Sensor ring front ABS/DTC, magnetic steel nickel plated, hole circle 86mm, 6 holes d=8.2mm, fits OZ and Marchesini rims with hole circle 86mm, for rotor mounting, to be used with ABS sensor bracket 3631A056A00-01.This sensor ring is needed to fit with Racing brake discs on aluminum or magnesium racing wheels OZ or Marchesini with hole circle 86mm. Weight: 0.06 kg. Modification Requirements: When using this segmented DTC ring it is necessary to adjust the position of the sensor