EBC USR Slotted Brake Rotors

Choose from EBC plain non drilled rotors or sport rotors in two choices – wide aperture GD Sport Rotors
series for cooler running or newsuper silent Ultimax USR slotted rotor series.

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Very good customer service called me to say the option I had selected wasn’t available but they had another option as I was in a rush that was a big help and they came the next day as well! Plus the products are great no complaints at all thank you ebc uk

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About Slotted Rotors

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 are of 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.

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Ultra Quiet Slotted Brake Rotors

Manufactured using premium disc blanks mentioned above, the narrower multi slot design of the Ultimax sport rotor and the progressive angle at which the slots are machined creates a quiet running sport rotor that still has benefits of removing gas, dirt, water and debris and maintaining parallel pad wear.

EBC have always been honest enough to say that the biggest advantage of slotted rotors is the fact that they promote flat and parallel pad wear rather than allowing ridges to develop on pads and rotors which is typical of “drilled only” sport rotors. By preventing these ridges brakes stay more consistent throughout pad and rotor wear life (simple physics!).

Why Slotted! The Benefit?

The benefits of degassing and promoting flat and smooth pad wear are a clear plus in favour of sport rotors but the trick is to opt for a matched set of brakes and not to just expect a slotted rotor to improve braking on its own. . When used with higher friction EBC Redstuff, Greenstuff or Yellowstuff brake pads these rotors will deliver better brakes.

The different slot pattern of the EBC USR Series has made this range a popular choice for drivers who desire improved sport braking with minimal air noise from the slots. The finer slot pattern is what makes these sport rotors more silent in operation whilst still offering pad degassing and removing dirt dust water and debris from the braking area.

Statement Of Quality

There are two main reasons for brake vibration. The first is steering geometry issues
and the second is installation or hub run-out issues.

Geometry Issues

One in seven cars suffers geometry problems during its life that can affect steering and cause brake vibration. These are not a product quality issue. These can happen by simply nudging a kerb or by driving over a pothole. EBC is not alone in recognising this problem but is the only brake supplier on the planet prepared to offer diagnosis and a solution.

Installation or hub run-out issues

These cause what is known as DTY. The videos below show how to correct for brake vibration caused by DTY (disc thickness variation). DTY develops in a car after 3000-4000 miles caused by runout built in to the car or due to incorrect alignment of the rotors at install. This is quite a common fault on modern cars and many cars require this at every rotor change. Drivers also confuse hub distortion with a rotor quality issue but in 99% of cases the DTY is a car problem, not a rotor quality problem. You can replace the rotors as many times as you like trying to solve vibration and the problem will only go away for a few thousand miles and then return. This means you have purchased new rotors in good faith but the problem is not solved and will not go away permanently until you perform this procedure. After this skimming of the rotor surface you will have smooth brakes , more effective brakes and zero vibration. It is even a very worthwhile practice when fitting new rotors to have all four rotors skimmed into perfect alignment on your car with this inexpensive procedure. Rotor distortion due to DTY is very common, in fact one in seven cars has a steering geometry problem either when it is built new or after nudging a kerb or hitting a large pothole. Uneducated people still say “my rotors are warped”. Well the engineering facts are rotors do not warp, they are made of cast iron, they are very tough and can be run to red heat and cooled time after time and they will not distort, we do this day in day out on our Dynos in the EBC lab. Thats why the whole world still uses cast iron as a vehicle brake rotor material, there has never been anything to beat it and probably never will be. Pro cut machines work on both plain rotors and even better on slotted and drilled rotors of all types.

Who are Pro-Cut?

Pro cut are a USA based multi national and extremely professional corporation. Their machines are used and approved by many major car manufacturers and used all over the world to do exactly what they do best, correct for rotor mis-alignment no matter how it arises on a car. You cannot achieve this with any other device.

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