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MXA’S WORLD TWO-STROKE CHAMPIONSHIP PRO CIRCUIT YAMAHA YZ125RV


On MXA’s 2020 Yamaha YZ125, we wanted a no-frills race bike. We only wanted to change the stuff that needed changing, work on the items that needed help and replace the parts that we knew could be better

MXA’S ULTIMATE YAMAHA YZ125: SMUGGLED IN FROM AMSTERDAM


This is the engine package that Yamaha’s sponsored riders use in European EMX 125 and the Yamaha Cup 125 races. Sounds great, doesn’t it? Sadly, it’s not sold in America

MXA RACE TEST: THE REAL TEST OF THE 2020 YAMAHA YZ125X CROSS-COUNTRY


Yamaha dabbles in the off-road market with the YZ125X. It can be used for motocross or cross-country, but compromises had to be made for both

MXA RETRO TEST: COMPLETE TEST OF THE 2005 YAMAHA YZ125


One of the best production smokers made

FIRST LOOK! 2021 YAMAHA TWO- & FOUR-STROKE MOTOCROSS MODELS


The big focus for the Yamaha engineers was updating the 2021 Yamaha YZ250F— here are the changes they made to all their motocross bikes

FIRST LOOK! 2021 YAMAHA OFF-ROAD & TRAIL MODELS


We snuck in a bunch of other 2021 Yamaha models while we were at it. Check them out!

MXA RACE TEST: THE REAL TEST OF THE 2020 YAMAHA YZ125 TWO-STROKE


The 2020 Yamaha YZ125 a great all-around dirt bike in spite of Yamaha’s backwards priorities

MXA RETRO TEST: WE RIDE THE LAST WORKS 125 TWO-STROKE


Brett Metcalfe’s Yamaha of Troy YZ125 was the last of the breed — and he was the last of the Mohicans

MXA’S 125 HOT-ROD PROJECT BIKE SHOOTOUT: THE THREE BEST TUNERS KICK OUT THE JAMS


Jamie Ellis, Dean Dickenson & Mitch Payton put our KTM, Husky & Yamaha 125s on remedial speed therapy — with video and something called “words”

FIRST RIDE ON THE 2020 YAMAHA YZ125 TWO-STROKE: A TIMELESS WORK OF ART


Could we complain? Yes, but we’re not going to

MXA’S 2004 125 TWO-STROKE SHOOTOUT


The MXA wrecking crew rounded up the five prime contenders and put them through their paces. Here is what we learned about the 2004 tiddlers

MXA’S 2020 KTM 125SX VS. 2020 YAMAHA YZ125 UNSHOOTOUT


Well, actually a “real shootout,” but of two machines that don’t have an actual class to race in—yet are very popular

MXA VIDEO: TWISTED DEVELOPMENTS’ YZ125 FROM MXA’S HOPPED-UP 125 SHOOTOUT


The first of three special 125s that we built as a unique shootout that tested not only the basic machines, but the approach of different tuners

WE RIDE THE LAST FACTORY 125cc TWO-STROKE


We test Brett Metcalfe’s 2005 Yamaha of Troy YZ125 when it was the only smoker left on the track

SWORDS OF THE SENIOR CITIZENS: WEAPONS OF BRADSHAW, VILLOPOTO, TEDESCO & PASTRANA


The personal two-stroke race bikes of the stars of the past — they could race anything they wanted, but they prefer two-strokes

MXA’S 2020 YAMAHA YZ125X FIRST RIDE VIDEO


We tell you what you need to know about the off-road tailored YZ125 two-stroke

EVERYTHING YOU NEED TO KNOW ABOUT THE 2019 SMOKERS


Looking for a smoker? You came to the right place. This is MXA’s performance guide to the 2019 two-strokes (which in most cases means the 2020 two-stroke models also)

FIRST LOOK! 2020 YAMAHA YZ250, YZ125, YZ85, YZ65 TWO-STROKE MODELS


2020 Yamaha smokers!

FIRST LOOK! 2020 YAMAHA OFF-ROAD YZ125X, YZ250X, YZ250FX, YZ450FX MODELS


Yamaha release the YZ125X two-stroke as an all-new model for their off-road lineup

MXA RACE TEST: 2019 YAMAHA YZ125 TWO-STROKE


The closest thing to a time machine that we can find. It takes you back to 2006 and brings you back to the present in a flick of the throttle

MXA’S 2006 YAMAHA YZ125 TEST


In 2005 the YZ125 sold 28 percent more bikes from the pervious year which allowed Yamaha to spend R&D money to make the 2006 YZ125 even better

BEST TWO-STROKE DIRT BIKES FROM 1980-2000


Did you own any of these 125cc or 250cc winners throughout the two decades?

