aFe Magnum FLOW OE Replacement Air Filter w/ Pro DRY S Media (31-10302) 25215 The Trail Edition is a

The Trail Edition is a 3" straight-through Cat Back configuration featuring a bespoke mid pipe resonator

Produces a ripping high pitch exotic sports car sound- better than Titanium while being 100 times more durable

4 in² front

What sets the 340 Stealth Pump apart is its superior flow throughout a wide pressure range

Never skimp when it comes to your BMW

aFe Magnum FLOW OE Replacement Air Filter w/ Pro DRY S Media (31-10302) 25215 The Trail Edition is aThis filter features three layers of oil free synthetic media and requires no oil during maintenance to provide maximum convenience. Its progressive layering provides great filtration efficiency and dust holding capacity. This media is best suited for street use. Pro DRY S filters are easily recharged with aFe's POWER CLEANER. Click here for more information about our filter media. Rounded Deep Open Pleats: aFe POWER performance air filters use a