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The K&N RG-1003RD-L universal chrome round-tapered clamp-on air filter

To meet minimum filtration standards, paper air filters must be thick and/or the fibers must be tightly compressed and dense. In order for it to provide adequate filtration, the paper filter must be more restrictive to airflow by design. As the paper filter becomes more and more clogged, the pressure inside the filter drops while the atmospheric air pressure outside the filter remains the same. When the pressure differential becomes too great, dirt particles can be pulled around the filter and paper medium.

Foam air filters lack sufficient surface area and that hinders dirt holding capability. Open cell foam generally gets saturated with oil and dirt builds on the outside of the cell and blocks the openings. Higher vacuum pressure distorts the cells and draws the dirt deeper into the filter. Airflow is reduced as cells become blocked.

K&N air filters feature four to six layers of cotton gauze that is treated with a special grade of filter oil that catches and holds the contaminants. Dirt particles are caught in the crisscrossed cotton fibers and the oil holds them in suspension. The air passes over the dirt particles trapped on the surface of the fibers and airflow remains high despite the build-up of dirt. Tests confirm that K&N air filters generally achieve overall filtration efficiency range of 96% to 99%.

The K&N RG-1003RD-L air filter features a 4.5-inch large end diameter, base inside diameter of 2.75-inches and base outside diameter of 4.5-inches. The ultra-strong molded pliable rubber of the flange absorbs vibration and ensures a secure attachment.

Moreover, this filter is washable and reusable. K&N offers an air filter cleaning kit that is specially formulated to cleanse the filter after 50,000 miles, depending on driving conditions. The cleaning kit also recharges the filter so that it can be reused for another 50,000 miles. If properly cleaned when it is supposed to be, the filter could be the last you will ever have to buy.

K&N offers a large assortment of clamp-on universal air filters including:

• Round Straight Air Filters

• Round Tapered (or Cone) Air Filters

• Oval Straight Air Filters

• Oval Tapered Air Filters

• Dual Flange Straight Air Filters

• Oval Air Filters

• Dual Flange Tapered Air Filters

• Oval Air Filters

• Custom End Cap and Inverted Air Filters

• XStream® Air Flow Top Air Filters

Nick “Apex” Brocha's Turbo Triumph produces huge horsepower in style

As they say, necessity is the mother of invention, and the old adage fits Brocha’s bike-building style and expertise to a tee. “I've been a professional stunt rider for the last 10 years, and with the nature of the sport being very hard on motorcycles, my experience in constant repair and troubleshooting turned into a passion to improve on stock platforms,” Brocha reveals. The prolific filmmaker, stunter, and builder has crafted some of the coolest custom stunting sport-bikes around.

Brocha and his Triumph 675 (right) in a drifting matchup

“Fast is fun; fast and beautiful wins. I'd like to be able to just sit and stare at the things I create, but when I ride them, they have to perform so strongly that I don't worry about putting them into the ground. You gotta be careful; if she's beauty over performance you'll never ride it hard enough in fear you'll put a scar on her,” says Brocha in true stunt-rider fashion. “I don't think I have all the answers by any means; however, I work from a performance first mentality and focus on taking that principle and working on the aesthetics of the builds in kind.”

Brocha's Turbo Triumph keeps good company at the SEMA show

Obviously, a bike with that kind of appetite for fuel needs to breathe freely and yet be protected from the ravages of airborne contaminants kicked up while stunting. “I choose K&N to protect all my motorcycles, and most importantly my turbo bikes,” Brocha says. “I hate that it sounds like a sales pitch, but I don't have another way to say it; best of luck to anyone who doesn't use high quality oil and air filtration, especially when it matters.”

The Turbo Triumph and its soul brother spend a lot of time sideways

We’d be remiss in totally ignoring the Triumph’s very cool styling. Like the perfect skirt length, the bodywork reveals just enough of the turbo to titillate. The stretched swingarm is carried out masterfully, and the forward-biased stance of the bike embodies speed. The camouflage paint-scheme on the tail section holds a bit of irony, as this bike is not hiding anywhere!

As for his future plans, Brocha’s focus is set on even more performance. “I'm building a new set of engines for this turbo bike platform, and also enhancing the suspension,” Brocha says. “I’m going to try and build the ultimate 600 class turbo bike. Look for big power in 2017!” Oh, you bet we will, Nick.

Seventeen year-old Cori Andrews of Temecula, California.

“He bought me a Trophy Kart in 2011 when I was 12 and taught me how to drive it before I participated in any events,” she said. “The car had a shifter and three-gears and I had to master that as well as down shifting in the turns. Once I got the hang of it, I went into competition.”

She actually raced in two different classes in the kart division – Modified Go-Kart and Trophy Kart. She proved to be pretty good in her first year winning races and a championship. Some of those victories included races at Glenn Helen in which both UTVs and karts competed. “That was a big deal,” she said. She also won races at the Lake Elsinore Speedway in Southern California, in Arizona, and in Utah.

An amateur, Cori has her own racing team, Cori Andrews Motorsports, which she and her dad started close to two years ago.

