Engine Size
Engine Type
Model Year
TWO-STROKE SHOOTOUT: PASHA RACING’S YAMAHA YZ150 VS. KTM 150SX
Pasha built up a Yamaha YZ150 two-stroke to go up against his proven KTM 150SX platform. Can a Yamaha compete with a KTM in the 125 class?
FIRST LOOK! 2026 KTM 50SX PEE-WEES, 65SX JUNIOR CYCLES & 85SX MINICYCLES
There is also a 2026 KTM 50SX Factory Edition model
FIRST LOOK! KTM’S FULL-SIZE TWO-STROKE MOTOCROSS LINE UP INCLUDES THE 125SX, 250SX & 300SX
KTM saved the two-stroke when Honda, Suzuki and Kawasaki dropped them, and Yamaha chose benign neglect for the YZ125 and YZ250.
FIRST LOOK! 2026 KTM 250SXF, 350SXF & 450SXF MODELS
Coming to an Authorized KTM dealer near you Starting in September of 2025
TEN YEARS AGO TODAY: MXA’S 250 TWO-STROKE SHOOTOUT: HUSKY, KTM & YAMAHA
The battle of the New Old Japanese Stock Versus the newest and Jazziest European concepts
TEN YEARS AGO TODAY: INSIDE SECRETS OF JODY WEISEL’S 2015 KTM 250SX
As a man who has tested motorcycles his whole life, I have a vast reservoir of worthless knowledge that can make any simple task more complicated.
FROM DIRT TO ASPHALT: MXA GOES FROM OFF-ROAD TO ON-ROAD ON THE 2025 KTM 450SMR SUPERMOTO
The KTM 450SMR is built off of the KTM 450SXF platform. It has the same engine, and for 2025 the Supermoto bike has the same frame as well
TEN YEARS AGO TODAY: WE RIDE RYAN DUNGEY’S 2015 CHAMPIONSHIP KTM 450SXF
“Race teams are always searching for ways to lessen unsprung weight and get their 450 bikes close to 220 pounds; KTM has the opposite problem, thanks to its Factory Edition 450SXF.”
THE EMLER/LAPORTE PROJECT: FMF’S 2018 KX500/KTM 250SX HYBRID
One important caveat in the dream-bike scenario is that the bike cannot have a 450cc four-stroke engine. Why would it? Four-strokes are readily available and thus not dreamy enough.
THE MID-SIZE KTM 380SX TWO-STROKE THAT COULD RUN WITH A YZ400
Why didn’t the unique 2000 KTM 380SX mid-size two-stroke catch on? Because it didn’t have 1999’s engine and suspension on it!
AUSTRIAN TWO-STROKE SHOWDOWN: TC125 VS. 150SX VS. TC250 VS. 300SX
if you’re a serious racer who is looking to be competitive, we recommend finding a carbureted 125 or 150. KTM and Husky last made carbureted two-strokes in 2022, and GasGas’ last carbureted two-stroke was produced in 2023
2025 MXA 85cc SHOOTOUT YAMAHA VS. HUSQVARNA VS. GASGAS VS. KAWASAKI VS. KTM
MXA has assembled an all-new MXA mini wrecking crew to help us with testing. With these test riders, we have now built enough momentum to conduct MXA’s 2025 85cc Shootout, our first mini-cycle shootout since 2014.
MXA RACE TEST: THE REAL TEST OF THE 2025 KTM 250SXF FACTORY EDITION
The 2025-1/2 KTM 250SXF Factory Edition isn’t a totally new KTM, but it does come with an impressive list of upgraded accessories, like an Akrapovic slip-on muffler, Wi-Fi connectivity unit, Power Parts Factory wheels, split triple clamps and exotic skid plate.
TEN YEARS AGO TODAY: MXA BUILDS A CYLINDER WORKS’ KTM 365SXF BIG BORE
Bigger isn’t always better, but when it comes to the KTM 350SXF it is!
TEN YEAR AGO TODAY: WE BUILD A FACTORY SERVICES WORKS 2015 KTM 350SXF
It revved to 15 grand, had factory WP suspension and bristled with KTM Power Parts components. The fly in the ointment was that the MXA testers were the last “regular people” to ever get a Factory Services works engine
PRO VS. NOVICE PERSPECTIVE: IS A FACTORY EDITION WORTH THE EXTRA MONEY?
Not everyone needs a full-blown pro bike and its $11,599 dollar price tag. Josh l and Josh ll try to decipher what they can and can’t live without
MXA VIDEO: WE TEST THE 2025-1/2 KTM 250SXF FACTORY EDITION
Josh Mosiman (pro) and Josh Holley (novice) give their opinions on whether the 250SXF Factory Edition is worth the extra dough
2015 MXA 250 FOUR-STROKE SHOOTOUT: IF YOU THINK KTM WON, YOU ARE AN IDIOT
The whys and wherefores of 2015 quarter-liter thumpers. What brand were you racing in 2015?