ON RECORD | 2007 YAMAHA YZ125 | COMPLETE TEST


In 2007 the YZ125 earned the 125cc Bike of the Year award ten times in 11 years (losing only once to the KTM 125)

FIRST LOOK! 2019 YAMAHA YZ250, YZ125 & ALL-NEW YZ85


We have been waiting 17 years for a new Yamaha YZ85, and it is finally here! As for the YZ125 & YZ250, they are identical as the 2018 models, save for BNG

MXA FIRST RIDE VIDEO: 2018 YAMAHA YZ125 TWO-STROKE RAW


This is the raw sound of what a 2018 Yamaha YZ125 sounds like at full tilt at Glen Helen —without any big bikes in the way

MXA MOTOCROSS RACE TEST: 2018 YAMAHA YZ125 TWO-STROKE


We love this bike—the problem is, we don’t love racing this bike unless it is against other YZ125s or older smokers, but not KTM 125s

MXA’S YAMAHA YZ134 vs. YZ144 BIG-BORE CHALLENGE


Bigger displacement the better, right? Wrong

HOW TO BUILD A LOW-COST BUDGET SMOKER


Renovating a 2005 YZ125

MXA RACE TEST: 2017 YAMAHA YZ125 TWO-STROKE


By proxy, the 2018 too

2005 YZ125 MAKEOVER: ALL IT TOOK WAS 16 GRAND


If money was no object

MXA TEAM TESTED: FMF YAMAHA YZ125 PIPE AND SILENCERS


Two for one, but a dollar factor

TWO-STROKE SHOOTOUT: KTM 125SX vs. YAMAHA YZ125


If this were a boxing match, it would end with a knockout

FIRST LOOK: ALL OF THE 2017 YAMAHA’S FROM 85 TO 450


Refined, revised, updated, but not 100% new

2016 YAMAHA YZ125 TWO-STROKE RACE TEST: EVERYTHING YOU NEED TO KNOW


Real tests for real people

MXA TWO-STROKE FILES: JOHN BASHER’S TRICK YAMAHA YZ125


When money is no object, Basher is at his best

THEY’RE HERE! FIRST LOOK AT THE 2016 YAMAHAS


Yes, the Screaming Yellow Zonkers are back, also available in blue too

MXA’S 2015 125 TWO-STROKE SHOOTOUT: HUSKY, KTM, YAMAHA


The obvious winner of the fun factor

TWO-STROKE REVIVAL! 2015 YAMAHA YZ125 ($6390) & YZ250 ($7290)


The tech, specs & new look — plus video

JOHN BASHER’S YAMAHA YZ125 LOVE STORY


Man loves YZ125, loses YZ125, finds it again — love resumes

MXA TEST: 2014 YAMAHA YZ125 TWO-STROKE


Why does our brand-new 2014 Yamaha YZ125 look eight years old?

YAMAHA STILL BELIEVES IN TWO-STROKES: SEE THE 2014 YZ125, YZ250 & YZ85 HERE


2014 YAMAHA YZ250 The 249cc, liquid-cooled 2-stroke engine comes with reed-valve induction, 66.4 x 72.0mm bore and stroke and a Keihin PWK38 carb. The 48mm Kayaba SSS forks feature the Speed-Sensitive System that uses piston speed to control damping force for super-precise handling and a smooth ride. Although essentially unchanged from the 2013 model, the 2014 still offers all the best that Yamaha’s two-stroke heritage has to offer. 2014 YAMAHA YZ125 The 124cc, liquid-cooled 2-stroke engine comes with r…

FIRST LOOK AT THE 2013 YAMAHA YZ85, YZ125, YZ250 YZ250F, YZ450F, WR250F, WR450F & XT250


2013 Yamaha YZ250F: If you were expecting an all-new fuel-injected 250cc four-stroke engine, join the club. One thing we do know, the 39mm Keihin-carbureted YZ250F runs better than several EFI 250’s from the other brands. 2013 Yamaha YZ250F: Available in both white and blue models the 2013 Yamaha YZ250F features Kayaba SSS suspension, black Excel rims, remote oil tank and two-tone plastic. 2013 Yamaha YZ450F: The most noticeable cosmetic change on the 2013 YZ450F is the white rear fender…and if you lo…

