EBC USR Sport Slotted Brake Rotors 11.0 Inch Rear 3 Mazdaspeed 07-13 2.3L MZR USR1315

Vehicle Applications:

Mazda 3 GT 2004-2006 2.3 11.0 in. Dia.; Set of Two
Mazda 3 GT 2010-2013 2.5 11.0 in. Dia.; Set of Two
Mazda 3 Mazdaspeed 2010-2013 2.3 11.0 in. Dia.; Set of Two
Mazda 3 Mazdaspeed 2007-2009 2.3 MZR 11.0 in. Dia.; Set of Two
Mazda 3 S 2004-2006 2.3 11.0 in. Dia.; Set of Two
Mazda 3 S 2007-2009 2.3 11.0 in. Dia.; Set of Two
Mazda 3 S 2010-2013 2.5 11.0 in. Dia.; Set of Two
Mazda 3 SP23 2005 2.3 11.0 in. Dia.; Set of Two
Mazda 3 Sport GS 2011 2.5 11.0 in. Dia.; Set of Two
Mazda 3 Sport GT 2011 2.5 11.0 in. Dia.; Set of Two

New Silver Grey Geomet Coated Finish

EBC brakes now produces all of its GD series and USR discs with a new long-lasting corrosion-resistant Silver Grey surface coating. EBC switched in early 2023 from the black Geomet coating to the new silver grey Geomet style coating color.

USR Slotted Rotors

Choose from EBC plain non drilled rotors or sport rotors in two choices – wide aperture GD Sport Rotors series for cooler running or new super silent Ultimax USR slotted rotor series. All EBC rotors including USR Slotted Rotors are British made and are precision machined in the UK. Rotors are made from high quality grey iron to exacting standards and undergo extensive testing and rigorous quality control. Slotted rotors can significantly improve brake performance and longevity when used with a matching high friction brake pad set. Having sold hundreds of thousands of brake kits EBC Brakes feel confident their approach is as perfect as it gets.

We have the opinion that slotted rotors have been “Over sold” by certain marketplace participants, and our findings are that a slotted rotor will only give benefits if used with a pad that compensates for its reduced surface area.

EBC recommends the use of a premium pad such as Redstuff brake pads or Yellowstuff brake pads to complement your new USR slotted rotors, which will provide the optimum balance of life and performance.

All EBC sport rotors are final machined in the UK and many of the castings used in EBC rotors are also UK made. In manufacture the EBC rotors are 100% runout inspected to a maximum of 0.1 mm total indiocator reading or 0.004 inches and should be runout checked after install on your car. If your car develops brake vibration after 3000-4000 miles this will be due entirely to a runout issue which happens on one in seven road vehicles. Most OEM builders Pro Cut turn rotors from new at install to avoid this problem and EBC reccomends highly the Pro Cut on car brake lathes at your disc install.