SKU: 42679684388

034 Motorsport 2-Piece Floating Rear Brake Rotor Upgrade for Audi RS6 & RS7 C8

Sale price$712.79 Regular price$791.99
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

034 Motorsport 2-Piece Floating Rear Brake Rotor Upgrade for Audi RS6 & RS7 C8The 034Motorsport 370mmx30mm 2 Piece Floating Rear Brake Rotor Upgrade for Audi C8 RS6 & RS7 is a complete replacement brake rotor, designed to work flawlessly with the factory rear calipers. Upgrading your rear rotors will increase overall braking performance in street, track, and HDPE driving conditions, as they keep your brakes cool and strong all day long! Weighing in at approximately 22. 7lbs, each rotor reduces rotational weight by 2lbs on each

The 034Motorsport 370mmx30mm 2-Piece Floating Rear Brake Rotor Upgrade for Audi C8 RS6 & RS7 is a complete replacement brake rotor, designed to work flawlessly with the factory rear calipers. Upgrading your rear rotors will increase overall braking performance in street, track, and HDPE driving conditions, as they keep your brakes cool and strong all day long!

Weighing in at approximately 22.7lbs, each rotor reduces rotational weight by 2lbs on each corner over the factory 24.7lb rotors! While reducing weight, the rotor retains proper thermal mass in the rings to adequately capture heat, while utilizing 72 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.

The central hat portion of the 034Motorsport rotor is made of 6061-T6 aircraft specification aluminum. The disc is constructed out of a proprietary metal alloy that can withstand immense braking temperatures while holding form. From the factory, the same straight-vaned rotor is used on both rear axles of the C8 RS6 & RS7. 034Motorsport rotors utilize 72 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat and are unique to the left and right axles to provide a substantial increase in cooling efficiency over the factory rotor design.

The face of the rotor utilizes J-Slot slots to clean the pad and surface of contaminants and allows hot pad outgassing, all while reducing overall braking noise compared to a traditional slotted rotor.

The rotor and hat have a floating mount system that utilizes high-strength alloy steel bobbins. The pins take the load from braking actions while maintaining the axial and radial float between the hat and disc, allowing for safe expansion and contraction from heat.

Features:

  • Lightweight Construction (22.7.3lb 034Motorsport Rotor vs. 24.7lb OE Audi Rotor)
  • Floating, 2-Piece Design
  • Aerospace Grade Aluminum Hats
  • CM-250 Special Alloy Rotor Rings
  • J-slotted Friction Face
  • OEM Fitment & Functionality
  • 72 Curved Vanes Force Cooling Air through Brake Disc (OE rotors utilize less efficient straight vanes)
  • Floating Bobbins Mounting System
  • Replaceable Rotor Rings
  • Lower Long-term Maintenance Cost

OE Part Interchange:

  • 4K0 615 601 A

What's Included:

  • 370x30 Left Rotor
  • 370x30 Right Rotor
  • Installation and Break-in Instruction Sheets
**Please Note: Type III hard anodizing of aluminum is considered as a functional surface coating process. While we always aim for color consistency, color variations may exist from batch to batch due to the nature and variables in the anodizing process.
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: 42679684388

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Reviewed in the United States on May 19, 2026
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Jonathan Robledo
Dallas, US
★★★★★ 5
Excellent Sound Deadening Material!
Style: 10 SqFt, Style: 10 SqFt
I installed Kilmat Sound Deadening in my truck, and I’m extremely impressed with the results. The material is thick, pliable, and easy to cut to fit doors, floor panels. It sticks very well to metal surfaces and doesn’t peel, even after heating it slightly to make it more flexible. After installation, I immediately noticed a reduction in road noise and vibrations. Worth the money!!
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Reviewed in the United States on April 4, 2026
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Jare
Whiting, US
★★★★★ 5
A Must Have For Car Restorations!
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
I have been installing this matting in my 74 Datsun 260Z restore and very pleased with the ease of application and overall quality. My car has bedliner coating inside and this stuff sticks extremely well and is easy to trim and shape as well. I have just started installing it and using the rollers to work it in place but I can already tell a difference with just the little bit I have added....has reduced the resonance in the metal already. It's not a fast process but know it will be very rewarding once complete.
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Reviewed in the United States on May 9, 2026
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Mike
Belleville, US
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
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Reviewed in the United States on December 3, 2025
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Paul
Boise, US
★★★★★ 5
Excellent sound deadening mats
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Purchased these for a 2020 Lexus RX350 due to the hollow sound of the car doors when shutting. They sounded cheap. The mats are super sticky and I applied them when the doors were hot from sitting in the sun. They alubutyl sticks like crazy and the end result was perfect. Now I have solid sounding doors. Good quality product.
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Reviewed in the United States on May 20, 2026

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