Silver Porsche 911 (991) Carrera S in a studio, showing the front brake and red caliper
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Next Level Performance

August 22, 2026 • 11 min read

Our Verdict

For most 991 owners, GiroDisc 2-piece iron-conversion rotors are the smartest brake upgrade — roughly a fifth the cost of replacing worn PCCB carbon-ceramic discs, with better track durability.

The GiroDisc 991 Carrera (991.2) front rotor kit lets you retire five-figure ceramic rotors for a rebuildable iron 2-piece setup that bolts to the factory caliper and uses the OE PCCB pad shape. Pair it with EBC Racing RP-1 pads for track days and the 991 stops like a modern GT car without the PCCB price tag.

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The best Porsche 911 (991) brake upgrades solve two problems the 2012–2019 car creates for enthusiasts: carbon-ceramic (PCCB) rotors that cost a small fortune to replace, and factory iron brakes that fade under repeated hard use. Whether you drive a 991.1 Carrera, a 991.2 Carrera S, a GT3, or a Turbo S, the fix is the same recipe pro shops use — a serviceable 2-piece iron rotor plus a track-rated pad. In our Tampa, FL shop we build this exact combination for 991 customers every month, and below we break down the parts that actually move the needle, with real specs, fitment, and pricing.

Why upgrade the brakes on a Porsche 911 (991)?

The 991 generation spans 2012–2019 and splits into two waves: the naturally aspirated 991.1 (2012–2016) and the twin-turbocharged 991.2 (2017–2019). Across every trim, the car shipped with two very different brake systems, and both have an upgrade problem. Cars with the optional Porsche Ceramic Composite Brake (PCCB) package use cross-drilled carbon-ceramic rotors that are fantastic when new but astronomically expensive to replace — a factory PCCB rotor pair can run well into five figures once they wear out or crack from track heat cycling. Cars on standard steel brakes are cheaper to service, but the OE one-piece iron rotors and comfort-biased pads fade quickly during back-to-back sessions at tracks like Sebring or Daytona.

The modern answer is a floating 2-piece iron rotor: a cast-iron friction ring bolted to a lightweight aluminum center hat with stainless drive pins that let the ring expand under heat without warping. This design sheds heat faster than a solid one-piece rotor, trims rotational and unsprung weight — the mass a suspension and drivetrain feel most — and, critically for PCCB cars, converts an unserviceable ceramic disc into a rotor whose ring you can replace on its own for a few hundred dollars instead of buying a whole new assembly. That is why 2-piece iron conversion is the single highest-value brake move on a 991.

What to look for in a 991 brake upgrade

Not every brake part is worth the money on a car this capable. When we spec a 991 brake package at NLP Performance, we prioritize four things:

  • Direct caliper fitment: the best rotors bolt to the factory Brembo calipers and use the OE pad shape, so there is no bracket engineering or caliper swap.
  • Serviceable 2-piece design: replaceable friction rings mean you rebuild the rotor for a fraction of a new assembly — the whole point of converting away from PCCB.
  • Slotted, directional faces: slots de-gas the pad and keep the bite consistent lap after lap; curved internal vanes must be handed left/right for correct cooling airflow.
  • Matched pad compound: a race pad like the EBC RP-1 unlocks the rotor's thermal headroom; a comfort pad wastes it.

How do you tell if your 991 has PCCB or iron brakes?

Look at the caliper color. Porsche paints Ceramic Composite Brake (PCCB) calipers bright yellow, while iron-brake cars wear black calipers on the base Carrera, red on the S and GTS, and silver on some Turbo models. If your 991 has yellow calipers, you are on carbon-ceramic and want the GiroDisc "w/PCCB" iron-conversion rotors, which are cut to the ceramic pad shape so the factory caliper and pad stay in place. If your calipers are black, red, or silver, you are on iron rotors and can go straight to a race pad like the EBC RP-1, or step up to a 2-piece rotor sized for iron cars. Matching the part to your exact brake system is the single most common fitment mistake we correct at NLP Performance.

EBC Racing RP-1 front race brake pads for Porsche 911 991 Carrera S

EBC Racing RP-1 race compound pads matched to the 991's factory iron rotors.

The best Porsche 911 (991) brake upgrades

1. GiroDisc 991.2 Carrera 2-Piece Front Rotors — Best Overall

This is our top pick for the widest slice of 991 owners. The GiroDisc front rotor kit for the 991.2 Carrera and Carrera S replaces the factory PCCB carbon-ceramic front discs with a floating 2-piece iron rotor that uses the OE ceramic pad shape, so it drops onto the stock caliper with no adapters. You get a rebuildable rotor, better sustained-heat performance than the ceramics under real track load, and a price around $1,950 per axle set — versus five figures for a fresh set of factory PCCB rotors.

