Next Level Performance
August 30, 2026 • 9 min read
Our Verdict
For a 2018-2023 Audi RS5 (B9) that sees track days, the GiroDisc 2-piece floating front rotor is the best all-around brake upgrade — it kills heat, cuts unsprung weight, and lets you replace just the iron ring later.
If you stay on the street, SHW's lightweight one-piece rotors or a set of EBC Bluestuff NDX pads deliver most of the benefit for a fraction of the cost. All three fit the factory RS5 calipers.
Shop Our Top Pick →The best Audi RS5 (B9) brake rotors upgrade the 2018-2023 coupe and Sportback without swapping the factory calipers — and the three that matter most are the GiroDisc 2-piece floating rotor, the SHW lightweight one-piece rotor, and EBC's Bluestuff NDX pad. The B9 RS5 packs a 444-hp, 443 lb-ft 2.9T twin-turbo V6 into a 3,946-lb body, and its 375mm x 36mm cast-iron front rotors cook under repeated hard stops. At NLP Performance in Tampa, FL, this is one of the most common upgrade questions we get from RS5 owners, so we lined up the three most popular paths side by side with real specs, weights, and pricing.
Why do the B9 RS5's factory brakes fade on track?
The B9 RS5's factory steel brakes fade on track because a single-piece 375mm x 36mm cast-iron rotor has to absorb the kinetic energy of a 3,946-lb car repeatedly slowing from triple-digit speeds. Audi fits a fixed six-piston front caliper over that rotor, and while it is strong for the street, the one-piece iron disc traps heat, cannot expand freely, and eventually cone-shapes or develops thermal cracks after sustained track use. Owners feel it as a long, soft pedal and a shudder through the wheel.
Audi's answer from the factory was an optional carbon-ceramic (CCB) setup with 400mm front discs, but that system runs into five figures to replace and is overkill for a weekend track car. The smarter fix keeps the OE calipers and upgrades the two things that actually manage heat and bite: the rotor and the pad. Every product in this guide is a direct fit for the standard steel-brake RS5 (B9) and requires no bracket or caliper change.
A directional-vane performance rotor keeps the factory RS5 caliper and hat spacing.
GiroDisc 2-piece floating rotors: the track answer
GiroDisc 2-piece rotors are the top brake upgrade for a track-driven B9 RS5 because they replace the heavy one-piece OE disc with a slotted cast-iron ring bolted to a 6061-T6 aluminum center hat. That construction drops roughly 4 to 8 pounds of unsprung, rotating mass per corner, and the fully floating mount lets the iron ring grow and shrink with heat instead of coning. The result is a firmer pedal, more consistent bite lap after lap, and far less warping than the factory rotor.
For the RS5, GiroDisc offers a matched front and rear set. The front rotors carry the load and cost around $1,450 a pair; the rear rotors run roughly $1,000. Running both keeps front-to-rear brake balance and thermal capacity even, which matters on a heavy AWD car that shifts a lot of weight forward under braking.
What We Like
- + Cuts roughly 4-8 lb of unsprung mass per corner
- + Floating design resists warping and coning under heat
- + Only the iron ring needs replacing later, not the whole rotor
Things to Consider
- – Highest up-front cost of the three paths
- – Slotted iron rings can hum slightly on a cold first stop
SHW lightweight rotors: OE-style weight savings
SHW lightweight rotors are the best value for a street-driven RS5 (B9) that wants less unsprung weight without a two-piece budget. SHW is a German OE-level supplier, and its drilled-and-dimpled one-piece discs are a direct swap for the factory 375mm front and rear rotors, shedding rotational mass through machined vanes and a lighter casting while keeping the OE part-number fitment (front 4M0615301AM, rear 8W0615601G). Front rotors sit around $633 each and rears around $580 each.
Because they retain a conventional one-piece design, SHW rotors reinstall exactly like stock and don't add any bolt-together hardware to check. They won't shed heat quite like a floating two-piece disc on a full track weekend, but for spirited canyon and street driving they sharpen turn-in and quiet the brakes for noticeably less money.
EBC Bluestuff NDX pads: bite without new rotors
EBC Bluestuff NDX pads are the cheapest way to transform how a B9 RS5 stops because they add serious bite to the rotors you already own. Bluestuff NDX is a semi-metallic super-street and trackday compound with a 0.52 coefficient of friction and an operating range from ambient up to roughly 1,000°F, so it warms up fast on the street yet survives session-long track heat that would glaze an OE ceramic pad. A front set for the RS5 runs in the $195 range.
Owners pick Bluestuff when the factory rotors are still healthy and they just want stronger, more fade-resistant stops. Pair the pads with the SHW or GiroDisc rotors above and you get a brake package that punches well above its price. Bluestuff produces a little more dust and initial noise than a stock ceramic pad, which is the trade for that extra grip.
EBC Bluestuff NDX: a 0.52-mu super-street and trackday compound.
How do these RS5 (B9) brake upgrades compare?
