At his Roland Sands Design studio in La Palma, he’s taken a trio of Humpty Dumptied 450-cc dirt bikes and managed to reassemble them into 450 Super Singles. FOR THE RECORD: ...

Do you hate not being able to use your dirt bike, all winter long? Well, it turns out that there's a way of pressing it into service. Timbersled's Mountain Horse kit replaces a motorbike's front ...

The WR450F's suspension also received its fair share of attention during the bike's redesign. An all-new swing arm is tapered and more rigid than previous models.

Moto Guzzi V85TT Adventure Bike Review: Dirt, Italian Style. ... The rear swing arm is controlled by a single dual-stiffness spring with adjustable preload. Travel both front and rear is 6.7 inches.

With the first batch of 750 (an homage to the legendary XR750 dirt tracker ... steel frame attaches to a new hollow cast-aluminum swing arm, which is lighter and therefore more willing to change ...