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Can any one tell me who makes the filters for the sparks kit and for the pro design kit are they both made by uni they both look like a uni
 

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sparks is made by sparks racing and pro design is made by pro design



i dono
 

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The stock Honda filter is very good. I wouldn't bother replacing it myself.

In fact, it flows well enough that a 12:1, 500cc, FCR carbed, full piped, HRC cammed, open airboxed setup didn't show any performance or jetting difference even when an outerwears was installed (on the dyno with a realtime wideband AFR meter), indicating that, even that combo still flowed well enough to feed the setup....

It also did not indicate any flow restriction at high RPMs which would have showed up as the mixture going rich at the high RPM side of the power curve.
 

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DT1 is the name of the company that makes sparks filters, well I'm almost positive anyways.
 
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