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

TWO-STROKE TUESDAY: WE RIDE 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.

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

FLASHBACK FRIDAY! THE MID-SIZE KTM 380SX TWO-STROKE

Was the KTM 380SX faster than the KX500 and CR500 of their times? Yes and no. Why didn’t the unique KTM 380SX mid-size two-stroke catch on? It should have

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

TEN YEARS AGO TODAY! MXA’S COMPLETE 2014 KTM 250SX TWO-STROKE TEST

The King of 250 Two-Strokes had no rivals for the throne in 2014

MXA VIDEO: WE TEST THE 2024 KTM 450SXF

The 2024 models are officially here! Our first “Tested” video of the year comes on the bike that finished second in the 2023 MXA 450 Shootout

FLASHBACK! A MOTOCROSSER ON STRANGE TERRAIN WITH DARYL ECKLUND

MXA’s Daryl Ecklund takes KTM’s RC390 Sport Bike to a road race track to test it and himself

FLASHBACK! THE FASTEST KTM WE EVER TESTED

The MXA wrecking crew matches its motocross skill against the KTM X-Bow

2024 MXA 250 FOUR-STROKE SHOOTOUT VIDEO

You may not like our opinion, but you have to respect it. We ride, race, and test all seven of the 2024 250cc four-strokes to give you the pros and cons of each new bike

FIRST LOOK! 2024-1/2 KTM 250SXF/450SXF FACTORY EDITIONS

There here! Just in time for Chase Sexton, Aaron Plessinger and the rest of the men in orange to spin a few laps before A1

2023 MOTOCROSS ACTION’S 450 SHOOTOUT VIDEO

This is the one you should read! We compare the CRF450, YZ450F, 450SXF, KX450, FC450, RM-Z450, and MC450F against each other in the most highly anticipated video of the year

MXA RETRO TEST: WE RIDE ANDREW SHORT’S 2011 WORKS KTM 350SXF

A stock 2011 KTM 350SXF weighs 237 pounds. Andrew Short’s 350SXF weighed 222.8 pounds. That is a 14-pound weight loss

MXA VIDEO: WE TEST THE 2024 KTM 350SXF

This just might be the best all-around motocross bike on the market today. Yes, it’s expensive. Yes, it requires some break-in time. Yes, you have to have air fork know-how. Yes, it is incredible to ride!

MXA RACE TEST: THE REAL TEST OF THE 2024 KTM 250SXF

There has to be a reason why the KTM 250SX keeps winning the MXA Shootout— that’s because it is a step above every other bike in the class

SEVEN DAYS IN MATTIGHOFEN WITH THE MXA WRECKING CREW

Josh, Josh, Dennis and Trevor went to the massive KTM factory complex in Mattighofen, Austria, and got to meet, greet and race with the KTM employees. It was a blast—See the Trevor Nelson video at the end

MXA’S MAMMOTH MOUNTAIN KTM 65SX SPECIAL

Building a KTM 65SX to challenge the unique conditions, high altitude and jetting issue of Mammoth Mountain

MXA VIDEO: WE TEST THE 2024 KTM 300SX FUEL-INJECTED TWO-STROKE

The 300SX is fuel-injected, has an electric starter, hits 55-horsepower, and is ultra fun to ride

MXA RETRO TEST: COMPLETE TEST OF THE 2001 KTM 250SX

Let’s go back 23 years and see what the 2001 KTM 250SX two-stroke was like—the great, the good, the bad and the awful

MXA RETRO TEST: WE RIDE GRANT LANGSTON’S 2001 KTM 125SX

What dId Langston’s AMA 125 National bike have in common with his works bike from Europe? Not much, just the pipe, silencer and transmission.

TEN YEARS AGO TODAY! COMPLETE TEST OF THE 2013 KTM 350SXF

MXA was of the opinion that KTM had sandbagged the first 350SXF. If the 2011 KTM 350SXF had run as well as the 2013 350SXF, there would be a lot more 350cc bikes on the racetracks today

MXA RACE TEST: THE REAL TEST OF THE 2024 KTM 450SXF

The 2024 KTM 450SXF is a thing of beauty. It has a luscious powerband, and even though it makes almost 60 horsepower, it is super manageable and handles like a dream. No oversteer, no understeer; it is super accurate in all situations.

MXA VIDEO: 2024 KTM 250SXF TESTED

The KTM 250SXF won our shootout last year, but that doesn’t mean it’s perfect. We share the pros and cons on the 2024 model in this video

MXA VIDEO: INSIDE OUR 2023 KTM 65SX TWO-STROKE RACE BIKE

We sent our new mini test rider, Nixyn D’Errico, to Mammoth with a full-blown 65cc race bike. His Dad, Ryan D’Errico gives us the low down on this mini race bike