MXA’S 2012 YAMAHA YZ125 MOTOCROSS TEST: A BIKE THAT MAKES DIRT BIKING LESS EXPENSIVE, MORE FUN & MORE INCLUSIVE


Q: FIRST AND FOREMOST, IS THE 2012 YZ125 BETTER THAN THE 2011 YZ125? A: No. The 2012 YZ125 might as well have been sub-contracted out to Xerox because it is a carbon copy of the 2011 model, which was the same as the 2010 model. The 2012 YZ125’s original design concept goes back to the 2006 model, and although it has undergone numerous modifications over the past seven years, its genes remain the same. Q: IS THE 2012 YZ125 FASTER THAN THE 2011 YZ125? A: If it is, call the Paranormal Activities Bureau and…

TWO-STROKE TEST: MXA BUILDS A YAMAHA YZ144 BIG-BORE MOTOCROSS BIKE


The plight of the Yamaha YZ125 brings a tear to the eye of every MXA test rider. For 14 out of the last 17 years, the YZ125 has been the best 125cc motocross bike made. Unfortunately, with the advent of the 250cc four-stroke, the YZ125 has been pushed to the brink of extinction. Six years ago, we asked Yamaha to consider building a 150cc version of the YZ125. Yamaha refused on the grounds that the distributors in other countries would not sign off on the YZ150 project. KTM, which just happens to be in o…

2011 YAMAHA YZ125 MOTOCROSS TEST: THE $6000 BIKE THAT THE SPORT NEEDS MORE TODAY THAN IT EVER DID


Q: FIRST AND FOREMOST, IS THE 2011 YAMAHA YZ125 BETTER THAN THE 2010 YZ125? A: No. Q: HOW OLD IS THE TECHNOLOGY OF THE 2011 YZ125, AND IS IT OUTDATED? A: It’s old, but the amazing technology is far from outdated. Yamaha was the first manufacturer to achieve success with their power valve system. The YPVS (Yamaha Power Valve System) transformed pipey, top-end-only two-strokes into manageable bikes. Fast forward to 2005?which was the last all-new YZ125, which the 2011 is still based on. For 2005, the bike…

MXA MOTOCROSS 125 SHOOTOUT: 2011 KTM 150SX VS. 2011 YAMAHA YZ125 TWO-STROKE


2011 KTM 1250SX. Both the KTM 150SX and Yamaha YZ125 originated from the classic two-stroke gene pool, but thanks to gene splicing, borrowed technology and constant revisions, both machines have evolved into the fulfillment of the two-stroke promise. And, unlike most bikes that are compared to each other, these two bikes have grown more apart over the last few years?they are not ?clonemobiles,? and it is possible that they aren?t even justly compared. The $6299 KTM 150SX and $6250 YZ125 may owe their ge…

2011 YAMAHA YZ125 TEST: ARE YOU LOOKING FOR A MOTOCROSS BIKE THAT CAUSES YOU TO GIGGLE WHILE GOING WIDE OPEN? THIS IS IT


Q: FIRST AND FOREMOST, IS THE NEWEST YZ125 BETTER THAN THE PREVIOUS YZ125? A: No. It is the product of Xerox engineering. Q: WHAT ARE THE MAJOR CHANGES THAT YAMAHA MADE TO THE LATEST YZ125? A: There are none. The graphics on the gas tank are different?if that counts as a major change. Q: IS THE NEW YZ125 FASTER THAN THE OLDER MODELS? A: This is MXA ‘s 2010 Yamaha YZ125 test, but the info in this test in applicable to the 2009 and 2011 models. Is the 2010 YZ125 faster than last year’s YZ125 or next year’…

FIRST LOOK! THE 2011 YAMAHA MOTOCROSS BIKES; YZ450F, YZ250F, YZ250, YZ125 & YZ85


Yamaha has not officially released photo of the 2011 Yamaha motocross bikes, but MXA ‘s buddies in England were kind enough to send us the photos that they received from the European distributor. Don’t get us wrong, these are not official Yamaha USA photos, but they are the real deal. All the tech info is to the Euro spec. 2011 YZ450F: Red and white. The left side of the 2011 YZ450F. The right side of the 2011 YZ450F. 2011 YZ450F: Blue and white (with the exception of the red & white YZ450 all the A…

2010 YAMAHA TWO-STROKES:


2010 YAMAHA YZ250 2010 YAMAHA YZ125 2010 YAMAHA YZ85

2009 Yamaha YZ125 Two-Stroke; Suspension Settings, Jetting Specs, Likes & Dislikes, Plus Much More


MXA RACE TEST: THE NEW 2009 YZ125 MAY WELL BE THE LAST OF ITS KIND & THE BEST OF ITS KIND    Have you ever heard the phrase, ?Hoisted by their own petard?? Nothing better defines the 2009 Yamaha YZ125 than that archaic phrase. Why? And what does it mean? A petard was a military weapon that was used to blow holes in the walls of fortresses. The metallic device was filled with gun powder and used much in the same way as the modern ‘shaped charge? to direct force in the desired direction. It …