The quick answer: GiroDisc 2-piece rotors are best for track heat and long-term value, SHW one-piece rotors are the best street value, and EBC Bluestuff pads are the lowest-cost bite upgrade. The table below lines up all five parts by construction, axle position, and price so you can build the exact package your RS5 needs.
| Kit | Construction | Position | Best For | Price |
|---|---|---|---|---|
| GiroDisc Front 2-Piece SlottedTop Pick | 2-piece floating, alloy hat | Front | Track heat + weight loss | $1,450.00 |
| GiroDisc Rear 2-Piece Slotted | 2-piece floating, alloy hat | Rear | Balanced track package | $995.00 |
| SHW Lightweight Front Rotor | 1-piece lightweight, drilled | Front | Street value + OE fit | $632.95 |
| SHW Lightweight Rear Rotor | 1-piece lightweight, dimpled | Rear | Street value + OE fit | $579.53 |
| EBC Bluestuff NDX Front Pads | Semi-met street/track pad | Front | Bite on stock rotors | $194.59 |
Pair any of these rotors with a track-ready pad for the strongest RS5 brake package.
Why 2-piece rotors save money long-term
Two-piece rotors save money over time because you only replace the consumable cast-iron ring, not the entire rotor assembly. When a GiroDisc ring wears out, you unbolt it from the reusable aluminum hat and fit a fresh ring — typically about a third of the cost of a full new rotor. GiroDisc customers commonly report up to 60,000 miles on a ring in mixed street driving, so the up-front premium on the B9 RS5 front rotors evens out over the life of the car.
For RS5 owners already running GiroDisc fronts, NLP Performance stocks the matching replacement front rings so a rotor refresh costs a fraction of a full two-piece set. It is one of the quiet advantages that makes a two-piece rotor the more sensible long-term buy for a car you plan to keep and track.
GiroDisc replacement front rings refresh worn rotors for roughly a third the price.
Key Specifications — GiroDisc RS5 B9 Front Rotors
Which RS5 (B9) brake upgrade is right for you?
Choose GiroDisc 2-piece rotors if you run track days or autocross and want the lowest weight and best heat management for the long haul. Choose SHW lightweight one-piece rotors if you drive mostly on the street and want an OE-style, direct-fit disc that trims weight and sharpens the pedal for less money. Choose EBC Bluestuff NDX pads if your factory rotors are still good and you just want stronger, fade-resistant stops on a budget.
Many RS5 owners build in stages: start with Bluestuff pads, add SHW or GiroDisc rotors when the OE discs wear, and finish with a stainless brake line and high-temp fluid. Every part here is a bolt-on for the standard steel-brake B9, and you can browse the full range in our brake kits collection. Not sure which package fits your driving? Our Tampa team can spec it for you.
Frequently Asked Questions
What size are the factory front brake rotors on a B9 RS5?
The standard steel-brake 2018-2023 Audi RS5 (B9) uses 375mm x 36mm cast-iron front rotors with a fixed six-piston caliper, plus a 330mm rear. The optional factory carbon-ceramic (CCB) setup steps up to 400mm front discs. Every rotor and pad in this guide fits the standard 375mm steel-brake car.
Do these rotors and pads fit the factory RS5 calipers?
Yes. The GiroDisc 2-piece rotors, SHW lightweight rotors, and EBC Bluestuff NDX pads are all direct-fit for the OE six-piston RS5 (B9) calipers — no brackets, adapters, or caliper changes required. They are designed for the standard steel-brake car, not the carbon-ceramic option.
Are 2-piece floating rotors worth it over one-piece on the RS5?
For a tracked RS5, yes. A 2-piece floating rotor drops roughly 4-8 lb of unsprung weight per corner, lets the iron ring expand freely to resist warping, and later needs only a replacement ring at about a third the cost. For a street-only car, a one-piece SHW lightweight rotor delivers most of the weight benefit for less up-front money.
How hot can EBC Bluestuff NDX pads run?
EBC Bluestuff NDX is a super-street and trackday compound with a 0.52 coefficient of friction and an operating range from ambient up to roughly 1,000°F (about 550°C). It bites well cold on the street yet resists the fade a stock ceramic pad shows under sustained track braking, which is why it is a popular RS5 pad upgrade.
Will slotted rotors wear out my brake pads faster?
Slotted rotors like the GiroDisc rings increase pad wear only marginally versus a smooth rotor. The slots clear gas, dust, and water from the pad face for more consistent bite and cleaner cooling, which is why they are favored for track use. On the street the difference in pad life is minor, and the payoff is better fade resistance.
Do the SHW and GiroDisc rotors fit the RS5 Sportback too?
Yes. The B9 RS5 Coupe and RS5 Sportback share the same 2.9T drivetrain and standard steel brake hardware, so these front and rear rotors fit both body styles. The GiroDisc rotors also cross-fit the B9 RS4 Avant, which uses the same brake package.
Upgrade Your RS5's Brakes the Right Way
Shop GiroDisc, SHW, and EBC brake upgrades for the Audi RS5 (B9) and thousands more performance parts at NLP Performance.
Shop the CollectionFree shipping on select brands • Located in Tampa, FL