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Motorcycle diaphragm valves
Benelli 491 50 ST AC 2003
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€6.27
Lowest price from 30 days before discount: €6.60
Athena intake valve diaphragm - P400480130002
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I have attached a photo of the factory reed next to the reed I installed.There is a difference in the size of the intake so that more air enters and I have more compression.With the first start the difference was immediately apparent having a 17.5mm carburetor.When I put 21mm it will be even better. The compression is higher and it works very fast.
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These baffles are as I wanted them, thin to achieve quick reset and sealing of the intake resulting in better cylinder filling. Very good product.
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Leaves ok, in my case, unfortunately, minimally stand off.
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