The New Accelerator (AD4) drive system offers an eccentric motion that creates an indirect relationship between the sprocket and the footboard, increasing the velocity of the pedal by shortening the length of the stroke. It is recommended for situations that require increased speed and sensitivity. The XF model includes an extended footboard.
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11 A Street Derry, NH 03038
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Monday through Friday: 9am-5pm Saturday: By Appointment Sunday: By Appointment