YoYoJam's SpinFaktor, sometimes called the original SpinFaktor, was their first model with composite body construction, and their first high performance model. The first releases had no side caps, and had the logo information engraved on the rims. Pictured here is the second version without engraved rims, with a logo side cap on the sides.
The outside of the yo-yo is a rubber O-Ring, to protect the yo-yo when it touched the ground. While this technically had no response system, even this early model had the round molding holes around the bearing, which acted as a weak starburst response.