“We work on the car and manage the team together,” she said. “I handle my own promotion on Facebook and Twitter and I work with the sponsors.” She also does a regular video blog about her exploits in racing and posts it on Youtube. Many of her video blogs have been posted under “Team Two Two.” “That’s my nickname and my car’s number is 22,” she added. “22 is my dad’s birthday – January 22.”

Other big wins for her include the Midget Lite Main Event at Antioch Speedway, in Antioch, California, on April 2015 and the Lightning Sprint Race at the Perris Auto Speedway in Perris, California in May 2014. She has won a total of 12 races between 2011 and 2015.

Cori takes on the competition in her sprint racer.

“I expect to run more World of Outlaws Sprint Car Series races,” she said. “They have a tour from state-to-state. So we plan to travel with the tour. These are pro races and every race is huge.”

She is the only female competing in sprint races on the west coast. She was the first woman to win many of her 12 racing victories. She also held the record for fast time for a woman at the Arizona Speedway. “That was a huge deal in Mini Sprint Racing,” she said.

She didn’t have much trouble actually getting to race as the pioneer woman in the class. However, there was some friction when she began to win.

“People said that I cheated when I won a race and that I can’t run this race because I’m a girl. There was some intimidation, but I got through all of that.”

She spreads out her preparations to last an entire week when she is scheduled to compete on a weekend. She added that there are few contests that take place on weeknights.

Her preparation includes a lot of motor work such as cleaning the air filter, checking the valves and springs, and making sure that the nuts and bolts are tight, and more. K&N Engineering has been sponsoring Cori throughout her racing career.

“The relationship has been amazing,” she said. “I love all the guys there and love the products. They’ve been awesome.”

She noted she has used K&N air boxes, air and oil filters, and K&N air filter cleaning products.

Her other sponsors include:

• Hostile Wheels

• SJR

• Wilwood Brakes

• Sparco

• Mitchell Insurance Company

• Black Beard

• Lucas Oil

• T-Shirts by Timeline

• Driven Graphics

• D.H. Graphics

• Henchcraft

• Rosson Racing

• Crew Safety Gear

• Tisler Engines

She does compete in race series that include a points competition.

“You have to run in races consistently in order to build your point score, but going after points can lead to problems. You can mess up your car and tear up equipment. My goal is to get seat time,” she concluded.

The NASCAR K&N Pro Series East opens at New Smyrna Speedway in Florida on Feb. 19

Justin Haley won the NASCAR K&N Pro Series East championship with two wins and 13 top-five finishes in 14 races.

The recently released 2017 NASCAR K&N Pro Series schedule has drivers and teams visiting 23 tracks over 27 races. Both series will visit some familiar tracks. There are some new stops on the touring schedule. The NASCAR K&N Pro Series opens in the East at New Smyrna Speedway in Florida on Feb. 19. It is the same day the newly named NASCAR Monster Energy Cup Series has qualifying for the Daytona 500 at nearby Daytona International Speedway.

“The NASCAR K&N Pro Series has been an exceptional proving ground for our sport’s up-and-coming drivers,” said George Silbermann, NASCAR Vice President of Touring & Weekly Series. “The 2017 schedules for the East and West feature an assortment of tracks that will test the drivers and provide a platform to showcase their talents.”

The NASCAR K&N Pro Series West visits Irwindale Speedway in California on March 25

The K&N Pro Series East will run a similar event at South Boston Speedway in Virginia in May.

Gilliland won the K&N Pro Series East opener at New Smyrna Speedway in 2016 to add to his win total. Ryan Partridge won the K&N Pro Series West race at Tucson Speedway in 2016. The K&N Pro Series teams and drivers will race at some of the same tracks as the Cup and Xfinity Series drivers and teams. The West Series visits Sonoma Raceway in California in June. The East Series races at Bristol Motor Speedway, New Hampshire Motor Speedway, Watkins Glen International and Dover International Speedway. The West and East Series will run a combined event at Iowa Speedway in July, an annual event that pits the best the developmental series has to offer.

The NASCAR K&N Pro Series West will race at Sonoma Raceway in California on June 24

The K&N Pro Series East makes two new stops. The first is at Memphis International Raceway in Tennessee in June. The second is at Berlin Raceway in Michigan in July. The East Series will also make a return to Thompson Speedway Motorsports Park in Connecticut in July. The East Series first raced at Thompson Speedway in 1988, when the series was known as the NASCAR Busch North Series.

The K&N Pro Series East ends at Dover International Speedway in Delaware on Sept. 29. The season finale in the K&N Pro Series West is at Kern County Raceway Park on Nov. 4.

The RK-3941 is a full intake system that adds performance to your Harley

While we are on the subject of performance, you should know that K&N guarantees a power gain with the RK-3941 air intake. While there are many variables in dynamometer testing, the results shown in K&N's dyno runs are impressive. When installed on an otherwise stock 103CI Harley® Ultra Limited, an estimated gain of over 8 horsepower was achieved. That peak horsepower gain came at a riding sweet-spot of just over 4500 RPM. It's important to note that from very low revs on, the Ultra Limited showed an increase in estimated horsepower. That makes the gains very usable in real-world riding.

