• 61600: Extension set 1, 2 curves 1/90 grad 2 straights 342mm, 2 lane change sections

  • 61601: Extension set 2, 4 straights 342mm, 2lane change sections, 1 narrow section, 2fly over, 2 straights 114mm

  • 61614: Extension set 3, 8 straights 342mm, 4 curves 1/45 grad, 4 high banked curves 1/45 grad