Engine (complete) | 2005β2006 RM-Z250, 2004β2005 KX250F | Direct swap; same cases and internals |
Cylinder Head | 2005β2006 RM-Z250, 2004β2005 KX250F | Same valve layout and mounting |
Carburetor (Keihin FCR) | 2005β2006 RM-Z250, 2004β2005 KX250F | 37mm FCR; interchangeable, check jetting |
CDI/ECU | 2005β2006 RM-Z250 | Slight ignition curve differences |
Frame | 2005β2006 RM-Z250 | Direct fit; not shared with KX250F |
Radiators | 2005β2006 RM-Z250, 2004β2005 KX250F | Same size and mounting |
Front Forks (KYB) | 2005β2006 RM-Z250, 2004β2005 KX250F | 47mm KYB twin-chamber forks; bolt-on |
Triple Clamps | 2005β2006 RM-Z250, 2004β2005 KX250F | Same offset and spacing |
Rear Shock | 2005β2006 RM-Z250, 2004β2005 KX250F | KYB unit; interchangeable with proper linkage ratio |
Swingarm | 2005β2006 RM-Z250 | Direct fit; KX250F may differ slightly in shock mount |
Subframe | 2005β2006 RM-Z250 | Direct fit |
Exhaust Header | 2005β2006 RM-Z250, 2004β2005 KX250F | Same bend and mounting; can swap |
Silencer / Muffler | 2005β2006 RM-Z250, 2004β2005 KX250F | Match header diameter for best fit |
Fuel Tank | 2005β2006 RM-Z250 | Direct fit |
Seat | 2005β2006 RM-Z250 | Direct fit |
Plastics (shrouds, fenders, number plates) | 2005β2006 RM-Z250 | Interchangeable; not KX250F |
Wheels (front & rear) | 2005β2006 RM-Z250, 2004β2005 KX250F | Same axle sizes, hub spacing |
Brakes (caliper/rotor/master) | 2005β2006 RM-Z250, 2004β2005 KX250F | Interchangeable (Nissin parts) |