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:
  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: 97074344438

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4.4 ★★★★★
Based on 26 reviews
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A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
Great for aggressive chewers!
Size: Jumbo, Style: Peanut Butter
I have a very very aggressive chewer. She is a Rottweiler/Pitbull mix. Most toys she completely destroys within 2 days, sometimes 2 hours. I must praise this toy as she has had it for over 5 months and has not destroyed it! She loves chewing the ends and carries in her mouth squeaking it as she goes. I have 4 pups and they all take turns chewing when they can. I will be buying more Playology dog toys in the future. Thank you for making such a great toy!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
S
Verified Purchase
Steven Turner
West Palm Beach, US
★★★★★ 5
They are her favorites
Size: Medium (VALUE 2-Pack), Style: Beef, Size: Medium (VALUE 2-Pack), Style: Beef
We’ve had many dogs, many very destructive ones and wish I had these years ago. The hard toys get sharp edges, this toy is the best and yes is far better than the other red ones. My bulldog wants tug of war for 30 min to an hour every night. We’ve gotten tennis elbow, tendinitis, and pulled muscles holding onto this thing. She has tons of toys but 9pm and this is only option for her. We don’t get a choice. Easy to hold, well for a few min until your hand gets tired. First you one was about 3 years ago and she’s only on her third one. They last forever, easy to clean, and aren’t sharp edges. Seriously, better than any toy sold anywhere. My phone has hundred of pictures of Pickle holding this. She’s doing it right now. If you have a strong destructive dog that takes pride in destroying toys, ruin their confidence and get them this one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
P
Verified Purchase
Placeholder
Lowell, US
★★★★★ 5
Perfect Toy for Large Dogs
Size: Medium, Style: Cheddar Cheese
I don’t normally leave reviews, but this toy is stellar and is a new favorite for my dog! She is a large dog (70lbs cattle dog lab mix) and I accidentally bought a medium, but it actually is a great size for her! So far this stands up to her chewing, but I may need to update in a few weeks to speak for durability but it really does feel solid. Most toys don’t last an afternoon once she starts chewing, so this has already won in that regard. The shape is perfect as well. She can gnaw at it, squeak, play fetch, play tug. It bounces when she throws it around herself. The fact it smells like stinky cheese is just an added bonus for her. All around, a very well designed dog toy!
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Reviewed in the United States on December 27, 2023
A
Verified Purchase
Aly
New York, US
★★★★★ 4
Boxer Baby’s Favorite
Size: Jumbo, Style: Beef
This toy is my sweet girl’s absolute favorite. It was the first thing we gave her when we brought her home, and she has been obsessed with it since. She brings it from room to room, inside and outside. I would highly recommend this toy, however, we have gone through six in one year. They’re not very durable, especially with our boxer mix, who is a very heavy chewer. I’ve gotten the red and the blue, and she will only take red, which is fine with me because the blue STINKS. The red stinks too, but less so. The squeak is very loud, but she genuinely loves it so much that it’s hard to be annoyed by it. I’d say give the toy a try, you may be unintentionally giving them their favorite thing ever lol.
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Reviewed in the United States on October 2, 2025
R
Verified Purchase
Renia
Lexington, US
★★★★★ 1
Design Hazard
Size: Medium, Style: Bacon, Size: Medium, Style: Bacon
I have one of these in a larger version I picked up at the petstore. This one I do not recommend. There is a whole in the center where the pet bites down and my doggies' teeth kept getting stuck in it. If you've ever had a toy get stuck in your pups mouth, you've seen how thet go nuts trying to get it out.
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Reviewed in the United States on April 18, 2026

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