Yamaha’s 2009 YZ250 and YZ125 Intro: The MXA Wrecking Crew Meets The Wolfman


TESTING THE ONLY JAPANESE BUILT TWO-STROKES ON A VERY SPECIAL TRACK Yamaha is the last Japanese manufacturer to make 125cc and 250cc two-strokes for the American market. It is fact that they are proud of. Yamaha is quick to point out that their two-strokes share all the same components as their four-strokes, are ten pounds lighter, easier to maintain, fun to ride and retail for up to $750 less than their comparable four-stroke brethren. John Minert roosts his way under the awning of an enormous oak tree…

2009 YAMAHA YZ125 SPECS


Key Features: A light, aluminum frame housing an amazingly light and compact engine results in an awesome power-to-weight ratio. Ready to race out of the crate, complete with a ProTaper aluminum handlebar, titanium footpegs and gripper seat. A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class. New for 2009: Dunlop D742FA front tire has an innovative knob pattern for excellent grip and handling. New seat cover has great grip and more durab…

2008 RACE TEST YAMAHA YZ125


There will come a time when every manufacturer, race promoter, rider and AMA functionary will rue the day that the AMA allowed 250cc four-strokes to compete against 125cc two-strokes (not to mention the stupid unleaded gas rule that administered the coup de grace to the 125 two-stroke on the AMA circuit). We will all miss the 125 two-stroke when it’s gone. And, unless you are a uniquely independent individual, you probably have no intention of buying a 2008 Yamaha YZ125. You may think that the MXA wreck…

2007 YAMAHAS


YZ450F New for 2007: Replacing the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity, and the use of lighter outer fork tubes; lighter wheel rims and light wave-type brake rotors add up to super-accurate, super-responsive steering. Increasing the length of the rear shock by 1.5mm further sharpens handling. Replacing steel damping adjusters with aluminum ones removes even more weight from the four-way adjustable, titanium-sprung rear suspension unit. A more…

ARE YOU GETTING THE MOST OUT OF YOUR 2004 BIKE?


Get Motocross Action’s simple setup tips for your 2004 motocross bikes

2004 YAMAHA YZ125


We normally ignore doomsday predictions. They never come true. Do you remember the Y2K hysteria, or the Nostradamus hype? There is, however, a new end-of-the-world scare! It is the much-hyped extinction of the two-stroke. Are we scared? No. Why not? Because no self-respecting motocross racer would move from a two-stroke to a four-stroke unless it was better. Two-strokes will thrive as long as they are competitive. And, when the day comes that they aren’t up to snuff, we won’t shed a tear if they join th…

YAMAHA 125 INTRO-AN ONLOOKERS PERSPECTIVE


By John Basher As Tim Olson and I were cruising down the highway towards Glen Helen raceway on a beautiful Tuesday morning, I slowly began to see the track in the distance creep up on the horizon. It wasn’t my first time visiting the huge hills of Glen Helen, but today was different. I immediately discounted that the weather was different, simply because the weather is ever sunny at San Bernardino (or seems like it). I glanced in the rear view mirror, and then I remembered. With Tim at the wheel and myse…

2004 YAMAHA PHOTOS AND SPECS-


2004 YAMAHA YZ125 What’s new on the 04 YZ125? 1. The shape of the scavenging port and exhaust port is changed (the timing is also revised) 2. The setting on the YPVS governor spring is changed for better acceleration in the low to mid. 3. The carb setting at the bypass port is changed. 4. The exhaust pipe is increased in overall length by 5mm, mostly at the head pipe (not on European models). 6. The diameter of the stinger is increased 1.6mm (in front of the silencer) 7. The shift pedal is downsized 9mm…

2003 YAMAHA YZs


YZ85 YZ125 YZ250 YZ250F YZ450

HOW TO GET YAMAHA SECRET YZ125 NEEDLE


The MXA test crew has used a special needle in its 2002 YZ125. The original MXA needle was a works part that was hand made. During testing, the works needle performed better than the stock YZ125 needle. Unfortunately, the hand-made needle was not available through Yamaha dealers. Yamaha’s engineering department, urged on by their own in house test results, decided to work overtime to make the secret needle available to American racers. They ran a test program, verified the results and had Yamaha of Japa…