MXA’S FIVE BIKE 2025 85cc MINICYCLE SHOOTOUT
It was hard to do an 85cc shootout over the last 10 years because most of the 85cc minicycles were pushing 20 years old. Now, the R&D departments have updated them
FLASHBACK! THE 125 TWO-STROKE SHOOTOUT THAT SHOCKED THE MOTOCROSS INDUSTRY
Take your pick! Two are fuel injected, two are carbureted and one is by far the best 125 two-stroke in the 2023 class. Plus, a word of warning about the future.
TWO-STROKE TUESDAY: THE KTM 250SX THAT RAN LIKE A 125
What was wrong with the 2000 KTM 250SX engine? Just about everything
MXA BUYER’S GUIDE: 2025 WIDE WORLD OF FOUR-STROKES
Let’s get together and go comparison shopping for a 250cc, 350cc or 450cc four-stroke motocross bike
MXA VIDEO: WE TEST THE 2025 KTM 350SXF
What’s the 2025 KTM 350SXF like? Who’s it best for? Who do we recommend it to?
TWO-STROKE TUESDAY: COMPLETE TEST OF THE 2001 KTM 125SX
In 2001 the KTM 125SX made big strides to not only stay with the Japanese brands, but to beat them
TEN YEARS AGO TODAY! 2015 MXA 250 TWO-STROKE SHOOTOUT
If the powers-that-be allowed two- and four-strokes to compete at equal displacements in the Pro ranks—it would be a two-stroke world again.
MXA RACE TEST: THE REAL TEST OF THE 2025 KTM 450SXF
There were so many frame changes for 2025 that the whole nature of the 450SXF chassis changed from ultra-stiff to forgiving
WE RIDE AIDAN ZINGG’S LORETTA-WINNING KTM 112SX SUPERMINI
How to build your own Loretta Lynn Championship-winning replica — Plus video
TWO-STROKE TUESDAY: MYSTERIES OF 2005 KTM 250SX SOLVED
“The worst business decision that KTM ever made was to buy the Dutch-based WP suspension company”
FIRST LOOK! 2025-1/2 KTM 250SXF & 450SXF FACTORY EDITIONS
The new 250SXF and 450SXF Factory Editions will be available at dealers in January
TEN YEARS AGO TODAY! MXA’S 2015 125 TWO-STROKE SHOOTOUT
Is the obvious winner the fast one, the one with the most high-tech features or the fun one
MXA VIDEO: 2025 MXA 250 SHOOTOUT
Our biggest Shootout ever! We dive into the pros and cons, and then rank all eight of the major 250cc four-strokes
2025 MXA 450 FOUR-STROKE SHOOTOUT: SUZUKI, HONDA, GASGAS, KAWASAKI, HUSQVARNA, KTM & YAMAHA
We race-test bikes because that’s when the pros and cons of a motorcycle stand out the most. No matter how hard you try in practice, it’ll never replicate the intensity that comes out on race day
TEN YEARS AGO TODAY! WHAT IT WAS LIKE TO RACE THE 2015 KTM 450SXF
MXA wrecking crew test impression—an uplifting dose of the truth
TEN YEARS AGO TODAY! 2015 MXA 450 SHOOTOUT—THE NEEDY & THE DISGRUNTLED
CRF450 vs. YZ450F vs. KX450F vs. 450SXF vs. FC450 vs. RM-Z450
2025 MXA 450 SHOOTOUT VIDEO: HORSEPOWER, WEIGHT, PRICE & RANK
After months of riding, racing and testing, the results are in…
20 YEARS AGO TODAY! UNEARTHING THE EPIC 2004 250 TWO-STROKE SHOOTOUT
You may have owned one of these in your youth because the 2004 CR250, KX250, YZ250, 250SX & RM250 were in their glory 20 years ago
MXA RACE TEST: THE REAL TEST OF THE 2025 KTM 250SXF
Air forks can do some things that spring cartridge kits can’t do and vice versa. Best of all, air forks come on the bike—no need to spend $2000 to $7000 on aftermarket forks if you learn how to use the air properly.
MXA VIDEO: WE TEST THE 2025 KTM 150SX TWO-STROKE
After a two-year hiatus, the 150SX two-stroke is back! We shake down the new bike at Perris Raceway
MXA VIDEO: WE TEST AIDAN ZINGG’S LORETTA’S WINNING KTM SUPERMINI
Aidan Zingg’s Supermini has some custom work done to it that was inspired by the prototype 2025 model he helped KTM develop
RACING THE AMA 450 NATIONALS: 350SXF VS. 450SXF
It seemed like a brilliant idea at the time. Plus, it answered a lot of questions that people asked. I’s race the first AMA 450 National on a 350 and the second one on a 450. The problem is that the solution isn’t applicable to the AMA Nationals
FLASHBACK FRIDAY! DR. JEKYLL AND MR. HYDE CR500 VS. KX500 SHOOTOUT
We had the two top 500cc two-stroke builders make the wildest CR500 and KX500 known to man—with video of both bikes
MXA RACE TEST: THE REAL TEST OF THE 2024 KTM 250/300SX TWO-STROKES
The 250SX has a 66.4mm bore with a 72mm stroke, while the 300SX shares the same bottom end, but its bore and stroke measures at 72mm x 72mm. The bigger bore adds up to an extra 43cc to make the 300SX a 293cc.
