Browsing Tag

Duncan Racing

Radical Yamaha Blaster Build!

Hunter Lovelace hails from Muskoka Canada and likes to build brilliant old school custom ATVs. He took one of his old prized machines, a 1988 Yamaha Blaster, and decided to rebuild it better than before for his younger brother. A lot of the parts that Hunter installed are near impossible to find these days and give it a custom look and feel from the 90's! The mods include: Motor: Duncan / Paul Turner ported, decked and polished motor, 175 PSI compression running on VP C12, Pyramid reed valve, factory 7 air box,…

RETURN OF THE HONDA TRX450R

-- Making this popular quad new again -- By the staff of Dirt Wheels, Photos by Pat "Ride in focus" Carrigan There is no doubt that Duncan Racing International (DRI) helps breed winners. Erin Simmons relies on the DRI team of Loren and Leonard Duncan to build and prep his AZOP championship-winning Honda TRX450R. Going fast in Grand Prix-style racing is no small feat. Having a quad ready to tackle multiple types of terrain is half the battle of competition at a pro level. Simmons is no slouch on a quad, either.…

Quadzilla vs. LT-R450: Duncan Racing Suzukis

-- 2-stroke vs. 4-stroke blast from the past -- Dune season is right around the corner. We know you’re itching for cooler weather so you can migrate back into the desert. Now is the time to polish that chrome, freshen that engine and get out your flags. To go along with this theme, we thought we would take our next old-versus-new quads out to the sand to see how they work. As with our last two-stroke versus four-stroke feature in the April 2011 issue, Duncan Racing prepared two beautiful samples of Suzuki’s finest ATV…

PROJECT YAMAHA YFZ450R

-- Built to beat Baja -- By the staff of Dirt Wheels We are fortunate enough to find ourselves around some of the most epic ATV builds in the business, and this Baja Yamaha YFZ450R is one for our record books. Pro-Am WORCS racer Ricardo Gonzalez wanted to switch gears and race the wilds of Baja Mexico with his team. They needed a machine built to handle a ton of abuse and last for hundreds of miles in the many different conditions that the course throws at the team. His long-time mechanic Kevin Avina was put to the…

PROJECT YAMAHA YFZ450R

-- Duncan Racing is at it again --  By the staff of Dirt Wheels, Photos by Pat Carrigan -- Duncan Racing International (DRI) is a company known for building great products and building up ATVs to handle the harshness of racing in all different disciplines. One well-known racing series on the West Coast is WORCS. The Grand Prix-style courses offer rough desert terrain, sand dunes, asphalt, motocross tracks and more to battle through, which means your quad must be tough to take the abuse and win. Mike…

25 YEARS AGO IN DIRT WHEELS

-- Remember the Mickey Thompson Grand Prix Series? -- It was quite a sight as you sat there watching from a comfortable seat. A pack of quads and riders lined up on the starting line, revving the engines of their finely tuned machines. Then, they'd all take off in a roar racing to the first turn. A little bumping and shoving might send a rider or two over the berm, but the rest would go sailing over jumps, flying across the whoops, roosting around the turns and fighting to be first to the finish line. This was the exciting…

DUNCAN RACING STEERING STABILIZER

-- Their GPR unit is the hot ticket for sport quads -- One of the things that can tire you out on a ride is the handlebars twitching back and forth. This is especially true with high-performance quads with wider A-arms and long travel suspension. As you're moving quickly down a trail the front tires are deflecting off of rocks, roots and ruts, which kicks the bars as you're trying to hang on. The best solution to that is a steering stabilizer. This is a small aluminum container device that has hydraulic fluid with a wiper…

TOP PROJECT ATVs

The Dirt Wheels crew will ride a box-stock quad for awhile, but then we start thinking about ways to improve its performance. Building project quads is a way of life for us. Here is a list of some that made it into the Dirt Wheels Project Quad Hall of Fame. Click on the links above each picture to go straight to the articles. PROJECT HONDA TRX400EX BUDGET BUILD PROJECT HONDA ATC 250R REBUILD PROJECT RAT ROD QUAD PROJECT RACE WALSHZILLA VS. CRF450R PROJECT HONDA TRX450R SAND SLINGER PROJECT DUNCAN SUZUKI…

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…

PROJECT ATV: Duncan Roll Designed Honda TRX250R Lobo

Before Honda came out with the TRX450R in 2004, the 1988–’89 250R remained the king of many circuits, anywhere from the tight woods of the GNCC series to the wide-open deserts of Baja. Since the 250R hadn’t been produced in decades, machines were far from stock. One of the best chassis builders of that time was Doug Roll. Roll, a racer himself, engineered a complete frame and suspension setup called the Lobo that some say was far superior to the competition. There was such high demand for the parts in the late ’90s,…

PROJECT ATV: Duncan Racing TRX450R Sand Slinger

Building a perfect duner is a matter of heritage, style and power preference. For years the Yamaha Banshee was the machine of choice for sheer power and its exhilarating ride. Oddly enough, with all the two-stroke resurrection we are seeing lately, the Banshee is not as popular as the Suzuki Quadzilla 500 or Honda 250R. The duner we are featuring this month was built around a newer Honda, the four-stroke TRX450R. Its owner, Thad Dirksen, let the legendary builder at Duncan Racing turn it into his perfect duner. When you…