• NICKY HAYDEN TRIBUTE 69-MILE GROUP CYCLING RIDE ON JUNE 9
• SOLVING THE TRANS-AM, TRANS-AMA, INTER-AM, INTER-AMA AND TRANS-USA CONFUSION
There is a lot of historical confusion about the Inter-Am, Inter-AMA, Trans-Am, Trans-AMA and Trans-USA names. Let’s clear it up. It all started with a man named Edison Dye. Edison was not a motorcycle racer, but he was a serious fan of the sport who is widely considered to be the “Father of American Motocross.”
While in Europe, Edison discovered motocross and the new breed of European motocross bikes that were unknown to American consumers. Dye decided that he would import these unusual two-stroke motocross bikes to America. He signed a deal with Husqvarna of Sweden to supply him with as many motorcycles as they could for the American market. The first time they gave him nine bikes.
Once Dye had convinced the Swedes to sell him bikes, he had to find some way to get American riders to buy them. Dye’s marketing plan would change the face of motorcycle racing in the United States. In 1966, Dye flew World Champion Torsten Hallman over to race a handful of select American races. Hallman won every one of them. The next year, 1967, Dye brought over Torsten Hallman, Arne Kring, Joel Robert, Roger DeCoster, Lars Larsson, Dave Bickers and Ake Johnson. The success of Edison Dye’s traveling circus convinced him that America needed a professional motocross series, which led Dye to form the Inter-Am (International-American) motocross series. The sport blew up. It went big overnight, not just selling thousands of tickets, but 10,000 Husqvarnas a year. That is where the name “Inter-Am” makes its appearance in motocross history.
The dirt track-oriented AMA had no interest in the sport of motocross, but once they saw the crowds that Dye’s Inter-Am series was drawing (and the commercial potential of the sport), they muscled into Dye’s territory, counterpromoted against him, and used their infamous heavy-handed tactics to take over what Dye had built. The AMA used its clout to wipe the “Inter-Am” off the circuit and replaced it with the “Inter-AMA.” And that is how the Inter-Am became the “Inter-AMA” The AMA did let Edison Dye promote Trans-AMA races under AMA sanction. And it was in this role that Edison Dye, the founding father of American motocross, became an outcast. As hard as it may be to believe, less than five years after introducing motocross to America, Edison Dye was banned from the sport.
What did Dye do? It rained at the 1974 St. Louis Trans-AMA. And Dye, who never really fit in with the motocross crowd with his impeccably styled three-piece suits, decided that if he held the Trans-AMA in the rain, he would lose a lot of money. But, if he canceled it on Sunday morning, he wouldn’t have to pay the AMA purse. Dye canceled the race. And, was never allowed to promote another event.
But we are getting away from the Inter-Am, Inter-AMA, Trans-Am, Trans-AMA and Trans-USA discussion. Let’s recap. The “Inter-Am” was Edison Dye’s original motocross series. The “Inter-AMA” was what the 250cc “Inter-Am” series was called after the AMA took it over. The “Trans-AMA” was the AMA’s attempt to solidify their hold on the sport. The “Trans-AMA” was a winter 500cc series. There never was anything called the “Trans-Am.” But eventually, the Trans-Am sports car racing series and Pontiac, with its Trans Am car took offense to the name “Trans-AMA” and threatened to sue the AMA if they didn’t change it. The “Trans-AMA” series was changed to “Trans-USA” series for the last two years of its existence.
We don’t expect everyone to remember this history, but for the sake of clarity, just say Inter-Am when talkig about the first significant motocross races in America (not Inter-AMA) and never say Trans-Am.
