034 Motorsport 2-Piece Floating Rear Brake Rotor Upgrade for Audi C8 RS6 & RS7
- Description
- Fitment
- Refund Policy
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. 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.
NVH Levels: None-Low
Product Description:
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.
Temperature-Indicating Paint Marks:
034Motorsport 2-Piece Performance Brake Rotors feature temperature-indicating paint marks on the rotor edge that provide a quick visual reference for heat exposure during aggressive street driving, autocross, or track use.
The paint changes color at specific temperature thresholds to help drivers understand operating conditions:
- Green → White at 478°C (892°F)
- Orange → Yellow at 571°C (1060°F)
- Red → White at 640°C (1184°F)
If the red paint turns white throughout, the rotors are consistently operating beyond their intended temperature range. This may indicate the need for lower-friction brake pads or improved cooling

Buyer’s Guide:
Brake Rotor Comparison Chart:
| Feature / Use Case | Stock C8 RS6/RS7 Rotors | 034Motorsport 2-Piece Floating Rotors |
|---|---|---|
| Rotor Design | Semi-Floating 2-Piece Rotor | Floating 2-Piece Rotor |
| Internal Vane Design | Incorrect Directional Veins | 72 Directional Curved Vanes |
| Cooling Efficiency | Moderate | Very High |
| Rotor Material | OEM Cast Iron | CM-250 Special Alloy Rotor Rings |
| Hat Construction | Integrated Iron Hat | 6061-T6 Aerospace Aluminum Hat |
| Weight | 24.7lb OE Rotor | 22.7lb Lightweight Rotor |
| Heat Resistance | Good | Maximum |
| Warping Resistance | Moderate | Very High |
| Friction Face Design | OEM Drilled Face | J-Slotted Friction Face |
| Pad Degassing & Debris Removal | Moderate | Excellent |
| Floating Hardware | No | Yes – Floating Bobbin System |
| Replaceable Rotor Rings | No | Yes |
| Long-Term Maintenance Cost | Higher Full Rotor Replacement Cost | Lower Replacement Ring Cost |
| Street Driving | ✓✓ | ✓✓✓ |
| Spirited / Canyon Driving | ✓ | ✓✓✓ |
| Autocross / HPDE | Limited | ✓✓✓ |
| Frequent Track Use | Not Ideal | Designed For It |
| Best For | Daily Driving & Occasional Spirited Use | High-Performance Street & Track Driving |
Features:
- Lightweight Construction (22.7.3lb 034Motorsport Rotor vs. 24.7lb OE Audi Rotor)
- Floating, 2-Piece Design
- 6061-T6 Billet Aluminum Hats
- Aerospace Grade Aluminum Hats
- CM-250 Special Alloy Rotor Rings
- J-slotted Friction Face
- OEM Fitment & Functionality
- Temperature Indicating Paint Marks on Rotor Edge:
- Green changes to white at 478° C (892° F)
- Orange changes to yellow at 571° C (1060° F)
- Red changes to white at 640° C (1184° F)
- If the Red paint turns white throughout, the rotors are running too hot.
- 72 Curved Vanes Force Cooling Air through Brake Disc (OE rotors use incorrect directional 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
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.