K&N’s “RK Series” Filter Kit includes everything needed for the ultimate “High Flow” upgrade. The kit comes complete with the oversized filter, a matching free-flow backing plate and integral breather kit.

The RK Series Filter Kit also includes a built-in and dyno-tuned velocity stack, eliminating the need for any external breathers.

Why should your customers go shopping elsewhere for the backing plate and breather connections to go with that High-Flow Air Filter when they can get the complete package from K&N? Make sure and show them the RK Series Filter Kit.

&N is a household name. Okay, a shophold name. Either way, those K&N High-Flow Air Filters are just about the first thing many riders add to their new bikes the minute they get them home. It’s a good move. A stock motorcycle, especially a Twin Cam Harley–either the injected or carbureted versions–is severely plugged up on the intake side. That high-density OE filter element and the enclosed filter body holding it combine to really choke off the airflow. A quick and simple switch to a free-flowing K&N High-Flow Filter Element coupled with a less-restrictive backing plate makes a huge difference and it’s something immediately noticeable. With the engine now breathing to its full potential the net result is a bike that’s more responsive overall and definitely a lot more fun to ride.
     But when you’re making that change and rounding up everything needed here why stop at just the filter element from K&N? K&N has everything you need to get this very-necessary job done, so before searching the aftermarket for that open backing plate you need and a breather kit to go with it check out the K&N “RK Series” Filter/Backing Plate Kit. Everything needed is right here, the oversized filter, a matching free-flow backing plate and integral breather kit, and this time it’s all coming from K&N, the same company making the High-Flow filter element you’re using and the one company that knows what it takes to maximize airflow. With a K&N “RK Series” Filter/Backing Plate Kit you’re not grabbing one part from here, another from somewhere else. K&N has put everything you need together in one package, combining an open-style backing plate, the breather connections and that High-Flow Filter Element into one neat package. It just makes sense to do it this way, and it makes sense dollar-wise, too. The price of that K&N Filter/Backing Plate/Breather Kit generally works out to be significantly less expensive than if you were to buy the High-Flow Filter itself and then go shopping elsewhere for the backing plate and breather connections.
     There’s more than just that friendly price here, too. An RK Series Filter Kit is designed to be the perfect match for the High-Flow Filter Element it mounts. There’s even a built-in and dyno tuned velocity stack that’s part of the design, and it’s there for a reason. Coming from K&N you know that mini-stack increases the airflow. And this K&N Backing Plate looks good. It’s constructed entirely of powder-coated billet aluminum, and with that built-in velocity stack it neatly eliminates the need for any external breathers. This is a total intake system and it’s built to work. There are decades worth of K&N airflow know-how here to get the absolute most from that K&N High-Flow Filter Element you’d buy anyway.
     The RK Series Filter Kit is easy to install, even retaining the stock air-cleaner cover. K&N includes a laser etched “High Flow” center ring to dress things up if you want, but of course you can keep the stock Harley part there if you choose. The RK Series Filter Kits are available for all ‘99 through ‘06 Twin Cam Harleys (with the exception of the older Magnetti-Morelli FI models) and Drag Specialties has them in stock now. It’s one-stop High-Flow shopping, and it’s all from K&N. What could be better, or easier? Check it out. You won’t be disappointed.