New Rayco RG55T-R - Tracked Stump Grinder The RG55T-R features a petrol Kubota engine, non-marking rubber tracks and a hydraulic backfill blade. Operators appreciate the large cutting dimensions as well as the visibility and protection of the swing-out control station. The expandable, non-marking rubber track undercarriage provides a stable, 50-inch (127-cm) wide, stance for cutting while retracting to 35 inches (88.9 cm) to squeeze through backyard gates. A hydraulic backfill blade saves time during clean up, letting you get on to the next job. The wireless remote control unit is sealed against dust, water, and other elements.