List of KDX Models, along with some model variation information: This information applies to USA models.
•KDX400-A1, first KDX model introduced
•KDX420-B1, KDX400 goes to KDX420
•KDX175-A3, last year for KDX175
•KDX450-A1, KDX420 goes to KDX450, last year for KDX400/420/450
•KDX200-A1, first year for KDX200
•KDX250-B4 , last year for the air-cooled KDX250
•KDX200-C1, front disc brake, power valve engine, 43mm conventional forks
•KDX80-C5, last year for the KDX80
•KDX200-C3, available with lime green frame and lime green plastic or silver frame and white plastic, last year for air cooled full sized KDX
•KDX200-E1, heavily redesigned with liquid cooled engine, rear disc brake, different frame, improved suspension, etc.
•KDX200-E2, available with lime green frame and plastic or sky blue frame and white plastic
•KDX200-E3, last year for KDX200 available with lime green frame and plastic or sky blue frame and white plastic
•KDX250-D1, KDX250 reintroduced with perimeter frame, liquid cooled engine, USD forks, rear disc brake, etc.
•KDX200-E4, last year for full sized KDX with damping rod forks
•KDX200-E5, KDX200 receives upside down (USD) forks, 41mm inner tubes
•KDX250-D3, change to full floater front disc rotor
•KDX250-D4, last year for KDX250
•KDX200-H1, KDX200 totally redesigned with perimeter frame, conventional forks, engine, brakes, shock, etc.
•KDX200-H2, various parts in violet (purple)
•KDX220-A4, KDX220R released, almost entirely the same as KDX200, engine bore size larger, o-ring chain