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 […]

$1,500 HOP-UP FOR HARLEY TWIN CAMS

03-09HopUpDyno

The owner of this 2009 CVO 110″ wanted the same things as thousands of other Twin Cam owners, be they 88s, 96s, 103s, or 110s: a better exhaust note, smoother idle, no popping on deceleration, better off-the-line power, and, you guessed it, more power across the board, not only at a high rpm. That’s a […]

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 […]

VIDEOSTIK MOTORCYCLE TOOL

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Ever need to look inside a gas tank to see if there’s rust or sandblast material in there? What about looking inside the engine through the spark plug hole to find out if the cylinder walls are marred? With the VideoStik from VOscope you can do all that, as well as inspect the bore of […]