single gearbox specification for this model
Clutch:
Wet multi-disc clutch, hand-operated
Shift Mechanism:
Foot-operated shifter
Service Parts:
Gear sets, shift forks, and clutch components covered in the parts manual
Audio System:
N/A - competition motorcycle, not equipped
Instrumentation:
N/A - no instrument cluster fitted
Assistance Systems:
N/A - pure competition machine with no electronic rider aids
Ignition Technology:
Digital CDI ignition for consistent spark delivery
Piston and Rings:
Inspect frequently; typical mini-class competition replacement at short intervals depending on use
Chain and Sprockets:
Clean, lube, and check tension before every ride
Air Filter:
Clean and oil after every ride in dusty conditions
Fork and Shock Oil:
Change regularly for competition use
Fuel:
Premix gasoline with 2-stroke oil at manufacturer-specified ratio
Coolant:
Water-based coolant suitable for aluminum radiators
Transmission Oil:
Manufacturer-specified 2-stroke gearbox oil
Common Wear Items:
Piston, rings, clutch plates, brake pads, chain, sprockets, and wheel bearings
Suspension Seals:
Fork seals are a frequent replacement on hard-used minis
Manufacturer:
KTM (Kronreif & Trunkenpolz Mattighofen), Austria
Background:
Austrian manufacturer with a long competition history in motocross and enduro
Model Lineage:
65 SX continued KTM's junior motocross line as a stepping stone between the 50 SX and full-size machines
2006 Model Year:
Water-cooled two-stroke with WP suspension, evolved from earlier 65 SX generations
Assembly:
KTM factory, Mattighofen, Austria
