SKU: 34667976377

034Motorsport Audi B8 S4/S5 2-Piece Floating Front Brake Rotor Upgrade Kit

Sale price$1102.49 Regular price$1224.99
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

034Motorsport Audi B8 S4/S5 2-Piece Floating Front Brake Rotor Upgrade Kit034 Motorsport Audi B8 S4 S5 2 Piece Floating Front Brake Rotor Upgrade Kit. The 034 Motorsport 345mmx30mm 2 Piece Floating Front Brake Rotor Upgrade Kit for the Audi B8 B8. 5 S4 S5 is a complete replacement brake rotor kit, designed to work flawlessly with the factory front calipers found on the B8 B8. 5 S4 S5. Weighing in at approximately 19. 00lbs, each rotor reduces rotational weight by 5. 10lbs per corner over the factory 24. 10lb rotors! While

034 Motorsport - Audi B8 S4/S5 2-Piece Floating Front Brake Rotor Upgrade Kit.

The 034 Motorsport 345mmx30mm 2-Piece Floating Front Brake Rotor Upgrade Kit for the Audi B8/B8.5 S4/S5 is a complete replacement brake rotor kit, designed to work flawlessly with the factory front calipers found on the B8/B8.5 S4/S5.



Weighing in at approximately 19.00lbs, each rotor reduces rotational weight by 5.10lbs per corner over the factory 24.10lb rotors! While reducing weight, the rotor retains proper thermal mass in the rings to adequately capture, and dissipate heat.

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. From the factory, the same straight-veined rotor is used on both sides of the S4. The 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 axle 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 events while maintaining the axial and radial float between the hat and disc, allowing for safe expansion and contraction from heat.

FEATURES:

  • Lightweight Construction (19.00lb 034Motorsport Rotor vs 24.10lb OE Rotor)
  • Floating, 2-Piece Design
  • Aerospace Grade Aluminium Hats with Type III Hard Anodizing**
  • CM-250 Special Alloy Rotor Rings
  • J-slotted Friction Face
  • OEM Fitment & Functionality
  • 72 Curved Vanes Force Cooling Air through Brake Disc
  • Directionally Curved Cooling Vanes vs OE Straight-Veined Rotors
  • Floating Bobbins Mounting System
  • Replaceable Rotor Rings
  • Lower Long-term Maintenance Cost

WHAT'S INCLUDED:

    • 034Motorsport 2-Piece Floating Front Rotor Pair

OE PART INTERCHANGE:

  • 8K0 615 301 M
  • 4G0 615 301 G
  • 4G0 615 301 AF

**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.

FITMENT:

Make Model Years Chassis Engine
Audi Q5 2013-2017 B8.5 3.0 TFSI
Audi S4 2010-2017 B8/B8.5 3.0 TFSI
Audi S5 2008-2012 B8 4.2L FSI
Audi S5 2013-2017 B8.5 3.0 TFSI


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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  • 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: 34667976377

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GhostFace
Carnegie, US
★★★★★ 5
Secure Mount With Premium Feel
This phone mount feels incredibly sturdy once installed. No shaking or movement while driving, even on rough roads. The design looks clean and factory installed instead of bulky like a lot of other mounts. It holds the phone securely and keeps it easy to access for navigation.
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Reviewed in the United States on May 15, 2026
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L.A.
Chelsea, US
★★★★★ 5
Good Solid Mount
Got for my 2019 TRD Off Road. Works great, solid mount. Phone easy in, easy out once you get used to it. Looks and feels well made.
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Reviewed in the United States on May 19, 2026
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Solid Product
I was a bit skeptical based on the price ($85 total after taxes) but you can tell that for the price, this thing is sturdy and high quality. Holds solid onto the vent and keeps my iPhone in place. Easy to adjust and move to your liking, also easy to turn 90* and have your phone sideways. Only drawback is that is obstructs the view of the clock on my 4Runner and slightly obstructs my windshield, but I am sure I will get used to it.
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Reviewed in the United States on May 14, 2026
A
Verified Purchase
Annika Chestnut
Natrona Heights, US
★★★★★ 5
Great phone holder
I use this phone mount in my Subaru Impreza, and it works perfectly with my vents. It holds my phone super securely—no wobbling or slipping—so it’s great for navigation or hands-free use. Really solid and reliable for the price.
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Reviewed in the United States on November 5, 2025
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Verified Purchase
Amanda & Josh
Port Orchard, US
★★★★★ 4
Excellent product.
First impression: excellent product. The only reason I deducted a star is because the price is obviously quite insane.
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Reviewed in the United States on February 26, 2026

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