Airbox rubbers too short!

[yambabe]

Bah! After deciding to try and rebuild the jigsaw puzzle that was my airbox rather than put K&Ns on (at least for now) we have discovered that the rubbers don't actually reach the carbs when the box is in situ, and we can't get a seal.

The carbs are 50mm.

Some suggestions about what else has the same size carbs that we could look out for rubbers for would be useful please guys!

The bike is a Kawasaki ZL400, I'm told the engine is also in a GPZ400R, and may actually be a sleeved-down verion of a GPZ500 engine - although it would appear that the same engine appears yet again in my bike's big brother the ZL600 only presumably ported?
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Sod falling in love, I wanna fall in chocolate.

[Nath]

I had a similar problem on my 550, but solved it by changing the rubbers that go inbetween the carbs and engine inlet-manifold for some longer ones. Obviously if you don't have any suitable inlet manifold rubbers lying around then this doesn't actually help

Is it possible for you to make a little metal bracket so the airbox can be bolted slightly further forwards, or would bits of the frame get in the way?
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Hard livin', hard luck.