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81 KZ440 Seats Interchangable? 15 Jul 2021 12:44 #851794

  • SteveKing84
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Are the seats between the A, B, C and D variations compatible across the board?  I have a 81 440 A, but would really love to change to a B or C seat.  Looking at photos of the different models, it looks like maybe I can get away with installing a B seat without changing the rear end, whereas I would def need new parts changing to a C seat.  Anybody in the know on this subject?

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81 KZ440 Seats Interchangable? 15 Jul 2021 13:32 #851798

  • Nerdy
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The LTD models have different frames: there is a dip in the cruiser frames (under the seat) that is not present in the kz440B frame.

440B frame:



440A frame (1980 because Partzilla doesn't have a pic for the '81 440A):





Partzilla is a great place to look if you're wondering about parts compatibility.

Also you can keep your existing seat pan, remove the cover, and use a bread knife to trim the seat foam into the shape you want. You may need to have a custom cover made, though, or if you're lucky you can find a generic seat cover that will work.
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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Last edit: by Nerdy.

81 KZ440 Seats Interchangable? 15 Jul 2021 14:20 #851800

  • SteveKing84
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Dang, thanks.  Didn't think to check for frame differences, it all looked cosmetically different to me.

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