GiroDisc 2-piece iron-conversion front rotors for Porsche 911 Carrera 991.2 with PCCB

GiroDisc

911 Carrera (991.2) w/PCCB 2-Piece Slotted Front Rotors

$1,950.00
Part Number girA1-156
Fitment 2017–2019 911 Carrera / Carrera S (991.2) w/ PCCB
Design Floating 2-piece iron, slotted, replaceable rings
Shop Now at NLP Performance

What We Like

  • + Retires five-figure PCCB rotors for a rebuildable iron ring
  • + Bolts to the factory caliper, uses the OE ceramic pad shape
  • + Slotted 2-piece design manages track heat better than solid discs

Things to Consider

  • Iron adds a little weight back versus carbon-ceramic
  • Priced per axle — budget for front and rear together

2. GiroDisc 991 GT3 / GT3 RS / GT2 RS 2-Piece Front Rotors — Best for GT Cars

The 991 GT3, GT3 RS, and GT2 RS see the most brake heat of any 991, and their PCCB rotors are the most expensive to replace. GiroDisc's GT-car front kit uses the same floating 2-piece iron construction with the OE PCCB pad shape, so a track-driven GT3 can run a serviceable rotor that costs around $1,950 a set instead of scrapping cracked ceramics. For an owner who does even a handful of track days a year, the math is decisive.

GiroDisc 2-piece front rotors for Porsche 911 GT3 GT3 RS GT2 RS 991

GiroDisc

911 GT3 / GT3 RS / GT2 RS (991) w/PCCB 2-Piece Front Rotors

$1,950.00
Part Number girA1-154
Fitment 2014–2019 911 GT3 / GT3 RS / GT2 RS (991) w/ PCCB
Design Floating 2-piece iron, directional slots
Shop Now at NLP Performance
EBC Racing RP-1 race brake pads for Porsche 911 991 GT3

Sintered RP-1 race pads give the GT3 consistent bite from the first hard stop.

3. GiroDisc 991 Turbo / Turbo S 2-Piece Rear Rotors — Best for AWD Grip

The 991 Turbo and Turbo S put down enormous corner-exit speed, and their rear brakes work harder than most owners expect. GiroDisc's rear rotor kit for the 991 Turbo (excluding PCCB cars) brings the same 2-piece iron construction to the back axle at around $1,750 a set, restoring fade resistance and giving you a serviceable rear rotor to match a front upgrade.

GiroDisc 2-piece rear rotors for Porsche 911 Turbo Turbo S 991

GiroDisc

911 Turbo / Turbo S (991, excl. PCCB) 2-Piece Rear Rotors

$1,750.00
Part Number girA2-155
Fitment 911 Turbo / Turbo S (991, excludes PCCB)
Design Floating 2-piece iron rear, slotted
Shop Now at NLP Performance

4. EBC Racing RP-1 Front Pads (991 Carrera S) — Best Track Pad

Rotors alone will not stop fade if the pad cooks. The EBC Racing RP-1 is a full-race, aramid-based sintered compound designed to hold friction at sustained track temperatures where a street pad glazes. For a 991 Carrera S 3.8L on iron rotors, a set runs about $350 and transforms brake feel under repeated heavy braking. These are track-focused pads — expect more cold-morning noise and dust than an OE pad.

EBC Racing RP-1 front race brake pads for Porsche 911 991 Carrera S 3.8L

EBC

Racing RP-1 Front Race Pads — 911 Carrera S 3.8L (991)

$351.11
Part Number DP82144RP1
Fitment 911 Carrera S 3.8L (991), iron rotors
Compound RP-1 full-race sintered
Shop Now at NLP Performance

5. EBC Racing RP-1 Front Pads (991 GT3) — Best GT3 Track Pad

For the 991 GT3 running iron discs, EBC's RP-1 in the GT3-specific shape gives the same race-compound bite tuned to the GT3's larger front brake. At roughly $350 a set it is the cheapest meaningful upgrade you can make to a track-driven GT3, and it pairs naturally with a GiroDisc 2-piece rotor for a full front brake refresh.

EBC Racing RP-1 front race brake pads for Porsche 911 991 GT3

EBC

Racing RP-1 Front Race Pads — 911 GT3 (991)

$351.11
Part Number DP82206RP1
Fitment 2013–2015 911 GT3 (991), iron rotors
Compound RP-1 full-race sintered
Shop Now at NLP Performance

Porsche 911 (991) brake upgrades compared

Here is how the five upgrades stack up by type, ideal use, and 991 fitment. Rotors are priced per axle set; pads are priced per axle.

