Bomag's current vibratory-tamper product offering in North America includes models BT60/4 and BT65/4, which both use a Honda GX100 four-cycle gasoline engine rated at 3.35 horsepower. The 135-pound BT60/4 and the 148-pound BT65/4 have a frequency range between 540 and 708 bpm, and a jumping height of 2.4 and 2.8 inches, respectively.