Just picked up a couple machines for my son and I to start riding this year.
Anyone pick up one of those $12 plastic air filter adapters for the stock airbox? There are tons of them on eBay. I ordered the plastic adapter, K&N RU-3130 filter, and a filterwears pre-filter. All in for $54. Not a bad price to start a Big 3. Much cheaper than the $100+ aluminum ones in the O.P.
Also have a used set of Barker duals and a MSD tuner coming as well.
Wondering if there is any known negatives to the plastic adapters? Going to be running the stock box and stock lid for now. Clean>Power in my opinion. I'll wait and see how dirty my trails are and maybe I'll consider taking off the lid and get a Filterwears cover for the box.
'07 Raptor 700R
'05 Raptor 350