K&N HARLEY AIR CLEANER: 1-HR TECH

11  The stock outer cleaner cover and insert, minus the rubber gasket, gets reinstalled using the stock bolts, some blue Loctite, and a 3/16" Allen. He torques the bolts to 36-60 in-lbs. AIM

Everyone knows K&N makes air filter elements that pass more air than the stock H-D ones do, which means more horsepower. But did you know that it also makes great air cleaner housings? Case in point is the made-in-the-US chrome beauty we bolt onto a rubber-mounted Sportster in the accompanying photos. Named simply the #RK-3929 […]

WIMMER’S TRIFLOW HARLEY AIR CLEANER: 1-HR TECH

WIM-01B

Ask anyone who knows what makes motors run, and he’ll tell you the name of the game is getting as much fuel over the piston as possible and burning it as completely as you can at just the right moment. How much fuel you can burn depends on how much air you can get flowing […]