Through spacers, 5 mm thick on each side.

Product description:

• material - duralumin PA6
• spacer thickness - 5 mm on each side (10 mm per axle)
• hole diameter - 72.6 mm
• Hole dimension - 5x120mm
• bolts:
  • Bolt M12x1.25 30mm Cone
  • Bolt M12x1.5 Ball 30mm
  • Bolt M12x1.5 30mm Cone
  • Bolt M14x1.5 30mm Cone
• bolt hardness 10.9
• Fits:
  • Series 1 - E82, E87, E88
  • Series 3 - E36, E46, E90, E91, E92, E93, F30
  • Series 5 - E28, E34, E60, E61
  • Series 6 - E35
  • Series 7 - E32
  • BMW Z3
  • BMW Z4
  • BMW Z8