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Massive tire shake for Allen Johnson meant his race was over almost immediately, while Vincent Nobile made a straight, clean run to advance to the semis

The 2015 NHRA K&N Horsepower Challenge was officially underway following an on-track ceremony presenting the Horsepower Challenge drivers and sweepstakes finalists to the audience

The K&N NHRA Horsepower Challenge is a special three-round NHRA Pro-Stock drag racing shootout held during the SummitRacing.com NHRA Nationals at The Strip at Las Vegas Motor Speedway in Las Vegas, Nevada. Professional NHRA Pro-Stock drivers accumulate points based on final qualifying positions at 24 NHRA national events leading up to the K&N NHRA Horsepower Challenge. Seven drivers who accumulate the most points during the 24-race series qualify for the challenge along with one driver who is selected by a special fan vote on the NHRA website. The professional NHRA Pro-Stock driver who wins the K&N NHRA Horsepower Challenge takes home $50,000.

Qualifying order starting from first for the 2015 NHRA Horsepower Challenge was as follows: Shane Gray, Jason Line, Erica Enders-Stevens, Allen Johnson, Vincent Nobile, Chris McGaha, and Jonathan Gray. Professional NHRA Pro-Stock driver V. Gaines was selected by fan vote to fill the 8th spot in the 2015 NHRA K&N Horsepower Challenge. Gaines promised to donate the $50,000 purse to the Wounded Warriors Project if he won. For the last six years K&N air filters has run a sweepstakes in which eight finalists are chosen at random and awarded a Prize Trip Package to include travel expenses and hotel accommodations for two in Las Vegas, Nevada. Finalists are randomly paired with one of the eight K&N NHRA Horsepower Challenge professional NHRA Pro-Stock drivers. A grand prize winner is determined based upon the finalist who is paired with the driver who finishes first in the K&N NHRA Horsepower Challenge.

Chris McGaha's car made a hard right turn on the launch forcing him to let off the gas while Erica Enders-Stevens had a nice run, matching Vincent Nobile's ET but with a better speed

Jonathan Gray had a better elapsed time; however it was Jason Line’s better reaction time which earned him the win

The 2015 NHRA K&N Horsepower Challenge was officially underway following an on-track ceremony presenting the NHRA Horsepower Challenge drivers and sweepstakes finalists to the audience watching from the stands. The winning driver and new owner of the TRD parts equipped Toyota Tacoma would be decided in a few hours following three rounds of racing. The first round of eliminations saw Shane Gray lined up against V. Gaines, Allen Johnson taking on Vincent Nobile, Jason Line Vs. Jonathan Gray, and last, but not least, Erica Enders-Stevens battling Chris McGaha.

Vincent Nobile and Erica Enders-Stevens both had easy wins as both Allen Johnson and Chris McGaha had to let off the throttle during their runs and coast across the finish line. Jason Line and Jonathan Gray had a very close match. Gray had a better elapsed time (E.T); however it was Line’s better reaction time which earned him the win. Shane Gray narrowly defeated V.Gaines with his run of 6.676 seconds at 207.91 MPH vs. Gaines’ 6.688 at 207.98. Shane Gray was set to go up against Vincent Nobile and Jason Line would take on Erica Enders-Stevens in the semi-finals.

Shane Gray narrowly defeated V.Gaines with his run of 6.676 seconds at 207.91 MPH vs. Gaines’ 6.688 at 207.98

Erica Enders-Stevens’ 0.017 and 6.652 E.T. was good enough to beat Jason Line’s .033 R.T and 6.648 E.T. in the 2015 NHRA K&N Horsepower Challenge semi-finals

There was a lull of approximately three hours between the NHRA K&N Horsepower Challenge first round of eliminations and the semi-finals. Cooler temperatures made for quicker runs down the ¼ mile drag strip at Las Vegas Motor Speedway. Once again a round was decided by reaction times. Erica Enders-Stevens’ 0.017 and 6.652 E.T. was good enough to beat Jason Line’s .033 R.T and 6.648 E.T. Shane Gray was all over the first half of the lane, Nobile was loose after that. But Gray had to throw in the towel and Nobile got a chance at a second NHRA K&N Horsepower Challenge win.

The final round of the 2015 NHRA Horsepower Challenge was held less than an hour after the semi-finals. Enders-Stevens barely made it to the starting line on time. The car’s between-rounds maintenance took longer than expected. With live TV covering this special event, there was no "wiggle room" available, however the team came through under pressure. It was a close race with Enders-Stevens leaving first with a 0.040 RT. Enders-Stevens never swayed and crossed the finish line before Shane Gray with the quickest E.T, 6.650 seconds, and second fastest speed of the 2015 NHRA K&N Horsepower Challenge. Gray crossed the finish line in 6.694 seconds at 207.62 MPH.