EDISON DYE LIFETIME ACHIEVEMENT AWARD WINNERS (1997-2020)
1997 …Roger DeCoster
1998 …Rick Johnson
1999 …Edison Dye
2000 …Torsten Hallman
2001 …Bruce Brown
2002 …1981 MX Des Nations Team:(Chuck Sun, Danny LaPorte, Johnny O’Mara, Donnie Hansen)
2003 …Gary Jones
2004 …Jeff Ward
2005 …Stu Peters
2006 …Joel Robert
2007 …Bob Hannah
2008 …Brad Lackey
2009 …Tony DiStefano
2010 …Broc Glover
2011 …David Bailey
2012 …Marty Smith
2013 …John DeSoto
2014 …Feets Minert
2015 …Dave McCoy
2016 …Lars Larsson
2017 …Malcolm Smith
2018 …Jody Weisel
2019 …Mitch Payton
2020 …Rex Staten
• “THIS WEEK IN MXA” WITH JOSH MOSIMAN: THE CHALLENGES OF THE OPENING ROUND
• WHO’S WHO IN THE 2021 AMA NATIONAL MOTOCROSS CHAMPIONSHIPS?
450 AMA NATIONAL POINTS STANDINGS
(After 1 of 12 rounds)
1. Dylan Ferrandis (Yam)…45
2. Aaron Plessinger (Yam)…40
3. Ken Roczen (Hon)…40
4. Justin Barcia (Gas)…35
5. Chase Sexton (Hon)…33
6. Jason Anderson (Hua)…29
7. Marvin Musquin (KTM)…27
8. Cooper Webb (KTM)…26
9. Eli Tomac (Kaw)…25
10. Zach Osborne (Hus)…24
250 AMA NATIONAL POINTS STANDINGS
(After 1 of 12 rounds)
1. Jeremy Martin (Yam)…47
2. Jett Lawrence (Hon)…47
3. Michael Mosiman (Gas)…36
4. Justin Cooper (Yam)…36
5. R.J. Hampshire (Hus)…32
6. Hunter Lawrence (Hon)…31
7. Garrett Marchbanks (Yam)…28
8. Austin Forkner (Kaw)…27
9. Colt Nichols (Yam)…21
10. Jalek Swoll (Hus)…17
• 2021 AMA NATIONAL MOTOCROSS WINNERS AT A GLANCE
Venue 450 250
May 29…Pala, CA……………………..Dylan Ferrandis…………..Jett Lawrence
June 5…Thunder Valley, CO
June 19…Mt. Morris, PA
July 3…Red Bud, MI
July 10…Southwick, MA
July 17….Millville, MN
July 24….Washougal, WA
Aug. 14…Unadilla, NY
Aug. 21…Budds Creek, MD
Aug. 28…Crawfordsville, IN
Sept. 4…Pala, CA
450 points leader…Dylan Ferrandis
250 points leader…Jeremy Martin/Jett Lawrence (tie)
DECADE OF DUBYA | GET AN INSIDE PEAK
• FIRST LOOK! 2022 KAWASAKI KX450 & KAWASAKI KX250
As the flagship model in the Kawasaki KX lineup, the 2022 Kawasaki KX450 is built with race-winning components to help get Kawasaki riders to the top step of the podium. Tuned to best suit race-experienced riders, the 449cc liquid-cooled, four-stroke engine boasts an abundance of power along with a slim aluminum perimeter frame, Showa A-KIT technology suspension, coned disc-spring hydraulic clutch, and electric start to deliver the ultimate championship-winning package.
High-performance 49mm Showa coil spring front forks with A-Kit technology can be found up front, featuring large diameter inner tubes that are the same size as those found on the machines of Kawasaki’s factory racing team. The forks enable the use of large damping pistons for smooth action and firm damping. In the rear, a new Uni-Trak linkage system is connected to the Showa Compact Design rear shock that boasts A-Kit technology with large diameter compression adjusters.
The sleek bodywork has been molded to match the V-mounted radiators and narrow chassis design, helping facilitate rider movement and making it easy to slide back and forth. The MSRP is $9499.
2022 KAWASAKI KX250
The 249cc liquid-cooled, four-stroke engine delivers significant low-mid range performance while boasting top-end revs and impressive peak power thanks to its development through Kawasaki’s factory racing efforts. Its electric start system, activated by the push of a button, makes starting easy and convenient and is powered by a lightweight, compact Li-ion battery. The valve train utilizes a finger-follower valve actuation to help achieve a high rev limit and allows for the use of more aggressive cam profiles. A diamond-like coating on the finger followers helps protect against wear. Large-diameter, lightweight titanium valves and a high-performance piston with a dry film lubricant coating contribute to strong performance at all rpm.
