Pair of drilled-grooved 273 x 18mm OE replacement rear brake discs. Suitable for Sierra Cosworth 4x4, 2x4 and Escort ΜΚ5 RS Cosworth. All TAROX disks are made from special iron cast. Thermal and anti-corrosion treatment is a standard procedure for all Tarox disks to eliminate bending and corrosion. The 40 grooves (each side) of G88 type improve ventilation during braking. The result is an increadible and smooth braking.