A29-year hiatus from the dirt bike and trials world is a long time, but Ossa has blasted back into the trials market with a big hammer: a direct-injected two-stroke. We had the pleasure of riding the
TR 280i for an afternoon, hopping and wheeling our way over every
rock we could find.
Just looking at the Ossa TR 280i causes most people’s heads to tilt
in a questioning manner. The cylinder is backwards and slanted
toward the back of the bike with the throttle body in the position
where most would expect the exhaust pipe to be. The gas tank isn’t
on top; it runs down the front from the head tube to the engine cradle,
making up an important part of the frame structure. The radiator sits
between the gas tank and the cylinder with an electric fan to keep the
air circulating. With the gas tank down in front, it helps keep the
weight low and also shields the engine and radiator from mud and
debris, keeping the engine area very clean.
We don’t need no stink’n’ carburetor
FUEL- INJECTS A TWO-STROKE SA
The Ossa is a super high-tech machine. When this technology finds its way onto
full-size dirt bikes, performance will increase, especially for trail riding or off-road
applications. They will have consistent air/fuel mixtures over a wider rpm range.