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A customer in the UK sent us this great photo of a K&N filter in his Screamin' Eagle intake

Fit

Rich, from Wallace, California, hit the nail on the head when he told us that his new HD-0808 filter is a, “perfect fit for the Screamin’ Eagle intake. Great product as always!” Robert of Cape Coral, Florida, said that his E-3226 filter, “fit(s) better than the factory filter. Thanks again.” Obviously K&N’s engineers have done their homework on the replacement filters for the Screamin’ Eagle intakes.

Performance

Not only are the K&N filters a perfect fit for the SE intakes, but they offer up that legendary K&N performance. Dan, from Somerset, Pennsylvania, said his HD-0910 filter provides, “much better air intake and noticeable power when I pulled out of the garage. Well worth the expense, especially since it's lifetime.” Camron of Boone, North Carolina, says his HD-0910 filter, “works great; fits just as (well) as the original filter. Breathes a lot better, and sounds great.”

The tear-drop HD-0808 is a perfect fit for intakes using the Ventilator 29385-08

Richard of Jacksonville, Illinois, said, “These are good, high flow, cleanable air filters.” Dave M. said his new HD-0910 filter, “is so much better than the stock filter and easier to clean, thanks to K&N.” Clearly, both Richard and Dave appreciate the highly effective and fully washable cotton gauze filter media. K&N takes engine protection and ease of cleaning seriously.

Applications

So now that you have heard from actual Harley owners who have installed K&N replacement filters in their Screamin’ Eagle intakes, let’s take a look at the products for your application.

The K&N HD-0900 replacement filter will make your Sportster scream

This oval filter is a direct replacement for the Screamin' Eagle Ventilator 29670-09. This is an intake application that fits many 2008-2014 Harley FL and FX touring models. The HD-0910 filter showed an estimated filtration efficiency of well over 98% in K&N’s testing.

K&N HD-0818:

This is a round filter built to replace the Screamin' Eagle Ventilator 29244-08. The HD-0818 fits the SE intake for the 2016 and 2017 110 CI Harley-Davidson FLSS Softail with the Slim S intake. K&N’s testing resulted in an estimated overall filtration efficiency reading of over 98.5% with this filter.

K&N HD-0808:

This is the tear-drop shaped filter that replaces the Screamin' Eagle Ventilator 29385-08. The HD-0808 fits select 2008-2014 Dyna models. The K&N testing on this filter resulted in an impressive filtration estimate number of almost 99%.

K&N replacement filters for Screamin' Eagle intakes are pre-oiled and ready to install

If your Screamin' Eagle intake uses the Ventilator 29044-04B, this is your high-performance filter option. The HD-0900 fits many 2004-2014 Harley-Davidson Sportster 883 and 1200 models with the Screamin' Eagle upgrade. The filter has an estimated overall efficiency of over 98% and has a dirt holding capacity of an impressive 27 grams.

K&N HD-0600:

Select 2004-2014 EVO with early style RevTech® intakes with the top plate will use this replacement filter. It replaces the Screamin' Eagle Ventilator 29055-89 unit. H-D models with the late style RevTech intakes will use the E-4660.

K&N E-3224, E-3225, and E-3226:

The E-3224 replacement filter fits many Screamin' Eagle intakes with the "D" teardrop housing. The SE intakes with the standard teardrop housing will accommodate the E-3225. The E-3226 is the performance filter upgrade for the "Super E" and "Super G" teardrop models. Like all of the other K&N filters for Screamin' Eagle intakes, these models offer up premium performance and protection.

Cox's and his well-developed EVO 8 hillclimber were up to the challenge of the 2017 Rallysprint

Cox broke the record not once but three times at the 2016 event, with a fastest time of 55.23 seconds. Unfortunately, despite his record times in the heats, he suffered a mechanical failure on the last elimination run. However, during this year’s final two, Cox again faced Mike Summerfield, but this time Cox both broke his own record with a time of 54.96 seconds and won the event overall.

The official name of the event is the 2017 Motul Possum Bourne Ashley Forest Rallysprint, named after the late Peter “Possum” Bourne. Bourne earned his nickname as a teen when he drove his mother’s car into a ditch to avoid a possum on the road.

Bourne’s driving improved greatly and he won the FIA Asia-Pacific Rally Championship three times, the Australian Rally Championship seven times consecutively, and was the first driver from that part of the world to earn a works drive in the WRC with Prodrive Subaru. Sadly Bourne lost his life in a road accident while planning the route for an upcoming rally in his native New Zealand in 2003.

Besides Bourne, who won the Ashley Forest Rallysprint three times, other winners include: Steve Millen, Rod Millen, John Woolf, and Hayden Paddon. The most recent three runnings have been won by Matt Summerfield, but the course record Cox broke last year went back to 1999. That previous record was set by Kim Austin in a V8-powered AWD Mitsubishi Starion who covered the course in 56.77 seconds.

WRC Superstar Hayden Paddon navigates the hairpin, but his special Hyundai wouldn't finish the event

And how did Cox feel about Paddon dropping out so early? “I was disappointed that Hayden’s car never made the distance. I knew before the event that there was a good chance he would have problems as they built the car to a high power in a short period of time. We've learnt over the last two years that it takes time to get it right. But I really hoped we would be in the final together,” Cox responded.

