These Vented Discs from AP Racing have been designed with the high demands of the Motorsport world in mind. Made from high quality materials, and using their wealth of knowledge and experienced gained through of a constant development programme, these discs are designed to perform at the highest level.With a huge range of sizes available, there are discs available for almost every Motorsport application (see the disc sizing information at the bottom of the page to make the correct selection). Each disc benefits from in-house testing on a dynomometer and track testing. Included in the range are both bolted and floating discs with varying face types. These types are detailed below.Disc Face TypesP = Plain - Mainly used on road applications where road noise is required.G4, 8, 12, 24 = Grooved (Straight, forward facing) - Traditional style straight grooves. The number signifies how many grooves are on the disc face.CG4, 8, 12, 24 = Curved Groove (Backward facing) - This is a standard groov