MXA VIDEO: 2025 KTM 250SXF TESTED
We shake down the new and improved KTM 250SXF
MXA VIDEO: 2025 KTM 450SXF TESTED
The first 2025 model has rolled off the assembly line and into MXA’s stable
SIBLINGS SHOOTOUT: KTM 250SXF FACTORY EDITION VS. GASGAS MC250F FACTORY EDITION
The Factory Edition KTM 250SXF is $1200 more than the stock 2024 KTM 250SXF, and the GasGas MC250F Factory Edition is almost $2000 over the 2024 MC250F price. Still, the extra money buys you the much-improved frame and a healthy list of upgrades.
TEN YEARS AGO TODAY! MXA RIDES KEN ROCZEN’S RED BULL FACTORY KTM 450SXF
If someone gets to ride the champ’s bike — it might as well be MXA
MXA RACE TEST: THE REAL TEST OF THE 2024 KTM 125SX TWO-STROKE
If you’re looking for the best 125 to race the Amateur Nationals or 125 money classes, like the Pasha 125 Open races, the new-generation KTM 125SX isn’t ready for the big time yet
MXA RACE TEST: THE REAL TEST OF THE 2024-1/2 KTM 450SXF FACTORY EDITION
KTM’s engineers did a very good job of addressing the bad things about the 2024 production KTM 450SXF and enhancing the good stuff. And, yes this is the 2025 model.
TEN YEARS AGO TODAY! MXA’S 2014 KTM 125SX TWO-STROKE TEST
Thankfully KTM picked up the two-stroke gauntlet thrown down by Honda, Kawasaki and Suzuki and their efforts kept the two-stroke alive
2024 MXA 350 SHOOTOUT: GASGAS MC350F VS. HUSQVARNA FC350 VS. KTM 350SXF
If there are no cam, valve, piston, throttle body, fuel pump or crank differences between the FC350, MC350F and 350SXF. Why do all three engines run so differently on the track? The answer lies in four simple parts.
THE TRUE STORY OF JAMES STEWART’S 2004 FACTORY KX125 TWO-STROKE
In 2004 Kawasaki had just launched its all-new KX250F. The team offered the four-stroke to James, and he tried it during the pre-season. He decided to stay with the KX125 two-stroke instead
TEN YEARS AGO TODAY! WHAT IT WAS LIKE TO RIDE THE 2014 KTM 450SXF FOUR-STROKE
Much of the credit for the improvements goes to homegrown solutions, the ideas and concepts developed by local racers, hardcore KTM owners and the race teams, that KTM implemented into the 2014 KTM 450SXF.
MXA BUYER’S GUIDE TO THE WIDE WORLD OF 2024 FOUR-STROKES
With the 2025 models just peeking over the horizon, it’s a good chance to catch up on the bikes that are still on the showroom floors—the 2024 250, 350 & 450 four-strokes
MXA BUYER’S GUIDE: 2024 MINICYCLE BUYER’S GUIDE
If you are looking to launch your young one into the motocross world, move him up to a bigger bike or just looking for some backyard fun—look no further
MXA VIDEO: 2024-1/2 KTM 250SXF FACTORY EDITION TEST
The new KTM 250SXF comes with a new frame, new linkage, and new smartphone-compatible connectivity unit that allows you to adjust mapping, analyze your lap times and more
MXA RACE TEST: THE REAL TEST OF THE 2024 KTM 350SXF
The 2024 KTM 350SXF can be ridden flat out at high rpm like a 250 or torqued in the midrange like a 450.
TEN YEARS AGO TODAY! 2014 MXA 250 SHOOTOUT: CRF VS. KX-F VS. SXF VS. RM-Z VS. YZ-F
The MXA wrecking crew tested, documented, inspected, theorized and calculated every conceivable facet of the 250 four-stroke class for 2014. Your future bike now!
MXA VIDEO: 2024-1/2 KTM 450SXF FACTORY EDITION TEST
KTM isn’t waiting four years to address rider complaints about the latest bikes, they are going all out to increase chassis flex and comfort for 2025. We shake down next year’s ’25 KTM 450SXF
2024 MXA 450 FOUR-STROKE SHOOTOUT: SUZUKI, HONDA, GASGAS, KAWASAKI, HUSQVARNA, KTM & YAMAHA
Even though it is fun to fly to some far-away track to test a bike, it isn’t much of a test. MXA prefers to test bikes on the “dirt dyno.” What is the dirt dyno? It is the tracks that we have done a thousand laps on.
2024 MXA 250 FOUR-STROKE SHOOTOUT: THE WRITTEN WORD ON HOW ALL SEVEN BIKES RANK
We tested each bike in its stock form, and put 20 hours on each bike to, try to make them ultimately comparable to each other and to keep things equal we installed the same tires on each bike