We asked Cox what outcome he would have expected if he’d faced Paddon in the finals? “If Hayden had made it through all of the runs, the pace by the end of the day would’ve stepped up a level. We would have pushed each other even more as the day went on. I still believe Cox Motorsport would have won and kept our record. We didn’t take the car to its limit and it has a lot more left,” Cox responded.

And after losing last year in the finals after breaking the old record, this victory must be especially sweet. How does it feel? “It’s an amazing feeling to have won the event now and even better to hold the record and knowing Cox Motorsport is the fastest at the prestigious Ashley Forest Rallysprint. Breaking the 17-year-old record last year was an awesome feeling and to do it again this year making it even harder for others,” Cox added.

After setting a new record last year only to break in the final, Cox is victorious in 2017

Thanks Sloan and congratulations!

Cox Evo Photograph by Euan Cameron Photography

Group & Hayden Photographs by Geoff Ridder

American Superbike Champion Toni Elias shows off the K&N race filter for the Suzuki GSX-R1000

K&N Direct Replacement Sport Bike Filters

K&N has a nearly half-century legacy of producing the world’s finest washable, reusable filters that are direct replacements for restrictive stock air filters. While these filters allow a substantial increase in airflow, they require no engine management modifications for their performance benefit. They are also street legal in most states.

K&N direct replacement filters feature multiple layers of our legendary oiled, pleated, cotton gauze filter media for performance-enhancing airflow. The reduction in restriction that the filters provide is part of the K&N design goal of increased horsepower, torque, and throttle response.

K&N offers street and race-specific filters for many sport bikes like this one for Honda's CBR1000RR

K&N Race-Spec Sport Bike Filters

Track day, closed course, and racing bikes will benefit from the raw power that K&N’s race-spec air filters will provide. These filters are designed with two plies of filter media and fewer pleats than our standard K&N high flow air filters for the ultimate in airflow.

Unlike K&N’s direct replacement filters, our race-spec units will require remapping of the engine’s fuel management system. They work well with full-race exhaust systems and other high-performance modifications. Race-spec filters are not for street use.

These filters fit directly in the factory airbox and are fully washable and reusable for years of reliable service. Simply put, you will not find a better all-out performance filter for race and track applications – period.

K&N street duty filters give excellent filtration. The Aprilia AL-1010 filter test is shown here

Look below for the numerous sport bike manufacturers and models that are candidates for both the standard K&N high-flow filter and the race-spec, track-only model. For specific model years and applications, use the K&N search by vehicle tool to search K&N's comprehensive online portfolio of filters.

Aprilia:

Aprilia is the perfect starting point for our look at bikes that can be fitted with either a K&N direct replacement or a race-spec air filter. In the relatively brief history of the company, Aprilia has taken 54 world championship titles and has won an impressive 294 Grand Prix races.

The Italian company’s sporting flagship, the RSV4, and the exciting Tuono are prime candidates for either of K&N’s purpose-built air filters. The standard K&N AL-1010 will keep the Aprilia models street legal while giving a substantial boost in power-producing airflow. The race-spec AL-1010R will give a race or track day Aprilia the potential for even more horsepower and torque.

BMW:

The Bavarian beast of a sport bike, the BMW S1000RR, has become a staple on the podium of World Superbike racing as well as a favorite of sport-oriented street riders. As such, street riders and racers both have a great choice of air filter for the bike.

K&N fiters for both street and track come pre-oiled and ready to install in your sport bike

Honda:

The sport bike legacy of the venerable Honda marquee is legendary. From local club racing all the way up to MotoGP, Honda is a front-runner.

Honda’s middleweight speedster, the CBR600RR can be fitted with the HA-6007 for street use, or the HA-6007R for the track. Honda’s liter-sized 1000RR will benefit from the K&N HA-1008 for the street and the HA-1008R for the track.

Kawasaki:

Kawasaki and speed have become virtually synonymous over the decades. K&N makes both street and race-spec air filters for two bikes in the Kawasaki sport bike family. The ZX14R also has an application-specific K&N filter option.

ZX6R 600cc Ninja owners can choose the street model KA-6007 or the closed-course KA-6007R version. The applications for the 1000cc ZX10R Ninja are the KA-1011 for the street, and KA-1011R for the track. The big and bad ZX14R Ninja will use the street-biased KA-1406.

Suzuki:

Every K&N sport bike filter is carefully engineered for a perfect fit in the factory air box

The Suzuki GSX-R600 and GSX-R750 can be fitted with the K&N SU-7511 for street duty, and the SU-7511R for race and track applications. Owners of the fire-breathing GSX-R1000 can choose the street-specific SU-1009 or the race-spec SU-1009R. Suzuki GSX1300R Hayabusa riders can choose the SU-1308 street filter or the SU-1308R race filter.

Yamaha:

The Yamaha YZF line is race tested, but fully at home on public streets. Like the other sport bikes we have discussed, the Yamaha is a candidate for both street and track-only K&N filtration.

