Bike Tests

Real World Advice On How To Make The Most Of Your CRF450; Stuff you can do to make your bike better

Real World Advice On How To Make The Most Of Your KTM 250SXF; Stuff you can do to make your bike better

With some reasonable modifications, a CR, YZ, SX, RM or KX motocross bike can be transformed into a desert racer, enduro bike, supermoto bike, dirt tracker, TT racer, sidecar racer or even a road racer; This is the dirt track version

You don't need to know this, but it's pretty cool stuff; even in the world of motocross, everything that could be invented has been invented; and turned around backwards

Real World Advice On How To Make The Most Of Your 2010 KTM 150SX; Stuff you can do to make your bike better

To say that we were elated by the performance of the Ice Works CRF250 engine would be a disservice to Chad Braun at XPR Racing; The power gains throughout the entire spread of the powerband were overwhelming.

New mapping, pipe changes, stronger gearbox and new timing for the RM-Z250; More compression, different valve timing and quieter exhaust for the 450

Honda made the same changes that the typical CRF450 owner made last year; That's good engineering; The CRF250 gets a new map, muffler and HPSD damper

We hate to say it, but the difference between a four-stroke and a two-stroke is night and day. A two-stroke wheelies, roosts and rockets around the track— A four-stroke feels more like driving a truck

This isn’t a cheap mod, but if you’re a serious racer, the GYTR preassembled unit is a no-brainer. As for the other GYTR treasures, we wouldn’t necessarily spring for the whole kit-and-kaboodle on our own bikes

MXA test rider John Basher tells his tale of love & hate with the green monster of motocross; Why he focused on everything but the engine

MXA test rider John Minert takes on the task of fine tuning MXA's 2010 Honda CRF450 (with a nod back to what worked in 2009)

MXA test rider Jody Weisel analyses (and tries to fix) the flaws of both the 2009 and 2010 KTM 450SXF: You'll be amazed at how thorough he was

It Is A Bike With Superb Handling, A Tremendous Powerband, And Vastly Improved Suspension. It Is The "Americanization" Of KTM

If Improvements To The 2010 Were Viewed As A Batting Average, Kawasaki Would Be Hitting About .500

Honda's Goal Was To Make The 2010 CRF450 "Easier To Ride," And It Is (Along With All That Means)

If You Don't Know What Yamaha Changed For 2010, Then You Aren't Getting Very Good Internet Reception In Your Cave In Tora Bora

Can You Overlook The Push From Center-Out In Corners Because Of The Amazing Engine?

Virtually Every Trait That The CRF450 Had, Good Or Bad, Is On Display On The 2010 Honda CRF250

The Yamaha YZ250F Has A New Perimeter Frame, New Gas Tank, New Geometry, New Plastic And New Look, But It Has The Same Old Engine

The 2010 KTM 250SXF Is A Solid Race Package That Makes The Most Top End Of All The 250s: It Does Need Some Mods

It Is So Much Fun To Ride That You'll Have Trouble Wiping The Smile Off Your Face

It Is A Fast, Lightweight And Agile Bike That is Surprisingly Competitive Against 450s And An Unfair Advantage Over 250Fs

Here is the question that everyone wants to know the answer to, but certain people don't want to hear: Which 250 motocrosser is better? Smoker or thumper?

JGR has complete control over their bikes: They only use aftermarket parts that they believe work at the highest level of performance. If JGR isn’t satisfied with the choices, while innumerable, they take matters into their own hands and make the parts

We asked Yamaha to consider building a YZ150 version of the YZ125. They refused, but offered us a kit to turn our YZ125 into a YZ144; Best of all, it fits all 2005 to 2010 Yamaha YZ125 models

Why think small when KTM makes a $799 bolt-on kit that broadens out the power of the 250SX two-stroke

Although the MXA wrecking crew likes to be spoiled by racing ultra-expensive motocross bikes that should be accompanied by a security guard, we tried to use restraint on Pro Circuit’s YZ450F engine

We wanted to take our trusty, but rusty 2007 Yamaha YZ250 two-stroke motocross bike and make it competitive in the 450 class; We called L.A. Sleeve and ordered their YZ270 engine kit

Two-tone color choices, weird and wild graphics, and a complete line of two-strokes highlights Yamaha's 2011 motocross bikes

The bike with a most compact motocross engine in the class goes high-tech with fuel injection and an Akrapovic exhaust for 2011

Real World Advice On How To Make The Most Of Your KTM 450SXF; Stuff you can do to make your bike better

There are two SXS engine kits offered: one for the 450SXF and one for the 250SXF. The MXA wrecking crew called our friendly local KTM dealer and ordered a complete KTM 250SXS engine kit

Real World Advice On How To Make The Most Of Your Yamaha YZ450F; Stuff you can do to make your bike better for racing

The hardest-working rider on the motocross circuit and his team have built a bike to keep him at the front; His bike is a mishmash of factory parts, creative upgrades and products that consumers can purchase

Real World Advice On How To Make The Most Of Your KX450F; Stuff you can do to make your bike better

MX-Tech did their motocross homework and built totally unique, speed-sensitive bottoming control system that works like a charm

Real World Advice On How To Make The Most Of Your CRF250; Stuff you can do to make your bike better

A $570 Mod That Fills In The Holes In The CRF250 Powerband; How To Make The Perfect Vet Class CRF250 For Motocross

Real World Advice On How To Make The Most Of Your KTM 250SXF; Stuff you can do to make your bike better

The 2010 Husqvarna is a mild-mannered 293.1cc enduro bike. And since it was a kit engine that had become a production engine, MXA’s goal was to turn it from a gentle trail bike into a full-blown racer

Real World Advice On How To Make The Most Of Your 2010 KX250F; Stuff you can do to make your bike better

Real World Advice On How To Make The Most Of Your Yamaha YZ250F; Stuff you can do to make your bike better

A few days after the KTM 350SXF was unveiled to the racing masses, we look at a proof-of-concept project bike that was a stalking horse for the Katoom Three-Five-Oh motocross machine

Jarrod's race bike had been a factory test bike—but, in one of those twists of the motorcycle business, it was a test bike that didn’t belong to Kawasaki. Nope. It was Yamaha’s test KX450F

Which 250 bike Is the best? We ride ’em, race ’em, wreck 'em, review 'em, rate 'em & read 'em in a few minutes time

Which 450 bike Is the best? We ride ’em, race ’em, wreck 'em, review 'em, rate 'em & you can read 'em in a few minutes time

Doctor D Knows More About The YZ450F Than Any Rider In The World; He Shares That Wisdom With MXA

Honda CRF450 vs. Yamaha YZ450F vs Kawasaki KX450F vs KTM 450SXF: If You Want The Specs, Read The Separate Tests; This Is To The Point

When You Mix All The Colors Together You Get A Rainbow (And One Winner)