I'll be using folding pedals on not only the Simplex and my Harley tribute but also other bikes even those without kick start lever interference. These things are great, even though they don't look like classic diamond blocks or Schwinn bow ties. They store better & are less apt to trip and old fool in the garage. Fold up the pedal when walking beside the bike with no interference or when in the saddle backing out of tight spaces, like my bike storage area. Motorized bikes with wide pedal levers can get the most benefit from these. I'm really pleased with this inexspensive accessory. Rick C.