SKU: 13897876298

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

Sale price$1079.99 Regular price$1199.99
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

034Motorsport 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 RS4/RS5 - BLACK034 Motorsport 2 Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 RS4 RS5 BLACK. The 034Motorsport 370x22mm 2 Piece Floating Rear Brake Rotor Upgrade for the Audi B9 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 - BLACK.

The 034Motorsport 370x22mm 2-Piece Floating Rear Brake Rotor Upgrade for the Audi B9 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 your 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 Tuning

Shipping Notes
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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: 13897876298

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Reviewed in the United States on January 17, 2026
M
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Mandiisbooked08
Houston, US
★★★★★ 4
One sitting read
Format: Kindle
I think I might have a thing for text message chains and love letters. This book is full of witty, sexy banter. My personal faves. Colin: What would you do if you accidentally texted the wrong person something naughty, and they responded in a way that surprised you? You were so intrigued that you kept coming back to this faceless number. She's sexy, straightforward, effortlessly funny, and you can't stop thinking about her. And then you realize this mystery woman is none other than your unwanted roommate and best friend's sister. She's a dumpster fire in real life, but what if there was more to it than that? Olivia: Who hasn't started an apartment complex on fire, lost their job, and forced to move back home and live with their brother and his insufferable best friend? Add in some mismatched socks, and this is a typical Tuesday night for Olivia. I devoured this book. I opened it thinking I would read a few chapters and fall asleep. 4 hours later, I finished it. IN.ONE.SITTING. The bags under my eyes today were worth it
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Reviewed in the United States on February 28, 2024
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Bozzles
Birmingham, US
★★★★★ 5
Excellent Reading
Format: Paperback
Great Book
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Reviewed in the United States on May 30, 2026
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Cassidy C
Alexandria, US
★★★★★ 4
Really good! Could have had 5 stars but…
Format: Kindle
I thought this book was an easy and entertaining read. The MCs had some depth, and the angsty lead up to these two colliding was very well done. I love them together, I felt their chemistry, and this book could have had five stars if it wasn’t for the weirdly rushed and unbelievable way the ending was written. The back and forth was ridiculous and it seems she can’t change the way she has originally perceived him - as a rich, pompous jerk (despite only having his expensive kitchenware and childhood snark as her evidence). Then we are supposed to believe that out of no where, for no reason (apart from finding out he’s moving) she suddenly wants him back? And then despite how hurtful her words had been, he takes her back? Idk this ending was messy, and there didn’t seem to be enough written or enough plot for any of this to be believable. I won’t disregard the entire story because I didn’t like the ending, but I do wish it had been better.
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Reviewed in the United States on July 21, 2025
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Aryean Barnes
Bozeman, US
★★★★★ 3
:)
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Cute
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