SKU: 91817988050

034Motorsport 1-Piece Front Brake Rotor Upgrade Kit - Audi B9 S4/S5/SQ5 - 034-301-1024

Sale price$722.25 Regular price$802.50
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Description

034Motorsport 1-Piece Front Brake Rotor Upgrade Kit - Audi B9 S4/S5/SQ5 - 034-301-1024034 Motorsport 1 Piece Front Brake Rotor Upgrade Kit Audi B9 S4 S5 SQ5 034 301 1024. 034Motorsport 1 Piece Brake Rotors are a direct replacement upgrade for Audi B9 B9. 5 S4 S5 SQ5, offering improved cooling, durability, and braking consistency at a street friendly price. Featuring directionally ventilated internal vanes, a high strength CM 250 alloy, and a J slot slotted friction face, these rotors are engineered to manage heat more effectively than

034 Motorsport - 1-Piece Front Brake Rotor Upgrade Kit - Audi B9 S4/S5/SQ5 - 034-301-1024.

034Motorsport 1-Piece Brake Rotors are a direct replacement upgrade for Audi B9/B9.5 S4/S5/SQ5, offering improved cooling, durability, and braking consistency at a street-friendly price. Featuring directionally ventilated internal vanes, a high-strength CM-250 alloy, and a J-slot slotted friction face, these rotors are engineered to manage heat more effectively than factory straight-vane OEM rotors at far less cost to your wallet.

Designed for daily driving, spirited street use, autocross, and light track duty, they bolt directly to stock calipers and are compatible with factory or upgraded pads. Finished with a Geomet anti-corrosion coating and temperature indicating paint marks, these rotors deliver functional performance gains while being designed for years of real-world use.

Directional Cooling. Stronger Materials. Real Performance at a Fair Price:

034Motorsport 1-Piece Rotors deliver a meaningful braking upgrade for Audi and Volkswagen platforms without the cost of a two-piece system. Designed as a direct replacement for factory rotors, they combine advanced cooling technology, a high-strength alloy, and proven track-inspired features at a price point typically reserved for basic blank rotors.

Unlike factory rotors that rely on straight internal cooling vanes and soft iron alloys, 034Motorsport 1-Piece Rotors are engineered from the inside out to manage heat more effectively and hold up under repeated braking events.

Directionally Ventilated for Active Cooling:

Most OEM Audi and VW rotors utilize straight internal cooling vanes or no vanes at all, which create limited airflow and minimal active cooling effect. 034Motorsport rotors feature directionally ventilated internal vanes that pull air in from the center of the disc and force it outward. This increased airflow greatly improves heat transfer and cooling of the rotor, helping the rotor stay cooler during hard street driving, spirited back roads, autocross, and light track use. Cooler rotors maintain braking consistency and reduce the likelihood of fade, warping, or hotspots.

High Strength CM-250 Alloy:

Factory rotors are typically cast from relatively soft iron, which wears quickly and warps under high pressure and high heat. 034Motorsport 1-Piece Rotors use a Heat-Treated CM-250 special alloy formulated specifically for performance driving. This material is more resistant to heat cycling, less prone to warping, and better suited for repeated high-temperature braking than OEM rotors.

J-Slot Friction Face:

The J-slot slotted friction surface is designed to do more than just look aggressive. J-slots help clear debris from the pad surface, allow pad off-gassing under high temperatures, and distribute heat more evenly across the rotor face, reducing the likelihood of hot spots. This results in more consistent braking performance compared to traditional straight slots or drilled rotors, which can concentrate heat and increase the risk of cracking.

Street Friendly, Track Capable:

These rotors are optimized for daily driving, spirited canyon runs, autocross, and entry-level track days. They are fully compatible with stock calipers and can be used with factory pads or upgraded performance pads. For drivers engaging in more aggressive back-road use or extended track sessions, 034Motorsport 2-Piece rotors remain the ideal solution and are recommended for the highest thermal demands.

Built for Year-Round Use:

Each rotor is finished with a Geomet anti-corrosion coating to protect against rust and corrosion, making them suitable for all weather oncditions. Temperature-indicating paint marks on the rotor edge provide a visual reference for heat exposure during aggressive driving or track use.

Temperature-Indicating Paint Marks:

034Motorsport 1-Piece Performance Brake Rotors feature temperature-indicating paint marks on the rotor edge that provide a quick visual reference for heat exposure during aggressive street driving, autocross, or track use.

The paint changes color at specific temperature thresholds to help drivers understand operating conditions:

  • Green †’ White at 478°C (892°F)
  • Orange †’ Yellow at 571°C (1060°F)
  • Red †’ White at 640°C (1184°F)

If the red paint turns white throughout, the rotors are consistently operating beyond their intended temperature range. This may indicate the need for lower-friction brake pads, improved cooling, or upgrading to 034Motorsport 2-Piece Rotors, which have higher heat dissipation capabilities with their two-piece design.

Performance That Makes Sense:

034Motorsport 1-Piece Rotors are priced competitively with basic blank replacement rotors, while delivering meaningful performance improvements in cooling, durability, and braking consistency. This makes them one of the best value brake upgrades available for Audi and VW owners.