Shane Gray was all over the track forcing him to throw in the towel and Vincent Nobile advanced to the finals with a chance at a second NHRA K&N Horsepower Challenge win

The final round was close with Enders-Stevens leaving first and getting the quickest E.T, 6.650 seconds, and second fastest speed of the 2015 NHRA K&N Horsepower Challenge

Enders-Stevens had a well-rounded weekend, doubling up on victories by winning the SummitRacing.com Nationals on Sunday and the 2015 NHRA K&N Horsepower Challenge. She is the first driver to sweep both events in consecutive seasons since Bob Glidden accomplished the feat in 1987 and 1988. She pocketed $50,000 for winning the specialty event and an extra $25,000 for doubling up. Caitlin Clement, Series and Track Support Manager for K&N Engineering, was pleased with the event and outcome as well. “K&N would like to commend all eight drivers for putting on a great show and congratulate Erica Enders-Stevens on her second consecutive win. All in all, the 2015 K&N Horsepower Challenge was a phenomenal event, and we are already working to make next year’s edition even better,” said Clement.

K&N Engineering, Inc. is the world's leader in reusable air filters. K&N High flow reusable air filters, High performance air intake systems and premium oil filters are available at most retailers and directly from K&N. K&N is heavily involved in nearly every form of motorsports such as off-road and powersports, drag racing, stock cars and road racing. For more information about K&N Filters, please visit www.knfilters.com.

Erica Enders-Stevens won the $50,000 K&N Horsepower Challenge for the second consecutive year during the SummitRacing.com NHRA Nationals at Las Vegas Motor Speedway

Enders-Stevens had a well-rounded weekend, doubling up on victories by winning the SummitRacing.com Nationals on Sunday and the 2015 NHRA K&N Horsepower Challenge

K&N Engineering, Inc. is the world's leader in reusable air filters. K&N washable cabin air filters, High flow reusable air filters, High performance air intake systems and premium oil filters are available at most retailers and directly from K&N. K&N is heavily involved in nearly every form of motorsports such as off-road and powersports, drag racing, stock cars and road racing. For more information about K&N Filters, please visit www.knfilters.com.

Ryan Partridge, in the number 9 Eibach Springs/Sunrise Ford/Lucas Oil/Go-Parts.com car, was able to take the lead from Eggleston on lap 124

Dalton Sargeant earned the pole position and 21 means 21 Pole Award presented by Coors Light

The NASCAR K&N Pro Series (NKNPS) West King Taco Catering/NAPA Auto Parts 150 at Irwindale Speedway in Irwindale, California featured 10 lead changes among four drivers. Of those four drivers Chris Eggleston, a 26-year old from Colorado, led a race-high 102 laps. As the race wound down Ryan Partridge, in the number 9 Eibach Springs/Sunrise Ford car, was able to take the lead from Eggleston on lap 124.

A late race caution signaled a restart giving Eggleston the opportunity to make his move to regain the lead. With 6 laps remaining in the NASCAR K&N Pro Series West King Taco Catering/NAPA Auto Parts 150 at Irwindale Speedway in Irwindale, California Eggleston edged past Partridge taking Dalton Sargeant with him.

With 6 laps remaining in the King Taco Catering/NAPA Auto Parts 150 at Irwindale Speedway in Irwindale, California Eggleston edged past Partridge taking Dalton Sargeant with him

In just his seventh career NASCAR K&N Pro Series start Chris Eggleston has been able to capture two wins

Dalton Sargeant, a 17-year old Florida native, drives for HScott Motorsports in the NKNPS East series and has earned himself a seat with the first-year team Jefferson Pitts Racing in the NKNPS West series. Sargeant had the fastest qualifying time of the day with a lap time of 18.259 seconds at 98.582 MPH. In an attempt to take the lead Sargeant let female driver Nicole Behar past him on the last lap. Dalton Sargeant crossed the line in third place with Gracin Raz and Ryan Partridge rounding out the top five respectively.

Behar, who is a Sunoco Rookie of the Year contender, finished in second behind Eggleston which marks the highest finish for a female driver in the series’ history. Of her second place finish Nicole Behar said “Going into the night we didn’t know what we were going to do. Save tires or go for it. With 75 (laps) to go we decided we wanted to go for it. With that last caution we gave it everything we had.”

