Air box stay on 1976 KZ 900

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Air box stay on 1976 KZ 900

23 Mar 2026 09:17 - 23 Mar 2026 09:28
#922500
1976 KZ 900 A4

Previous owner removed airbox and installed air filtration pods. I purchased an airbox that I'll install soon. I plan on using g K&N RU-2600 filter in place of silencer. I also have to find an airbox stay.
Question: Does the back of the airbox just sit on top of the stay or is it somehow attached? Does the stay attach to frame utilizing the same bolts that hold the battery box ( hard to tell from Kawasaki.com parts diagram)? Has anyone fabricated an airbox stay?
Has anyone purchased parts from PowerSportsEast out of Bear Delaware?
Thanks 
 
Last edit: 23 Mar 2026 09:28 by Tjpgi. Reason: Additional text

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  • KZQ
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Re: Air box stay on 1976 KZ 900

24 Mar 2026 19:25 - 24 Mar 2026 21:04
#922511
Tjpgi post=922500 userid=194961976 KZ 900 A4

Previous owner removed airbox and installed air filtration pods. I purchased an airbox that I'll install soon. I plan on using g K&N RU-2600 filter in place of silencer. I also have to find an airbox stay.
Question: Does the back of the airbox just sit on top of the stay or is it somehow attached? Does the stay attach to frame utilizing the same bolts that hold the battery box ( hard to tell from Kawasaki.com parts diagram)? Has anyone fabricated an airbox stay?
Has anyone purchased parts from PowerSportsEast out of Bear Delaware?
Thanks 



 
I took a look couldn't identify it. PartZilla had the drawing. Part Number 22.
 
Now I'll look again.
Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Honda Valkyrie, 2009 Yamaha Roadliner S. 1983 Honda GL 1100
Projects:
1985 ZN1300
Last edit: 24 Mar 2026 21:04 by KZQ.

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Re: Air box stay on 1976 KZ 900

24 Mar 2026 20:57 - 24 Mar 2026 21:04
#922512
ebay.com/itm/327020039344

The pictures do not show both sides clearly, but it does not look too difficult to fabricate if you had to make one. I see the flat bracket with mount holes welded to a shallow "U" bracket that must just support the back of the air box. 
 
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 24 Mar 2026 21:04 by Injected. Reason: more info

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Re: Air box stay on 1976 KZ 900

24 Mar 2026 21:06 - 24 Mar 2026 21:07
#922513
Later:
The air box is supported by the stay. There doesn't appear to be any bolted connection. On the other end the stay is bolted to an angle that is spot welded to the front of the battery box.That angle is supported on a larger angle that spans the frame. Each of these three layers are separated from the others by rubber cushions. The total stack height will affect the support of the air box.
Hope that helps.
Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Honda Valkyrie, 2009 Yamaha Roadliner S. 1983 Honda GL 1100
Projects:
1985 ZN1300
Last edit: 24 Mar 2026 21:07 by KZQ.

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  • Tjpgi
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Re: Air box stay on 1976 KZ 900

25 Mar 2026 06:45
#922520
Thanks for your follow up. Kawasaki.com has parts diagrams for multiple systems on their bikes similar to this one. I couldn't tell if there was and attachment from the airbox to the stay. I found info on "search" that the airbox just sits on top of the stay to relieve stress on the airbox boots.

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Re: Air box stay on 1976 KZ 900

25 Mar 2026 08:24
#922524
since it's a kz900 and not a 650csr. ha ha. in case you aren't aware. there are several airbox stays on ebaayy. 
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Re: Air box stay on 1976 KZ 900

02 Apr 2026 18:10
#922722
I was able to purchase a new airbox stay on Ebay for $19 plus $6 shipping. The stay attaches on top of the battery box grommets. The stay "springs" a little so the airbox is held in place at the rear with friction. It's nice to be restoring this 76 KZ to stock.

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