SKU: 17438177559

034Motorsport 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 RS4/RS5 - RED

Sale price$1079.99 Regular price$1199.99
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Description

034Motorsport 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 RS4/RS5 - RED034 Motorsport 2 Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 RS4 RS5 RED. The 034Motorsport 370x22mm 2 Piece Floating Rear Brake Rotor Upgrade for B9 B9. 5 Audi RS4 RS5 is a complete replacement brake rotor and caliper carrier kit, designed to work flawlessly with the factory rear calipers. Weighing in at approximately 15. 1lbs, each rotor reduces rotational weight by 1. 6lbs on each corner over the factory 16. 7lbs rotors, and increases

034 Motorsport - 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 RS4/RS5 - RED.

The 034Motorsport 370x22mm 2-Piece Floating Rear Brake Rotor Upgrade for B9/B9.5 Audi RS4/RS5 is a complete replacement brake rotor and caliper carrier kit, designed to work flawlessly with the factory rear calipers. Weighing in at approximately 15.1lbs, each rotor reduces rotational weight by 1.6lbs on each corner over the factory 16.7lbs rotors, and increases rotor diameter from 330mm to 370mm! While reducing weight, the rotor retains proper thermal mass in the rings to adequately capture heat, while utilizing 36 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.

The 034Motorsport 370x22mm 2-Piece Floating Rear Brake Rotor Upgrade is available in Black & Red for the Audi B9 RS4/RS5.

The 034Motorsport 370x22mm 2-Piece Floating Rear Brake Rotor Upgrade for Audi B9 RS4/RS5. is a complete replacement brake rotor and caliper carrier kit, designed to work flawlessly with the factory rear calipers. Upgrading your 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 15.1lbs, each rotor reduces rotational weight by 1.6lbs on each corner over the factory 16.7lbs rotors, and increases rotor diameter from 330mm to 370mm! While reducing weight, the rotor retains proper thermal mass in the rings to adequately capture heat, while utilizing 36 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.

Upsizing the rear rotor size from 330mm to 370mm repositions the caliper further outward, increasing its leverage on the rotor. With this added leverage, the factory rear caliper can generate more braking force at the rear axle. This not only improves rear-end braking performance, but also helps take stress off the front brakes during hard stops. The result is a more balanced braking system with better stability, reduced front brake overload, and enhanced overall stopping confidence.

The central hat portion of the 034Motorsport rotor is made of 6061-T6 aircraft specification aluminium. The disc is constructed out of a proprietary metal alloy that can withstand immense braking temperatures while holding form. The rotor utilizes 36 directionally curved vanes to forcefully flow cool air through the rotor to dissipate heat.

The face of the rotor utilizes J-Slot slots to clean the pad surface of contaminants and allows hot pad outgassing.

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.

Fitment:

Audi RS4 2018-Present B9/B9.5 2.9 TFSI
Audi RS5 2018-Present B9/B9.5 2.9 TFSI


Features:

  • Lightweight Construction (15.1lb 370mm 034Motorsport Rotor vs. 16.7lb 330mm OE Rotor)
  • Floating, 2-Piece Design
  • Aerospace Grade Aluminium Hats with Type III Hard Anodizing**
  • CM-250 Special Alloy Rotor Rings
  • J-Slot Slotted Friction Face
  • OEM Fitment & Functionality
  • 36 Curved Vanes Force Cooling Air through Brake Disc
  • Floating Bobbins Mounting System
  • Replaceable Rotor Rings
  • Lower Long-term Maintenance Cost

Part Number Interchange for A/S Models:

  • 8W0 615 601 E
  • 8W0 615 601 K

Part Number Interchange for RS4/RS5:

  • 8W0 615 601 G

What's Included:

  • 034Motorsport 2-Piece Floating Rear Rotor Pair
  • Caliper Carrier Conversion Brackets
**Please Note: Type III hard anodizing of aluminium is considered as a functional surface coating process. While we always aim for colour consistency, colour variations may exist from batch to batch due to the nature and variables in the anodizing process.

The installation of your 2-Piece Floating Rear Brake Rotor 370mm Upgrade for Audi B9 RS4/RS5 is a straight forward process that will take approximately 1.5 to 2 hours to complete. You can access our detailed installation guide by clicking the link below.

Download the 2-Piece Floating Rear Brake Rotor 370mm Upgrade for B9/B9.5 Audi A4/S4, A5/S5, Q5/SQ5, & RS4/RS5 Install Guide

Recommended product: Audi B9 RS4/RS5 ECU tuning

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: 17438177559

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CGB
Lowell, US
★★★★★ 4
You have to reposition to stay cool
Size: Queen
It's okay...it isn't much better than other cooling pillows I have had. If I had known you can't wash this pillow, only the outside cover, I would not have paid so much. The cover is cool to touch but the heat from your head will penetrate the pillow and I am constantly having to turn it over. So it is ok but way overpriced.
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Reviewed in the United States on August 14, 2025
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Francoara B Bauer
Belleville, US
★★★★★ 5
I like my Sujo FlexCool pillow
Size: Queen
It cools nicely and it is possible to add or remove fill to optimize preferred comfort. Quality made and very comfortable for me after I added some of the fill provided with the pillow.
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Reviewed in the United States on December 5, 2025
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Secret Garden
West Palm Beach, US
★★★★★ 3
This was not for me
Size: King
Hmm… I didn’t hate this pillow but I was not blown away either. I’ve been using Sleep Number pillow, and since the price range was similar, I thought this might be a great alternative, especially when it’s hot. Even though I was able to adjust the filling, I couldn’t find the right shape/density. And I found that this pillow felt hotter when I was sleeping. After trying it for a few weeks, I went back to my Sleep Number pillow. The quality was fine. But I guess everyone is different, just like some people prefer a softer mattress and others don't.
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Reviewed in the United States on October 13, 2024
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D. Spurrier
Charlottesville, US
★★★★★ 5
Best pillow ever.
Size: King
How much did I like this pillow? My wife and I both loved it so much that we purchased another one. I think that says it all! The pillow arrives in a large box (king size pillow). It does NOT arrive all flattened and squished in a vacuum bag like some others do. I did place it on my back porch to air out for a while, just because that's what I do with any new bedding. I did not have any issue with scent or odors from either of my pillows. Its clearly well constructed with high quality materials. It comes with a smaller bag of extra stuffing if you want a slightly firmer pillow. We have not used any of the extra stuffing... we think the pillows are perfect as is! When I ordered the first pillow, I thought the price was a bit on the high side. After using it, I had no hesitation purchasing a second. This pillow is well worth the price. If anything, I feel this pillow is a great value at its price. Its not too hard, not too soft. Its the goldilocks pillow! I give this pillow my highest possible recommendation. Its simply a great pillow.
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Reviewed in the United States on December 5, 2024
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moshe
Waukegan, US
★★★★★ 5
Super comfy
Color: Soft, Size: Queen(28"×16"×5.9")
Absolutely love this pillow! It’s incredibly soft, supportive, and stays cool throughout the night. I’ve been sleeping much better since getting it. Great quality, perfect firmness, and definitely worth every penny.
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Reviewed in the United States on May 19, 2026

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