Buyer's Guide:


Brake Rotor Comparison Chart:

Feature / Use Case Stock OEM Rotors 034Motorsport 1-Piece Rotors 034Motorsport 2-Piece Rotors
Direct OEM Fitment œ“ œ“ œ“
Internal Vane Design Straight vanes Directional vanes Directional vanes
Active Cooling Efficiency Low High Very High
Rotor Material Soft OEM iron CM-250 Special Alloy Rotor CM-250 Special Alloy Rotor Rings
Heat Resistance Low High Maximum
Warping Resistance Low High Very High
Friction Face Design Blank or drilled (platform dependent) J-slotted Friction Face J-slotted Friction Face
Pad Degassing & Debris Removal Minimal Excellent Excellent
Corrosion Protection Minimal Geomet anti-corrosion coating Type III Hard Anodizing & Geomet anti-corrosion coating
Temperature Indicators No Yes Yes
Unsprung Weight Reduction No No Yes
Rotor Ring Replaceable No No Yes
Street Driving œ“ œ“œ“œ“ œ“œ“
Spirited / Canyon Driving Limited œ“œ“ œ“œ“œ“
Autocross Not recommended œ“œ“ œ“œ“œ“
Track Use No Entry-level Frequent / Aggressive
Typical Price Range Low Low to Moderate High
Best For Basic commuting Best balance of performance & value Maximum braking performance


Features:

  • 350mm x 34mm Size
  • OEM Fitment & Functionality
  • CM-250 Special Alloy Designed Specifically To Reduce Warping from Hard Street Use
  • J-Slot Slotted Friction Face
  • Temperature Indicating Paint Marks on Rotor Edge:
    • Green changes to white at 478° C (892° F)
    • Orange changes to yellow at 571° C (1060° F)
    • Red changes to white at 640° C (1184° F)
      • If the Red paint turns white throughout, the rotors are running too hot.
  • Directionally Ventilated to Force Cooling Air Through the Brake Disc
  • Heat Treated
  • Geomet Anti-Corrosion Coating

What's Included:

  • 034Motorsport 1-Piece Front Rotor Pair

Part Number Interchange:

  • 4M0 615 301 AB
  • 4M0 615 301 AN
Make Model Years Chassis Engine
Audi S4 2017-2025 B9/B9.5 3.0 TFSI
Audi S5 2017-2025 B9/B9.5 3.0 TFSI
Audi SQ5 2017-2024 B9/B9.5 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:
  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: 91817988050

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D. Frazier
Carnegie, US
★★★★★ 5
Only wallet I've owned for 40+ years, I expect this 3rd one to last another 20 years
Color: Ingram Brown
This is the second wallet I ever bought after the original wallet given to me by my father wore out. I love the trifold wallet and this one has been perfect for me. It's made of all leather which is key to long life. All my wrangler jeans have a faded outline on the right front pocket where I carry it. It has multiple slips for my many credit cards, grocery reward cards, insurance cards, business cards, driver license and passport card. There are some pockets behind those for my library card (I seldom need it since I know the number by heart) and my America the Beautiful pass which I only need when I visit a national park. The only complaint still remains from the first version and is that the pockets are about 1 mm to skinny on a new wallet. Maybe that's a good thing so everything doesn't fall out when I open it up to use it. I'm highly partial and highly surprised this wallet is still being made. I'm looking forward to buying another one in 20 years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2025
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T
Chelsea, US
★★★★★ 5
Good purchase
Color: 6692:Silver strap&blue dial
I'm actually impressed that I haven't broke it yet I wear it split and firewood never take it off really only thing is the time is a little fast after a few weeks it'll be a couple minutes fast but I've had it for a few months now and it's still looks like a day I got it very good looking watch
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Reviewed in the United States on March 17, 2026
M
Verified Purchase
Mark B.
Belleville, US
★★★★★ 5
Great Watch and Worth The Price
Color: 6692:Silver strap&blue dial
My husband loves this watch. I looked at a watch (Bulova brand) it was $650 and it looks just like this watch. I bought this one instead and my husband wears it everyday and is happy with it. It was a great birthday present :) I saved money and so I was able to spend extra $$ on some things I wanted too… umm, maybe I shouldn’t of said that :) lol
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Reviewed in the United States on April 15, 2025
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Verified Purchase
Kenneth Smith
Phoenix, US
★★★★★ 4
A watch for the stylish gentleman
Color: 6692:Silver strap&blue dial
This is a really good watch, the perfect classic time piece all grown man need
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Reviewed in the United States on June 5, 2025
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Verified Purchase
Eric S Zambrana
Boise, US
★★★★★ 3
Where’s the Lumination ?
Color: 6692:Silver strap&blue dial, Color: 6692:Silver strap&blue dial
I received my watch today and noticed there is no lumination in the dark. That was part of the reason why I liked the blue face model with silver band. It’s the mechanical version. Please let me know. Is this a knock off ?
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Reviewed in the United States on April 1, 2026

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