Here are all the foams pre-oiled that will guarantee the best and longest life for your engines.
Reference 02UR0521-12
Brand: ULTIMATE
PRE-OILED FOAM AIR FILTER MUGEN MBX6/7/7R/8 (12 pcs) - UR0521-12
Reference 02UR0542-6
Brand: ULTIMATE
ULTIMATE AIRMAX AIR FILTER + 6 PRE-OILED FOAMS - UR0542-6