Compression Ignition Addict
Join Date: Apr 2012
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From what I read they are actually to help direct airflow to cool the brakes, not to keep out dirt.
Edit - and yes, I did some reading over on pirate 4x4 and it seems that a lot of those guys leave them off.
'97 CCSB f-250 4x4 auto, 6pos chip w/ canned tunes, AFE intake, 4 in exhaust, 3in dp, 3.55 gears,
Dana 60 rebuilt and waiting to be installed