EBC BMW F20 F21 2-Piece Riveted GD Slotted & Dimple Rear Brake Discs (M135i, M140i, M235i & M240i)Description NEW to the EBC Brakes range, making EBC the FIRST aftermarket manufacturer to offer replacements for BMW's new line of performance brake discs. In response to popular demand, EBC are pleased to add BMW's lightweight 2 piece riveted brake discs to the range. All discs are manufactured to exacting OE specification and use a high grade aluminium bell riveted to a G3000 cast iron alloy disc ring, resulting in a superior quality disc that is a