Kit Type Best For 991 Fitment Price
GiroDisc 991.2 Carrera Front RotorsTop Pick 2-piece iron rotor PCCB delete, street + track 2017–2019 Carrera / S $1,950.00
GiroDisc GT3 / RS Front Rotors 2-piece iron rotor GT-car track duty 2014–2019 GT3 / RS $1,950.00
GiroDisc Turbo / Turbo S Rear Rotors 2-piece iron rotor Turbo AWD rear grip Turbo / Turbo S (excl. PCCB) $1,750.00
EBC Racing RP-1 Pads (Carrera S) Race brake pad Track pad on iron rotors Carrera S 3.8L $351.11
EBC Racing RP-1 Pads (GT3) Race brake pad GT3 track pad 2013–2015 GT3 $351.11

2-piece rotors vs race pads: which comes first?

Start with pads if your rotors are healthy and your only complaint is fade, and start with 2-piece rotors if you are on worn PCCB discs or want a lasting, serviceable brake. A set of EBC RP-1 pads at around $350 is the cheapest way to fix a 991 that fades on track, and it can be done in an afternoon. But if your factory ceramics are worn or cracked, converting to GiroDisc 2-piece iron rotors around $1,750–$1,950 an axle is the move that pays for itself — you get a rotor you can rebuild with just a replacement ring, instead of buying a complete PCCB assembly every time. Most of our 991 track customers end up doing both: iron rotors up front for durability, RP-1 pads for bite.

Top Pick Key Specs

2-Piece
Floating iron design
OE Fit
Stock caliper & pad shape
$1,950
Front axle set
Rebuildable
Replace the ring only
EBC Racing RP-1 race pad backing plate detail for Porsche 911 991

RP-1 pads bed onto the 991's factory Brembo calipers with no bracket changes.

EBC Racing RP-1 brake pad set for Porsche 911 991 GT3 track use

A full RP-1 front pad set is the lowest-cost way to add track-grade bite to a 991.

Frequently Asked Questions

What are the best brake upgrades for a Porsche 911 (991)?

The best 991 brake upgrade is a GiroDisc 2-piece iron-conversion rotor paired with a track-rated pad like the EBC Racing RP-1. The GiroDisc 991.2 Carrera front rotor set costs around $1,950 an axle, bolts to the factory caliper, uses the OE PCCB pad shape, and can be rebuilt by replacing just the friction ring — making it the highest-value upgrade for the 2012–2019 911.

Can you replace PCCB carbon-ceramic rotors with iron on a 991?

Yes. GiroDisc 2-piece iron-conversion rotors are made specifically for 991 cars equipped with PCCB, using the ceramic pad shape so they drop onto the factory calipers. For roughly $1,750–$1,950 per axle you replace unserviceable carbon-ceramic discs — which can cost well into five figures per pair from Porsche — with a rebuildable iron rotor.

Are 2-piece rotors worth it on a street-driven 991?

For a street-only 991 with healthy factory brakes, 2-piece rotors are a nice-to-have; for a track-driven car or one on worn PCCB discs, they are worth it. The floating 2-piece design sheds heat faster, trims rotational and unsprung weight, and its replaceable ring dramatically lowers long-term rotor cost versus one-piece iron or carbon-ceramic replacements.

Do EBC RP-1 pads work on the street?

EBC Racing RP-1 pads are a full-race sintered compound built for sustained track temperatures, so they are best reserved for track and aggressive canyon use. They deliver strong, consistent bite when hot, but on cold mornings expect more noise and dust than an OE-style pad. Many 991 owners keep a street pad and swap to RP-1 for track days.

Which 991 models do these brake upgrades fit?

These upgrades cover the 991 range from 2012 to 2019: the GiroDisc Carrera rotor kit fits 2017–2019 991.2 Carrera and Carrera S with PCCB, the GT3 kit fits 2014–2019 GT3/GT3 RS/GT2 RS with PCCB, and the Turbo rear kit fits 991 Turbo and Turbo S without PCCB. EBC RP-1 pads are offered in Carrera S 3.8L and GT3 shapes for cars on iron rotors.

How do I bed in new 991 rotors and pads?

Bed new pads and rotors with a series of moderate-to-firm stops from about 60 to 10 mph, allowing cooling between them, without coming to a complete stop that can imprint pad material. This transfers an even layer of pad friction material onto the rotor face for consistent bite and long rotor life. Our Tampa, FL install team beds every 991 brake job on delivery so the car drives away ready.

Ready to Upgrade Your 991's Brakes?

Shop GiroDisc 2-piece rotors, EBC race pads, and thousands more performance parts at NLP Performance.

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