The 600cc YZF R6 will use the YA-6008 on the street and the YA-6008R on the track. YZF R1 street pilots will use the K&N YA-1009 or YA-1015 and racers of the 1000cc sport bike can opt for the YA-1009R or YA-1015R depending on the model year.

The K&N air intake systen for 2017 F250 & F350 Super Duty adds power and increases response

The 6.2L V8 was designed from the outset as a truck engine, so durability was key to the design. The engine features a deep-skirt cast iron block with cross-bolted main caps, two-valves per cylinder, SOHC aluminum heads with roller-rocker shafts, and two spark plugs per cylinder, as well as dual-equal variable cam timing. And while torque has been increased, horsepower is the same 385 HP as in previous years.

If you’re looking for a horsepower increase for your 2017 F250 or F350 Super Duty, look to K&N. The K&N 77-2588KTK air intake system adds 18.96 estimated horsepower at the wheels. That’s an instant increase in performance and throttle response.

Fresh air first enters a 7.5-inch tall RC-5179 K&N high-flow air filter positioned within a heat shield that installs into the space of the factory air box. The heat shield protects the cool incoming air from being affected by high underhood temperatures. The cooler the air is as it flows into the engine, the more power the engine can generate.

Much of the performance increase can be attributed to the oversized conical air filter manufactured from multiple layers of oiled cotton filter media. This filter media offers a greater surface area and thus less resistance than traditional filters.

The K&N air intake replaces the stock air box and includes a heat shield to keep intake temp down

Further, the K&N air intake tube significantly reduces restriction to incoming airflow over the stock item, as well as calms power-robbing turbulence. Air passes through an aerodynamically-verified black powdercoated mandrel-formed aluminum intake tube directly into the engine’s throttle body. The intake tube accommodates the factory mass air sensor, fuel pressure hose, and crankcase vent hose.

Best of all, the K&N 77-2588KTK can be installed in 90 minutes or less with simple hand tools like a ratchet set, a few screwdrivers, and a couple of wrenches. All tools required are listed in the clear, step-by-step photo-illustrated instructions specific to your car that come included in the package.

The K&N conical air filter can go 100,000 miles between cleanings, depending on conditions

At intervals of 100,000 miles (depending on your driving conditions) use the K&N recharger kit 99-5000 to quickly clean and refresh your K&N air filter, preparing it for another 100,000 miles of driving.

The K&N air filter you purchase is designed to last the lifetime of your vehicle, which K&N guarantees will perform for up to 10 years or 1,000,000 miles without requiring replacement.

The K&N 77-2588KTK is designed to fit the following vehicles:

2017 FORD F350 SUPER DUTY 6.2L V8 Fuel Injection - All Models
2017 FORD F250 SUPER DUTY 6.2L V8 Fuel Injection - All Models

Harrison Burton wins his first NASCAR K&N Pro Series East championship at Dover

Burton won the National Fallen Firefighters 125 presented by Carl Deputy & Sons Builders and erased an eight-point deficit to capture his first K&N Pro Series East championship.

“What an honor to win both the race and championship at Dover, it’s pretty freaking cool,” Burton said. “It’s what I dreamed to do as a kid, win races at tracks like this and win NASCAR championships. To come out and do that is pretty surreal. I’m pretty pumped up about it.”

Burton was eight points behind Todd Gilliland in the K&N Pro Series East standings before the race at Dover. Gilliland ran into trouble when he blew a tire on lap 56. He dropped out of contention and cleared the way for Burton to take the championship. Burton still had to finish the race and collect enough points to pass Gilliland for the K&N Pro Series East title.

Harrison Burton is the youngest driver to win a NASCAR K&N Pro Series East championship

“This race kind of caps it all off for this team,” Burton said after the race. “A bunch of guys who never quit and I’m glad I fit into that system where people that put everything we got into what we’re doing. Now that it’s all come to fruition and we got to bring home two trophies, it’s a big relief and we’re going to go have fun now.”

Burton won his fifth race of the season. NASCAR Monster Energy Cup Series driver Joey Logano was the youngest driver to win a K&N Pro Series East championship at 17 years, 3 months, 28 days in 2007. Burton ended up with 593 points, eight points ahead of Gilliland in the final K&N Pro Series East standings. Burton joined his dad, Jeff Burton, as a NASCAR race winner at Dover International Speedway. Jeff Burton won the Cup Series race at Dover in 2006.

Harrison Burton won five NASCAR K&N Pro Series East races including the season finale at Dover

“This one is really disappointing,” said Gilliland who leads the NASCAR K&N Pro Series West championship standings with two races to go. “I felt like we had pretty good control of it going in here. We were just as fast as Burton in the race. Just having a tire go down like that is heartbreaking for sure. I’m really proud of everyone at Bill McAnally Racing. We’ve had the fastest cars here all year, just didn’t have the luck to go along with it.”

Garcia, who led a race-high 71 laps, dropped to 10th place. Chase Purdy won the Sunoco Rookie of the Year in the K&N Pro Series East despite a last-place finish in the race at Dover.