SKU: 40387549837

EBC Ultimax OE Style Disc Kit (RK739)

Sale price$156.01 Regular price$173.34
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

EBC Ultimax OE Style Disc Kit (RK739)EBC Premium OE Replacement Brake Rotors GEN 3 EBC Brakes are quickly switching to its latest Gen 3 silver grey disc rotors. All disc rotor materials and drill or slot patterns will remain the same except the base rotor will be Silver Grey. This new surface coating is a highly corrosion resistant rust prevention coating and is now on all current production of EBC Brake rotors. New GEN 3 Silver Grey Rotors and the Logic Behind It In the past few years,

EBC Premium OE Replacement Brake Rotors GEN 3
EBC Brakes are quickly switching to its latest Gen 3 silver grey disc rotors. All disc rotor materials and drill or slot patterns will remain the same except the base rotor will be Silver Grey. This new surface coating is a highly corrosion-resistant rust prevention coating and is now on all current production of EBC Brake rotors.

New GEN 3 Silver Grey Rotors and the Logic Behind It
In the past few years, EBC Brakes has enhanced its rotor production facilities, now over 80% of our rotor castings are produced in Europe and 100% of machining for sport rotors is done in either the UK or the USA. EBC switched in early 2023 to a new silver grey Geomet style coating color, the photograph opposite from the AutoSport show a few years ago, shows what our rotors looked like before and the photo below shows the new product

The Reason For The Switch

  • Silver color leaves the rotor hat or hub silver in appearance after bedding in – more likely to match a vehicle's original rotor colors, so the front and back of the car look similar if you have only changed one axle
  • The new silver finish has far higher corrosion resistance to the former black etch paint (thermic black versions)
  • Painting is now done as a part of the rotor production process in the actual casting plant. This facility is more environmentally friendly, and air quality controlled and it also means the rotor castings are coated right after machining and washing leaving no time for surface corrosion to set in which happens minutes after a rotor is washed and left as naked iron

Made Using G3000 Cast Iron
EBC Automotive brake rotors are made from G3000 spec cast iron and full specifications and properties can be seen here! Runout figures above this will lead to vibration after 3000 to 4000 miles due to what we call disc thickness variation which is not a warranty condition. So you see this is no cheap import brake disc. These brake discs have the highest integrity and product quality on the aftermarket. An OE quality replacement disc, made of the finest grade iron and a perfect replacement disc for any car.

Every EBC rotor is runout inspected on this machine. Even when manufactured on state of the art precision machines, not even ONE single disc escapes this process guaranteeing perfect disc alignment. If during install you notice runout on your car it will surely be due to a chassis alignment that happens on one in seven cars, usually cased by nudging a kerb or hitting a pothole in the road earlier in driving the vehicle.

All new Gen 3 Rotors are Silver Coated

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40387549837

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Kindle Customer
Lexington, US
★★★★★ 5
No more migraines
I have suffered migraines for years. It was so bad in December 2025 that I begged my neurologist for help. He suggested several things that I was unwilling to try due to the side effects. However, he recommended I try 400 mg daily of Magnesium L Threonate. January 2026, I started the taking it. The first month only 3 migraines for the whole month after years of 3-4 migraines a week. Its May 2026 and I have only had 3 more migraines this year. I highly recommend this product for migraine prevention.
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Reviewed in the United States on May 20, 2026
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tron
Draper, US
★★★★★ 5
The best Magtein I have tried thus far
I take double the dose because when I double the dose it improves my ability to pay attention and I am less distracted. Yes I have ADD but no longer take Adderall for it. Being 56 years old Magtein really improves my memory and restored it to like new by ten days of use. Shockingly It woke me up from a light sleep late evening as memories rushed in and I have been taking it ever since. I have been taking it 7 months now and over time it has slowly but surely improved my short term memory so that it also is nearly the same as before. I have seen slight improvements in working memory enough to be encouraged It may become an advancement from a historical standpoint. This is my second bottle by Teraputics. I was taking 2 bottles of NOW brand per month for my memory and concentration because it is the cheapest but when Amazon ran out Teraputics is the product I decided to try next. But I like this brand better as it seems more concentrated or I should probably say more bio-available so I decided to by it and pay the extra money over NOW brand. I just wish it were cheaper. I am hoping to ask them for a deal if I buy 20 bottles in advanced as it is a must have for me. With this second purchase they included a free bottle coupon and not a buy one get one free. Right now I am very happy to get the free bottle.
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Reviewed in the United States on March 23, 2019
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Gloria C.
New York, US
★★★★★ 3
Daily Intake on Label Confusing
Label was not clear regarding milligrams per pill. Title label stated 2000mgs per serving (of 4 pills), but “supplement label” states 4 pills is 144 mgs per serving as a 34% of daily value. Very confusing. Not sure which metric to go by for daily intake.
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Reviewed in the United States on December 22, 2025
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Michael R. Wong
Pawtucket, US
★★★★★ 5
Great supplement
I like the way it helps me relax to sleep and helps to keep me more focused
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Reviewed in the United States on June 3, 2026
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John S. Raydo
Grantham, US
★★★★★ 5
No diarrhea
My wife had severe diarrhea using a common type of magnesium, taken at doctor's recommendation. Doctor recommended this type, L-Threonate. Totally eliminated diarrhea problem.
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Reviewed in the United States on May 15, 2026

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