CB750 SOHC Dirt Tracker

The inspiration: ’84 Honda RS750

By the mid-1980s, the name Honda was synonymous with winning almost every style of racing in the world. There was one type of American racing that eluded Honda, though: dirt track.

American Honda began development of a 750 based on an XLV750R dual-sport bike sold in Europe, a model powered by a liquid-cooled 52-degree SOHC 742cc V-twin. The RS750 racer was entirely hand-built around this engine, from its massive oil sump to its long intake runners and super-wide swingarm able to accommodate a fat Goodyear tire.

The result? The RS750 won its first race at the 1983 Du Quoin Mile. The following year, Honda RS750 riders Bubba Shobert and the late Ricky Graham won six races each, with the Grand National Championship going to Graham by a single point over Shobert. The next three years were all Bubba’s though, as he took the title in 1985, 1986 and 1987, making it four in a row for Honda and its RS750. Honda officially departed in 1988, but Graham went on to win one more title with the RS750 in 1993 as a privateer, bringing Honda’s total of GNCs to five. Honda’s persistence, creativity and technical know-how made the RS750 a winner from the very start.

The build: CB750 Dirt Tracker

For our mean, lean dirt tracker we wanted the bare bones look of a race bike, no lights, no fuss, no show and all go.

We realized straight away that meant the stock oil bag had to go and Kent designed a slick inner fender/oil bag combo to replace it. We cut the stock ends of the oil lines on the motor side, had custom lines made and installed them to the oil tank with AN adapters. Looks slick!

The fuel tank and dirt track seat were then modified to suit the CB750 frame and we made more molds.

Stubby 4 into1 pipe, dirt track hub, sprocket and big rear disc, Grimeca caliper on custom hanger, Marzocchi shocks complete the package.

Watch the CB750 Dirt Tracker video
Airtech owner Kent Riches talks about the parts you need to build a CB750 dirt tracker replica.