The KX250’s slim aluminum perimeter frame is based on its KX450 counterpart. The MSRP is $8399.
• SEE IT NOW! AMA NATIONAL TV SCHEDULE: THUNDER VALLEY ON JUNE 5
• 3-BROS 10-HOUR OF GLEN HELEN NIGHT RACE STARTS THIS SATURDAY (AND ENDS ON SUNDAY AT 2:00 A.M.)
• TAKE THE MXA SURVEY FOR A CHANCE TO WIN A SUNDAY MOTORS FLAT TRACKER
Don’t pass on this opportunity to win a free Sunday Motors bike! Completely fill out the annual “Reader Survey” below or click here. We’ll take your input to help improve both the web and monthly print content of Motocross Action. One lucky winner will be chosen at random to receive a bike from Sunday Motors. For a few minutes of your time, you’ll be entered into a drawing to win this Sunday Motors S 147 flat-track motorcycle. The S 147 model features a 150cc engine, Mikuni carburetor, 14-inch front/rear tire, stainless steel footpegs, bottom-mount brake caliper, YCF 310mm rear shock, 200mm rear disc, low-exhaust configuration system, and kill switch with leash. One winner will be chosen on July 6, 2021.
The MXA wrecking crew is busy year-round testing motorcycles and producing content for the magazine and website, but once a year we compile a “reader survey” to help us learn more about our loyal magazine/website readers and viewers. We take your input on the survey to help improve both the website and monthly print content coming from Motocross Action. This year, we are offering the super cool opportunity of winning a Sunday Motors 147 Flat Track motorcycle! Completely fill out the annual MXA Reader Survey by click here. One lucky winner will be chosen at random to receive a bike from Sunday Motors and you’ll be helping us out as we strive forward continuing to testing motorcycles, parts and gear. One winner will be chosen on July 6, 2021.
• 2021 MXA 250 FOUR-STROKE SHOOTOUT VIDEO: THE REAL DEAL OF ALL SEVEN BIKES
• FIRST LOOK! 2022 RIEJU OFF-ROAD BIKES
Rieju pulled out all the stops with the new MR Pro 250cc and 300cc models. Picking up where the wildly successful GasGas GP models left off in 2019, the MR Pro has a plethora of off-road goodies to please even the most discerning enduro rider. MR Pro comes stock with X-Trig ROCS triple clamp, DLC-coated KYB Forks, cooling fan, skid plate, Polisport clutch & ignition cover protectors, Goldspeed HD wheels & hubs, Renthal Twinwall bars, Renthal grips and competition gripper seat cover. Available in either 250cc or 300cc displacements. Retail price: $10,399
Rieju has taken everything needed to make a great enduro bike – robust two-stroke powerplant, supple suspension, and a well-mannered chassis – and combined it into the new MR 200cc, 250cc, and 300cc Racing models. With top-shelf components from Kayaba, Keihin, Nissin, Neken, FMF, and more, Rieju has built the MR Racing Series to be serious performers, all while boasting the best price on the market! Rieju has picked up where GasGas left off, and will continue to manufacture, market, and develop the Spanish Enduro bike. Available in either 200cc, 250cc or 300cc displacements. Retail price: $8899.
