TOPIC:

I am looking for an air filter box (part 11012-1103 - the box behind the air filter) for my 1981 KZ305. Can anyone here offer one for sale to me? Alternatively, can some one that owns one of these bikes (see below list of compatible models) kindly measure the one on their bike (ESPECIALLY the size of the section with the hole where the air enters at the far end of the box) and pass it on to me so I can try to fabricate one? I sure would appreciate it. This box is critical for the tuning and performance of these bikes. I've attached images of the part to this message. Thanks! Bob
11012-1103 air cleaner housing fits:
1980 KZ250-D1 KZ250 AIR CLEANER ('80 D1)
1980 KZ250-D1 KZ250 AIR CLEANER ('81 D2)
1981 KZ250-D2 CSR AIR CLEANER ('80 D1)
1981 KZ250-D2 CSR AIR CLEANER ('81 D2)
1981 KZ305-A1 CSR AIR CLEANER
1982 KZ250-L1 CSR Belt AIR CLEANER
1982 KZ305-A2 CSR AIR CLEANER
1982 KZ305-B1 CSR Belt AIR CLEANER
1987 KZ305-B2 LTD AIR CLEANER








1988 KZ305-B3 LTD AIR CLEANER

The far end is 1.5" x1.5" exactly, one corner is rounded. The diagonal to the rounded corner is 1.75". All measured to within 1/64 of an inch. All are inner dimensions. Let me know what else you need. Good luck

I have one you can have, I'm in NZ so there will be a bit of shipping to pay...

Great! You're very kind! I just joined this site/forum. What a great community! Please kindly check the mailing costs and let me know.....slow (cheap) shipping and fast shipping, if those are options. I am in the USA, postal zip code 19606. I would like to call you, if that's possible. You can also contact me at bobnatalini at yah_ _

You can PM me through this forum. I get a lot of help and advice so just keeping the wheels turning. And I know how hard it is to get parts for these little bikes.

drawing

I got a postage price of $15 NZD and I think the box was 4 bucks. Let's call it 20 bucks US and I'll package it up and send it if you still want it.

Hi Rustyhama. Yes, great! I want it. Please tell me how to send payment. I'll send you a private message with me address,
Bob

Hi Rustyhamma. Did you get my reply messages and/or see my reply post here? i am awfully anxious to get the Air Filter Box we agreed on. I have not been able find one anywhere else so this one you offered it super important to me. Please send me a message with instructions on how to send you payment. Thanks, Bob

Hi Bob, I've emailed you at the address above. Let me know if you don't get it.

Hi Bob, did the air filter box arrive and has it got your bike on the road yet?

For anyone else who needs one of these air boxes, I am looking into getting a 3D model printed. I figured, based on the measurements given in another topic on this forum, that the intake opening size is 2 square inches. I have previously built a box with sheet metal, but it was a pretty terrible design. In building it, I was able to see what worked and what didn't, so I've used that understanding in combination with the measurements of the original air filter and the pictures of the original air filter box to create a 3D model that should work great as a replacement. I'm waiting to get a quote back for the 3D printing. Hopefully, it won't cost much. The only problem with the design is that, to save money by cutting back on materials, I've made the box a lot smaller than the original, so it will need a metal bracket to attach between the two bolts in the front and the one bolt in the back. The bracket will be necessary to keep a downward pressure on the box so that it will hold tight against the front air box. I'll post more information once I get a quote for the printing. I'll also come up with a simple design for the bracket.