Duncan Racing

When it comes to sport quads, it’s been said by many industry insiders that Roll Design’s Lobo is the best of the best, especially for West Coast racing. When you consider that very few new Lobos are manufactured today, the appeal of the…
Read More...

So you're buying a used sport quad and the seller doesn't have much information about the engine. Is it stock? Oversized displacement? Has it been ported? Does it have a high-compression piston?
Read More...

Darryl Smith has always been a motorcycle guy, but the rest of his family were Banshee folks. It was only natural that he pick up a 2006 Banshee to join in. Miles and hours of dune fun slinging sand with a twin-cylinder, two-stroke sport…
Read More...

Here's something most of you have probably never seen, or even knew existed. We've all heard about Paul Turner Racing Racing Engines and exhaust systems, especially those of us that raced Honda TRX250Rs 20-plus years ago, but did you know…
Read More...

A Duncan Racing International, Inc. customer chose to unite two legends—Duncan Racing and a 1987 Suzuki LT-500R QuadRacer. The LT-500R moniker is all but lost in common vernacular; the machine has simply become known as “Quadzilla.”
Read More...

In the June 1993 issue of Dirt Wheels, we took a look at the MTGP champ and the machine he rode. Mark Ehrhardt allowed us to check out his Honda TRX250R that was built by Duncan Racing, which is still building fast quads today.
Read More...

One of the best chassis builders is Doug Roll, a racer himself, who engineered a complete frame and suspension setup called the Lobo that some say is far superior to the competition.
Read More...

This article features a custom-built Yamaha Banshee by Duncan Racing International, designed specifically for off-road trail riding. The machine has been extensively modified with new suspension, controls, and carbon fiber finish plastic.
Read More...

The Yamaha Raptor 250 was one of the top five selling sport ATVs in 2008. With its low retail cost of $4199, it was popular not only with youth riders, but adults too!  Despite only having a 249cc air-cooled powerplant, the little Raptor…
Read More...

Duncan Racing helps a man dream By the staff of Dirt Wheels, Photos by Pat Carrigan Danny Franco was happy to explain why he contracted Duncan Racing International to get his 1987 Suzuki LT500R “Quadzilla” Quadracer underway: “I’m a…
Read More...

We take you back in time to give you the inside scoop of the Duncan Racing YFZ450
Read More...