I'm wanting to know if it's the same length and width as an nc29 piston pin. Thanks

Interested in this as well, I'd like to know if nc29 pistons fit a nc23 motor. I have a real old duck 86 nc23 areo with adjustable rockers. My pins 13.97mm I can measure the width in a few days

CBR400RR-K 1989 piston pin
length 42.80mm

external width 13.99

internal width 8.59mm


i have amended the photos, cos i is a nob

Your incorrect, you sure that's a nc23 1989 wrist pin?? It should be 14mm ish that's what the Haynes manual says? And it covers 89. I'm pretty sure newer pistons will fit my 86?? My pins without a doubt 13.97mm I'd, and 42.80mm long, at least agree on length lol!! If you have a nc23 piston lying a round I bet you'll find about a 1mm play with that pin you have pictured?

Here is the piston I'm thinking of buying? Is it any good? Anyway they sent this picture showing the seize, of the piston pin, bore, they are very helpful. I'm pretty sure that 12.60mm pin you have, must be from another model bike?

This is the listing: hope they work, decant price:

Honda CB400 CBR400RR CB-1 NC23 NC29 STD Bore Size 55mm #151982245581

hello 04colyzq8

SORRY ,

i have corrected the above pictures ,cos i is a nob.

sorry for any confusion i have caused

LITTLE=ONE wrote:hello 04colyzq8

SORRY ,

i have corrected the above pictures ,cos i is a nob.

sorry for any confusion i have caused

No worries man, it happens. Just curious though how did it read incorrectly? I want to get a digital veneer, I currently use a mic in inches, then convert:(