Nicole Behar finished in second behind Eggleston which marks the highest finish for a female driver in NASCAR K&N Pro Series West history

One autographed K&N Pro Series mini Bell replica helmet will be given away through K&N’s official Twitter feed twitter.com/knfilters after all 28 NASCAR K&N Pro Series East & West races

In just his seventh career NASCAR K&N Pro Series start Eggleston has been able to capture two wins. His previous win came at his hometrack, Colorado National Speedway, in 2014. After the race Chris Eggleston said “It was a great night overall. I was so nervous coming into this race with limited practice. Having never been here and going up against veterans I knew it was going to be tough.”

With two races completed in the 2015 season Dalton Sargeant leads the points chase followed by Eggleston and David Mayhew.The next NASCAR K&N Pro Series West race will be at Arizona's Tucson Speedway for the Wildcat 150 on Saturday, May 2.

K&N Engineering, Inc. is the world's leader in reusable air filters. K&N washable cabin air filters, High flow reusable air filters, High performance air intake systems and premium oil filters are available at most retailers and directly from K&N. K&N is heavily involved in nearly every form of motorsports such as off-road and powersports, drag racing, stock cars and road racing. For more information about K&N Filters, please visit www.knfilters.com.

K&N high-flow air filter number YA-6814 is engineered to increase airflow while also fitting inside the stock air filter box of 2014-2016 Yamaha parallel twin MT-07 & FZ-07 models

The Yamaha MT-07, or FZ-07 as it is called in the United States, is a significant new model in the Yamaha Motor Company’s vehicle line up. The 689cc parallel twin cylinder engine powered naked sport bike was released just after the MT-09 / FZ-09 triple. Yamaha Product Planning manager Oliver Grill said the MT-07 / FZ-07 was designed to "Make the intuitive side of riding more fun." Grill went on to explain “The bike is more casual, feels cool also at lower speeds. Yet any speed, any gear, if you open up the throttle you will immediately feel the power delivery and enjoy the sound." The MT-07 / FZ-09 power delivery is attributed to the inline twin engine's crankshaft designed with a 270 degree offset. The two cylinders fire at an irregular interval in order to harmonize the engine, resulting in a more immediate response and feeling of torquiness for the rider.

Here to help boost horsepower, torque, and throttle response of the 2014, 2015 and 2016 Yamaha parallel twin MT-07 & FZ-07 models is a world famous reusable air filter from K&N. The superior airflow offered by a K&N motorcycle replacement air filter can result in superior performance. A K&N washable air filter is different from the stock filter in that K&N uses cotton gauze filter media woven to exacting specifications. Cotton, by nature, is more breathable than the paper or foam media used for most motorcycle air filters. Getting more air into your engine with less restriction can increase performance, acceleration, and throttle response.

K&N replacement air filters are designed to hit that “sweet spot” of superior airflow and superior performance without sacrificing filtration or engine protection

Additionally, the pleated design, combined with the depth loading nature of K&N cotton gauze air filters allows for increased air filter service intervals. A K&N cotton gauze air filter is designed to be repeatedly washed and reused with one of the K&N Recharger air filter service kits. Recharger, 99-5000, includes 12 fluid ounces of air filter cleaner and a 6.5 ounce aerosol bottle of air filter oil for quick and easy application. Recharger, 99-5050, differs in that it includes an 8 ounce squeeze bottle of K&N filter oil for a more precise application.

K&N replacement air filters are designed to hit that “sweet spot” of superior airflow and superior performance without sacrificing filtration or engine protection. K&N performs filtration efficiency testing following the internationally recognized ISO 5011 protocol to guarantee that our air filters will provide high airflow without sacrificing engine protection. K&N 2014-2016 Yamaha MT-07 and FZ-07 replacement air filter, number YA-6814, was shown to have a 99.40% overall filtration efficiency rating while still flowing more air and holding more dirt than the original equipment air filter. K&N has made these results available by clicking on the Air Filter Test Data link.

Part number YA-6814 for 2014, 2015 and 2016 Yamaha MT-07 & FZ-07 parallel twin 689cc models is backed by a 10-year/million mile limited warranty. This means that Yamaha MT-07 & FZ-07 parallel twin owners can years of increased performance, reusability, and long air filter service intervals when using K&N washable and reusable replacement air filter YA-6814.

YA-6814 is designed to provide a lifetime of increased performance without any need for modifications to the air box or tuning for the following motorcycles:

2016 YAMAHA MT07 689
2016 YAMAHA FZ-07 689
2015 YAMAHA MT07 689
2015 YAMAHA FZ-07 689
2014 YAMAHA MT07 689

K&N replacement air filter, YA-6814, is designed as a direct air filter cross reference for the following Yamaha part numbers:

Yamaha 1WS1445000
Yamaha 1WS144500000

To find additional performance parts from K&N, such as K&N replacement oil filters, use the search by vehicle tool. To find an authorized K&N dealer near you, use the Find Dealer search function.