I came across a new supplier in Europe called Foxhole Fabrication Gmbh, they have created a more improved design for a 2.5" brake duct to fit NA/NB. The modified design alters the intake and brings it closer to the center of the rotor for more efficient cooling and reduced rotor cracking possibility.

To the extent we have 5 people interested, the price will be about 150Euro shipped. If we get 10, it will come down but not by much.

If interested, add your name on the list below and specify ABS or Non ABS plate versions. The non ABS is preferred for optimized air flow to the center. if you have spindles with a protrusion boss and not using or dont have ABS, you can grind off or mill off that boss.


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Couple of guys here (including me) have been using them for quite some time. Great product, can recommend. Currently using the 2.5" ABS ducts with 3" hoses, fed from an enlarged inlet in the GV lip. No problems so far. The non ABS version with the centered outlet should be even better.