Browsing Tag

YFZ450

YAMAHA YFZ450 WITH 200 HORSEPOWER!

-- Hey wait, that's a 4-cylinder engine! -- Upon further review that's not a single cylinder engine. It's got 4 exhaust pipes and 4 intake tracks, so there's no way it can be a YFZ450 engine. Maybe we should read what James Masephol said about his quad in his Email to us. Well, it did indeed start out as a 2005 Yamaha YFZ450. However he took the engine out and installed the engine from a Yamaha R1 street bike. Those 1000cc 4-cylinder engines make about 180 horsepower stock, and James figures his gets more like 200 with the…

TWO-STROKE YFZ300

-- Checking out a great quad conversion -- Gerald Tramble is a Dirt Wheels reader who lives in France. Just like many of us in the USA, he has a strong passion for ATV racing. ATV motocross is very popular in Europe too. As expected, Yamaha's YFZ450 is a machine many Europeans choose to race. For Gerald though, he wanted his YFZ to have a two-stroke power plant. So, he set out to remove the 450 4-stroke engine and replace it with something else. KTM is a company that still puts two-stroke engines into a lot of its dirt…

PROJECT ATV: Duncan YFZ450R

Over the years we have tested many fully built machines that we have given rave reviews over and some we haven’t liked much at all. Since the new sport ATV world is stagnant at the moment, we have been building plenty of older machines that prove that they are still very worthy of competing. Our last build with Golden West Cycle and Duncan Racing turned out very well. The WORCS-style Honda 450R we built was great on the track, trail and in the dunes. Afterwards, we contacted Duncan to build us a full MX-style YFZ450R with…

HOW-TO: TOP SPEED TEST! Changing gearing and tire sizes

Yamaha’s YFZ450R has already won a couple of our shootouts. It handles great, gets around a track quickly and is fun to ride. However, when you get the machine away from the track, it is limited by its top speed. The YFZ450R and YFZ450X have nearly the slowest top speeds in their respective classes. We wanted to find out if we could get some more mph out of this machine with some simple bolt-on parts. Before we started, we installed a complete Dubach exhaust system. If you own a YFZ450R or any other sport quad, chances…

GEAR GRINDER: PRP Pro Steering Stabilizer

Precision Racing Products has a stable foot in the ATV world. They manufacture steering products, like anti-vibration bar clamps, but steering stabilizers are their specialty. We got our hands on their Pro Steering Stabilizer and installed it on our Dirt Wheels Yamaha YFZ450R. Whether you are out racing or riding recreationally, this stabilizer enhances handling and provides a safer ride. BEFORE STABILITY The handling on the YFZ450R works very well out of the box. The steering works better than the Honda TRX450R and…

TUESDAY TREAD: GBC XC Master Tire Test

Since the release of the X-Rex tire from GBC, we have always been impressed with the superior traction and durability of it for sport ATVs. Over the last year, we have been testing a set of the updated and renamed version of the X-Rex, the XC Master. This six-ply tire is available in rear sizes of 20x11.00-9, 22x11.00-9, 20x11.00-10 and 22x11.00-10, and front sizes of 21x7-10, 22x7-10 and 23x7-10. We used the 20x11-9 in the rear and 21x7-10 for the front and put countless hours and miles on motocross tracks, desert trails…

PRO-BUILT: THE NATIONAL CHAMP’S YFZ450R

Make your Yamaha rule the trees By the staff of Dirt Wheels It takes a special type of talent and drive to be a GNCC pro ATV champion and an even rarer sort of person to win multiple titles in a row. As you might imagine, winning those championships also takes a very special sort of YFZ450R. No matter what quad you ride, you can learn from a quad champion like Walker Fowler. His race quad is tuned and tricked 100 percent to suit his kind of racing. The mods are not just about performance; to win, you must…

BUYER’S GUIDE: 2016 Sport ATVs

Another year has passed, which means new and exciting ATV models have hit the market. Nowadays, these machines are coming with more features at better price points. Power steering is becoming a standard feature on a lot of new machines, which is a nice thing to have. The 4x4 market is gaining new models every year, which is a major plus; unfortunately, the sport-quad side of things is beginning to dwindle. There are less offerings of sport ATVs than we have seen in a long time. Yamaha’s Raptor 250 and 125 have become more…

YAMAHA’S GNCC ATV RACERS

WALKER FOWLER Starting off the 2016 Grand National Cross Country (GNCC) series at the top of the podium, N-Fab/Am Pro/Moto-XPerts Yamaha-sponsored Walker Fowler will defend his XC1 Pro ATV class title after securing the 2015 championship aboard his YFZ450R at only 22 years of age. Despite his youth, Fowler brings a decade of two and four-wheel experience to the podium, finishing every series no lower than second since his introduction to GNCC racing in the 2006 GNCC 90cc mod. class. COLE RICHARDSON…

YAMAHA’S 2016 ATVMX RACERS

Yamaha Motor Corp., USA, the best-selling Sport ATV brand in America, announces its 2016 Side-by-Side (SxS) and ATV racers Commanding the ATV MX effort for Yamaha in 2016 is four-time AMA Pro ATV champion Chad Wienen on his Wienen Motorsports/SSI YFZ450R. In 2015, Wienen became only the second racer in ATV MX history to win four back-to-back AMA Pro ATV MX championships, and the third in ATV MX history to be named a four-time champion. In 2016, already off to a winning start, Wienen looks to continue making…

PRODUCT TEST: Vanilla Gorilla Skid Plate

Protecting the underbelly of your ATV frame is one of the best investments you can do. Another added bonus to having a full-belly skid is that it helps you slide over rocks and other obstacles that you may traverse over without any damage to your machine. When choosing a full-belly skid you have many options, from aluminum to poly skids. We tested a skid plate from Vanilla Gorilla for the steel-framed YFZ450 and wanted to share our findings. Vanilla Gorilla also has rear sprocket guards, case savers, mud plugs and other…

ATV TEST: 2015 Yamaha YFZ450R Special Edition

Yamaha’s YFZ450R is one impressive sport ATV right out of the box. The engine is powerful, the suspension outperforms all other stock sport quad suspensions, and the overall performance of the machine is very satisfying. Without question, Yamaha continues to upgrade this quad each year, and the 2015 YFZ450R Special Edition was not left out of that process. The SE comes with a radical color combination, mating a red frame with black and white plastic. PLENTY OF PONIES From the factory, the YFZ450R has never left us…