SKU: 97074344438

034Motorsport 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 A4/S4/A5/S5/Q5/SQ5 - GREY

Sale price$1102.49 Regular price$1224.99
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Description

034Motorsport 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 A4/S4/A5/S5/Q5/SQ5 - GREY034 Motorsport 2 Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 A4 S4 A5 S5 Q5 SQ5 GREY. The 034Motorsport 370x22mm 2 Piece Floating Rear Brake Rotor Upgrade for B9 B9. 5 Audi A4 S4, A5 S5, Q5 SQ5 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

034 Motorsport - 2-Piece Floating Rear Brake Rotor 370mm Upgrade Audi B9 A4/S4/A5/S5/Q5/SQ5 - GREY.

The 034Motorsport 370x22mm 2-Piece Floating Rear Brake Rotor Upgrade for B9/B9.5 Audi A4/S4, A5/S5, Q5/SQ5  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, and Grey for the A4/S4, A5/S5, & Q5/SQ5.

The 034Motorsport 370x22mm 2-Piece Floating Rear Brake Rotor Upgrade for B9/B9.5 Audi A4/S4, A5/S5, Q5/SQ5 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:

Make Model Years Chassis Engine
Audi A4 2017-Present B9/B9.5 2.0 TFSI
Audi A5 2017-Present B9/B9.5 2.0 TFSI
Audi Allroad 2017-Present B9/B9.5 2.0 TFSI
Audi Q5 2017-Present B9/B9.5 2.0 TFSI
Audi S4 2017-Present B9/B9.5 3.0 TFSI
Audi S5 2017-Present B9/B9.5 3.0 TFSI
Audi SQ5 2017-Present B9/B9.5 3.0 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 B9/B9.5 Audi A4/S4, A5/S5, Q5/SQ5, & 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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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: 97074344438

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Scriptor Addenda
Port Orchard, US
★★★★★ 5
Finally, the Law of Attraction Explained Clearly
Over the past 25 years, I’ve explored countless books on energy practices and the laws of vibrational attraction. Yet, if I could go back in time and choose just one to read on this subject, it would undoubtedly be this one. Nowhere else have I seen the principles of the law of attraction explained so completely, clearly, and yet with such elegant simplicity This book was clearly written by someone with a deep understanding of how the law of attraction operates and how our energy functions, both internally and externally. It addresses all the reasons why the law of attraction "don't work" for so many people and clearly explains all the key elements of how it truly works - unlike so many other books that levees out important parts of the puzzle. Even I, who consider myself somewhat of an expert on this topic, learned something new from this book. Allow me a small note of constructive criticism: for some reason, the eBook version doesn’t support text-to-speech via Kindle Assistive Reader, which I found disappointing. Hopefully, this can be resolved in a future update. Beyond this minor issue, the book is excellently written, thoughtfully organized, and, most importantly, filled with invaluable lessons, practical tools, and techniques for raising your vibration and inviting positive synchronicities into your life.
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Reviewed in the United States on October 25, 2025
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Jason m
Alexandria, US
★★★★★ 5
Manifest your desires with this book.
I really enjoyed this book on how to master your energy and learn the law of attraction. I've read several different books on manifesting in the law of attraction and a few things stood out to me in this particular book. The study about the effect of certain emotions on water was really interesting and I've never heard that before. I also thought the section on food and how it can affect your energy was also quite interesting. I will definitely read through the book again and it is a fairly simple read but I did enjoy some of the simple techniques that describe to help to manifest more. If you are looking for a fairly straightforward read on how to attract great things in your life and manifest this is a great book to start with.
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Reviewed in the United States on October 27, 2025
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Athanasia Zervos
Battle Creek, US
★★★★★ 5
great read
Format: Hardcover
great book to read to align to abundance
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Reviewed in the United States on March 14, 2026
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Sabrina
Houston, US
★★★★★ 4
Protect your peace!
Energy will always be important in someone!! Don’t let anyone hurt yours. Great tips and advice, Chapter 4 is essential for growing, healing and protecting your energy.
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Reviewed in the United States on January 5, 2026
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ron breland
Phoenix, US
★★★★★ 5
Great book on energy and the Law of Attraction
Format: Hardcover
One of the best books I have ever read on the Law of Attraction and how it really works through energy management. Simple to understand with no esoteric jargon, and with many practical examples, make this text well worth the purchase. Highly recommended!
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Reviewed in the United States on March 14, 2026

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