HI guy

I"m owner for honda cbr 400 reg 92 on paper.I,m confuse with my bike on paper NC23E-1090***96.
engine and chasis no .My last week my bike breakdown and need the new engine.The mechanis says ,mine model is nc 29 not Nc 23 E. I,m trying looking for new Engine. Anyone Can help? Cheers.

Is the main frame spar a straight run from the headstock to the swingarm or does it have a bend in it?

What is the swingarm like? Is it bent on the right hand side?

Model, Code and Production Year - CBR400RR-K (1989)
Frame Numbers - NC23-1090001 to 1098116
Engine Numbers - NC23E-1090001 to 1098123
Carburettor Number - VG04B
Wheelbase - 1380mm
Overall length - 2202mm
Overall width - 675mm
Overall height - 1110mm
Ground clearance - 120mm
Weight (dry) - 182kg

Most notable difference is the frame:

NC23

NC29

hi,
Thk for info,frm ur guys. The main frame staright like the photo Nc 23 .Its nc 29 engine can fit to nc 23 model ? or part can mix wz nc 23 and nc 29 model etc camshaft,cylinder head and piston ? What is standard piston... its is 55 mm?