http://www.ebay.com/itm/38039043345...NX:IT&_trksid=p3984.m1439.l2649#ht_3318wt_956 I purchased these on ebay. I removed the existing plastic vents but the carbon fibre ones dont seem to nearly fit as snug as the plastic ones. Seems to be a mm off here and there. I used gasket silicon as it has the highest heat resistance out of all the silicons. I left it for 2 days to dry and set and the damn thing flew off in a local ride to the shops and back. Any suggestions? Maybe put them inside the plastic so it fits snug? Another silicon or glue?