Absolutely normal. But I would still get one which is coated. My R1 Concepts from Rock Auto were completely black with a Zinc coating
Pros: Zinc coating, completely black
Reviews of R1 Concepts parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
4.2
Manufacturer Ranking
#46
94
Spare Parts
2
Spare Parts
Comparisons
I’ve got the R1 concept drilled/slotted rotors and ceramic pads, felt a decent difference from the OEM but my rotors and pads were at about 35% life so it makes sense that I’d feel a good difference. I do some spirited driving around town and the brakes perform pretty great.
Pros: pretty great performance
Vehicle:
Subaru
Got them on. Lasted for a good amount. 20k miles. Weekend track slowing from 160mph+ don’t use ceramic pads something softer would be better
Pros: lasted for a good amount
Cons: ceramic pads not good
Mileage: 32186 km
Bought my 2018 Stinger GT new - within a few months my steering would shake like it had warped rotors - and it wasnt always the case - it would be ok at times, then come back. I use Auto Hold a lot - and it seems that feature causes the shaking in the steering wheel the more I used it. I did talk with Kia about it and they dismissed it and said it was fine - after being sick and tired of the shaking I went and bought new rotors and pads from R1 Concepts and havent looked back - no issues at all since I installed them and I use Auto Hold every single day.
Pros: no issues since install
Cons: steering wheel shake
Vehicle:
Kia
R1 concept is what I use, with the drilled and slowed with there performance pads, works very good and at a low cost , plus the rotors look awesome on the car.
Pros: low cost, works very good
I have R1 on now all around and no issues since.
Pros: no issues
Been running r1 concepts slotted and drilled for a year on factory bbk. Highly recommend.
Pros: highly recommend
Vehicle:
Infiniti Q50
Running the R1 concept with ceramic pads now and have no issues. They bite a lot better then the stock setup I had on it before.
Pros: better bite, no issues
Vehicle:
Infiniti Q50
I have R1 Concepts slotted rotors and ceramic pads, huge upgrade in performance over the stock setup.
Pros: huge performance upgrade
New rotors and pads without breaking in at all, just normal driving as soon as changed. Pads lasted 30.000km ish, while rotors wrapped at about 40.000km ish (pads replaced at 30k with same R1 concepts). Brake feel and performance was OK, but much worse than when broken in. Light squeal at about 15.000km and onwards. New rotors and pads following break in procedure, 10 stops from 90km/h (55mph aprox), never coming to a complete stop, then driving 30 minutes never coming to a complete stop, rolling to a stop on neutral and waiting another 30 minutes. Pads lasted about 40.000km ish, rotors lasted 80.000km ish, pads replaced at 40.000km with same R1 concepts ceramic.
Pros: longer life with break in
Cons: squealing, worse performance
Vehicle:
Honda Civic
Mileage: 40000 km
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