All installation parts are included in the intake kit

The air intake fits behind the stock Harley intake cover

When it is time to wash the filter element, the 99-5000 filter service kit makes the task easy and quick. The reusable filter makes the wasteful and costly cycle of purchasing and disposing of paper elements a thing of the past. Like all K&N products, the RK-3941 is backed by an industry-leading 10-Year/Million Mile Warranty.

This K&N air intake system fits the following vehicles:

2017 HARLEY DAVIDSON FXSB BREAKOUT 103 CI - All Models
2017 HARLEY DAVIDSON FLSTN SOFTAIL DELUXE 103 CI - All Models
2017 HARLEY DAVIDSON FLSTFBS FAT BOY S 110 CI - All Models
2017 HARLEY DAVIDSON FLSTF FAT BOY 103 CI - All Models
2017 HARLEY DAVIDSON FLSTC HERITAGE SOFTAIL CLASSIC 103 CI - All Models
2017 HARLEY DAVIDSON FLSS SOFTAIL SLIM S 110 CI - All Models
2017 HARLEY DAVIDSON FLS SOFTAIL SLIM 103 CI - All Models
2016 HARLEY DAVIDSON FXSB BREAKOUT 103 CI - All Models
2016 HARLEY DAVIDSON FLTRXS ROAD GLIDE SPECIAL 103 CI - All Models
2016 HARLEY DAVIDSON FLTRX ROAD GLIDE 103 CI - All Models
2016 HARLEY DAVIDSON FLTRU ROAD GLIDE ULTRA 103 CI - All Models
2016 HARLEY DAVIDSON FLSTN SOFTAIL DELUXE 103 CI - All Models
2016 HARLEY DAVIDSON FLSTFB SOFTAIL FAT BOY LO 103 CI - All Models
2016 HARLEY DAVIDSON FLSTF FAT BOY 103 CI - All Models
2016 HARLEY DAVIDSON FLSTC HERITAGE SOFTAIL CLASSIC 103 CI - All Models
2016 HARLEY DAVIDSON FLS SOFTAIL SLIM 103 CI - All Models
2016 HARLEY DAVIDSON FLRT FREEWHEELER 103 CI - All Models
2016 HARLEY DAVIDSON FLHXS STREET GLIDE SPECIAL 103 CI - All Models
2016 HARLEY DAVIDSON FLHX STREET GLIDE 103 CI - All Models
2016 HARLEY DAVIDSON FLHX ELECTRA GLIDE SPECIAL 103 CI - All Models
2016 HARLEY DAVIDSON FLHTKL ULTRA LIMITED LOW 103 CI - All Models
2016 HARLEY DAVIDSON FLHTK ULTRA LIMITED 103 CI - All Models
2016 HARLEY DAVIDSON FLHTCUTG TRI GLIDE ULTRA 103 CI - All Models
2016 HARLEY DAVIDSON FLHTCU ELECTRA GLIDE ULTRA CLASSIC 103 CI - All Models
2016 HARLEY DAVIDSON FLHR ROAD KING 103 CI - All Models
2015 HARLEY DAVIDSON FLTRXS ROAD GLIDE SPECIAL 103 CI - All Models
2015 HARLEY DAVIDSON FLTRX ROAD GLIDE 103 CI - All Models
2015 HARLEY DAVIDSON FLRT FREEWHEELER 103 CI - All Models
2015 HARLEY DAVIDSON FLHXS STREET GLIDE SPECIAL 103 CI - All Models
2015 HARLEY DAVIDSON FLHX STREET GLIDE 103 CI - All Models
2015 HARLEY DAVIDSON FLHTKL ULTRA LIMITED LOW 103 CI - All Models
2015 HARLEY DAVIDSON FLHTK ULTRA LIMITED 103 CI - All Models
2015 HARLEY DAVIDSON FLHTCUTG TRI GLIDE ULTRA 103 CI - All Models
2015 HARLEY DAVIDSON FLHTCUL ELECTRA GLIDE ULTRA CLASSIC LOW 103 CI - All Models
2015 HARLEY DAVIDSON FLHTCU ELECTRA GLIDE ULTRA CLASSIC 103 CI - All Models
2015 HARLEY DAVIDSON FLHR ROAD KING 103 CI - All Models
2014 HARLEY DAVIDSON FLHXS STREET GLIDE SPECIAL 103 CI - All Models
2014 HARLEY DAVIDSON FLHX STREET GLIDE 103 CI - All Models
2014 HARLEY DAVIDSON FLHTK ELECTRA GLIDE ULTRA LIMITED 103 CI - All Models
2014 HARLEY DAVIDSON FLHTCUTG TRI GLIDE ULTRA 103 CI - All Models
2014 HARLEY DAVIDSON FLHTCU ELECTRA GLIDE ULTRA CLASSIC 103 CI - All Models
2014 HARLEY DAVIDSON FLHR ROAD KING 103 CI - All Models