Rieju realizes that not everyone who rides is a serious racer. There are a lot of people out there don’t need every gizmo, gadget, and gimmick that money can buy; instead, they just want a simple, well-performing trail bike. The new MR Ranger is exactly what the doctor ordered. So, Rieju kept all the ingredients for a solid enduro platform – robust two-stroke powerplant, supple suspension, and a well-mannered chassis. Then they made it a bit lower so it is easier for the rider to touch the ground. Finally, they altered the tuning of the motor to make the power delivery more user friendly. The MR Ranger is the perfect affordable, two-stroke, trail bike for the masses. Available in 200cc or 300cc displacements. Retail price: $7999. For more info go to www.rieju-usa.com
• THE JULY 2021 ISSUE OF MXA IS WINGING ITS WAY TO SUBSCRIBERS? YOU DO SUBSCRIBE DON’T YOU? IT IS THE BEST DEAL IN THE SPORT
HOW TO SUBSCRIBE TO MXA SO THAT YOU NEVER MISS ANOTHER ISSUE, PLUS GET A $25 ROCKY MOUNTAIN GIFT CREDIT TO COVER YOUR COSTS
If you subscribe to MXA you can get the mag on your iPhone, iPad, Kindle or Android by going to the Apple Store, Amazon or Google Play or in a digital version. Even better you can subscribe to Motocross Action and get the awesome print edition delivered to your house by a uniformed employee of the U.S. Government. Did we mention the $25 gift card for any part you want from Rocky Mountain ATV/MX? You can call (800) 767-0345 or Click Here (or on the box at the bottom of this page) to subscribe.
• 2021 MXA 450 SHOOTOUT: TIME FOR THE LONGEST AND MOST DETAILED SHOOTOUT EVER
• 7TH ANNUAL KURT CASELLI MOTODOFFO EVENT ON JUNE 12
• 40% EARLY BIRD DISCOUNT ON 2021 DUBYA WORLD VET CHAMPIONSHIP ENTRIES — SAVE BIG MONEY BY ENTERING EARLY
To enter now go to www.glenhelen.com/register/
• 2021 AME SUMMERCROSS SATURDAY NIGHT RACING SCHEDULE
• JOIN MXA’S FLIPBOARD PAGE
• RENEW YOUR MXA SUB (PRINT & DIGITAL) AND GET A $25 ROCKY MOUNTAIN ATV-MC CREDIT
• MOTOCROSS REVIVAL 2021 VINTAGE RACE ON JUNE 6
For more information go to www.americanretrocross.org
• MXA TECH SPEC: 10 THINGS ABOUT THE 2021 KAWASAKI KX450 AND, BY PROXY, THE 2022 KX450
(1) Handlebars. Oh, happy day! The 2021 KX450 finally comes with oversized Renthal 839-bend Fatbars instead of 7/8-inch bars. We didn’t really hate the 2020 Kawasaki’s 7/8th handlebars, but with all the switches, buttons, levers, grips and crossbar clamps, the bars were running out of room. The big bars aren’t an issue, but Kawasaki’s wimpy, marshmallow-like rubber bar-mount inserts are. They twist and deform in even the smallest crashes. We replace them.
(2) Forks. The 2021 KX450 Showa forks are too soft. There are three simple solutions for slow riders, Vet riders and Pros. First, Kawasaki’s stock spring rate is 5.0 N/mm. It works for lightweight riders, Vet Novices and tracks without big jumps. Second, Vet riders can run a stock 5.0 spring in the right fork leg and Kawasaki’s optional 5.2 spring in the left fork leg. Voila! By math magic, that adds up to a stiffer 5.1 N/mm spring. Third, Pro riders can opt for Kawasaki’s optional 5.2 N/mm fork springs in both fork legs. Short of sending your KX450 forks out for a re-valve, this is the simplest fix.
(3) Clutch. The 2021 KX450 clutch has a 7mm-larger (146mm) clutch basket, which translates into 7mm-larger clutch plates. The clutch’s fiber segments are applied at an angle to move oil between the fiber and steel plates. Kawasaki got rid of its horrid judder spring system and replaced it with a full-size eighth plate. And, finally, Kawasaki replaced the five individual coil-type clutch springs with a Belleville washer, a la KTM and Husqvarna. Unlike with five separate coil springs, the large-diameter Belleville washer applies pressure to the clutch pack evenly around its circumference. The 2021 clutch is a big improvement.
(4) Maps. Kawasaki doesn’t have a push-button map switch. Instead, it uses plug-in couplers. The green plug-in is the stock KX450 map, and it delivers the best all-around power. The black coupler mellows out the complete rev range and gives up 1 to 2 horsepower from 6000 rpm all the way to 11,500 rpm. The white plug-in is the aggressive coupler. It produces the exact same horsepower from bottom to top as the stock green coupler but delivers the power with a crisper feel (and a little less over-rev). Kawasaki does offer a $700 mapping tool, but unless you are running a race team, it’s simpler to send your black box to Twisted Development to put special maps in for you. Yes, you have to pay for the service, but it isn’t $700.
(5) Rear brake rotor. In 2019, Kawasaki’s engineers put a jumbo-sized 250mm rotor on the 2019 KX450. The big rotor lacks modulation. It is too grabby. There is no brake, and then there is too much brake. We ground the brake pad’s leading and trailing edges down at a 45-degree angle which downsized the pads to ease their interaction with the rotor. We are surprised that Kawasaki’s engineers didn’t spec the smaller 240mm rotor they put on the 2021 KX250 and KX450X.
(6) Rear brake pedal. The rear brake pedal can be adjusted upward but not downward. To cure this, we hacksawed three threads off the bottom of the threaded master cylinder rod to give the pedal more downward freeplay; that way, a boot can touch it without locking up the brakes by accident.
(7) Brittle plastic. Kawasaki specs very brittle plastic. Roost cracks the fork guards. This is not a rare event it’s common. The front number plate cracks down the center, and the elongated arms of the radiator wings crack vertically. Order aftermarket plastic (especially the fork guards), because it is more durable.
(8) Chain roller. The lower chain roller—the one under the frame that keeps the chain from whipping as it spins off the countershaft sprocket—self-destructs quickly. Considering Kawasaki’s longterm problems with its rear chain guide, you should order TM Designworks parts on day one.
(9) Overheating. We run a 2.0 kg/cm2 Twin Air Ice Flow radiator cap to keep the radiator from spewing fluid.
(10) Update. What would it take to turn a 2020 Kawasaki KX450 into a 2021 KX450? Two things. First, you would need oversized handlebars and oversized bar mounts. Second, you would need to order a complete Hinson or Rekluse clutch to upgrade the weak 2020 KX450 clutch to Pro standards. What would it take to turn a 2021 KX450 into a 2022 KX450? Nothing.
• MXA PRODUCT SPOTLIGHT: 2021-2022 PRO CIRCUIT CRF450 CLUTCH SPRINGS & 2021 CRF250 WATER PUMP & HOSES
• 2021 NEBRASKA/IOWA GREAT PLAINS VINTAGE MOTOCROSS SCHEDULE: NEXT RACE ON JUNE 6
• WANNA RACE IN SOCAL? NEED TO RENT A BIKE? FIND A PLACE TO STAY? JUST CALL STAPO WHEN YOU CAN TRAVEL AGAIN
In his spare time, when he’s not testing with MXA, racing in a foreign country, going to Japan or helping many of his motocross buddies, MXA test rider Dennis Stapleton opens up his house, garage, bikes and mechanics to help riders who would like to come to SoCal on a motocross vacation—and now that the coronavirus pandemic is waning in the USA and the country is opening back up, foreign riders will be able to come to America to race, train and sightee again. You should plan ahead and make your reservations now for this upcoming Summer and Fall. Dennis offers full service to all of the Southern California tracks for racers or for play riders. Whether you want to rent a bike, move in for a week, race at Glen Helen or take motocross lessons—this is one-stop shopping. Just send them an email (Stapoknobbyshop@gmail.com). If you’d like to live the SoCal lifestyle for a day, a weekend, a week, a month or three months, visit Dennis Stapleton’s’ website at www.knobbyshopsouth.org for more details!
• OLD SCHOOL SCRAMBLES AT GLEN HELEN ON JUNE 26-27
• MXA YOUTUBE CHANNEL | HIT THAT SUBSCRIBE BUTTON
• MXA PRODUCT SPOTLIGHT: MOTOCROSS ACTION CASUAL WEAR
To see more MXA T-shirts and all the available colors Click Here