Fabspeed Porsche 992 GT3 / GT3 RS / Speedster Valvetronic Nordschleife Cat-Back Exhaust System (2022+)
Fabspeed Valvetronic Nordschleife Cat-Back for the Porsche 992 GT3 / GT3 RS / Speedster (2022+). Full PSE push-button valvetronic compatibility, aerospace-grade Helical UK valves, signature 70mm cast X-pipe, TITANIUM investment-cast inlet funnels. No tune required. 6 tip finishes, GPF-compatible variants available.
or as low as $473.66/mo with Affirm
Fabspeed Motorsport · Valvetronic Nordschleife · PSE-Compatible
Valvetronic Cat-Back Exhaust For The 992 GT3, GT3 RS & Speedster
Fabspeed’s flagship Valvetronic Nordschleife Cat-Back is the rare aftermarket system that fully retains BMW — sorry, Porsche’s — PSE valvetronic push-button functionality. Aerospace-grade Helical Limited UK ISO 9001 valves, signature cast 70mm 2.75″ X-pipe, and TITANIUM investment-cast inlet funnels. The result: a true exotic GT3-cup-style sports car sound, dyno-validated power, and OEM-perfect fitment from a Solidworks model built off a CREAFORM 700 3D laser scan of the original.
Why The Nordschleife Cat-Back
Valvetronic Push-Button Intact
Most aftermarket Cat-backs sacrifice the OEM PSE button to make valves work. Fabspeed engineered around the OE harness and ECU calibration so PSE Quiet/Sport modes function exactly as Porsche intended — just with the Fabspeed soundtrack and dyno-proven power gains.
Aerospace-Grade Reliability
Helical Limited UK ISO 9001 exhaust valves. The same valve supplier used by Porsche, Ferrari, McLaren, Aston Martin, Pagani, Koenigsegg, and Gordon Murray Automotive. Not the $50 made-in-Asia valves on lesser systems — these are aerospace quality, built to last the life of the car.
Signature 70mm / 2.75″ Geometry
Proprietary investment-cast 70mm (2.75″) X-pipe links both flat-six cylinder banks for exhaust scavenging and resonance defeat. CAD designed and dyno-validated against four prototypes. Delivers high-pitched GT3-cup sports car tone simple straight-pipe systems can’t match.
Dyno-Proven Power
Fabspeed Valvetronic Cat-Back vs stock 2022 992 GT3 baseline on Dynojet Research dyno (SAE smoothing 5):
- Stock 992 GT3 baseline
- 452.65 whp at 8,310 rpm · 324.26 ft·lb at 5,860 rpm
- With Fabspeed Valvetronic
- 457.01 whp at 8,310 rpm · 329.12 ft·lb at 5,600 rpm
- Mid-range gain (4,200 rpm)
- +14 whp / +17 ft·lb — where you actually drive on the street
- Peak gain
- +6 whp / +4 ft·lb at the top of the curve
- At the crank
- +16 HP / +17 ft·lb / −7 lbs weight savings
- Tune required
- No — gains achieved on stock ECU calibration
Construction & Engineering
- Material: Mandrel-bent T304 stainless steel, hand-formed in-house, TIG-welded throughout
- Inlet funnels: TITANIUM investment-cast, precision CNC-machined for OEM-perfect mating to factory headers
- X-Pipe: Proprietary 70mm (2.75″) investment-cast X-pipe — not a fabbed two-piece weld-up
- Valves: Helical Limited UK aerospace-grade, ISO 9001 certified, fully harness-compatible with OEM PSE
- Fitment validation: CREAFORM 700 Handscan 3D laser scan of OEM exhaust + flat-6 underside → full Solidworks 3D model → CAD-designed fixtures → OEM Porsche Motorsport tolerances
- Sound revisions: Four prototype systems built and tested; only the final design released
- Weight savings: −5 lbs / −2.3 kg vs stock OEM Cat-back
- PSE compatibility: Full retention of Porsche Sport Exhaust push-button functionality
See It Built & Hear It Run
Five Fabspeed Motorsport workshop videos covering the build process, sound, and walkthrough of the 992 GT3 Valvetronic Nordschleife system:
Installed: Real-World Examples
This emerald-green 992 GT3 in Fabspeed’s shop showcases multiple tip configurations available in the configurator above — the same exhaust system, four different aesthetic outcomes:
From left: underside install · polished SS · carbon fiber · brushed turn-down · polished closeup
Fabspeed vs OEM
Top: the Fabspeed Valvetronic Cat-Back. Bottom: the stock 992 GT3 OEM exhaust. Note the casting weight, restrictive geometry, and added complexity in the OEM — engineered for emissions compliance worldwide, not for sound or flow.
Configuration Pricing
All configurations ship at the same price — pick your tip aesthetic and confirm whether your car has a GPF (Gas Particulate Filter, OPF in some markets). 12 total combinations.
| Tip Type | Price | SKU (No GPF) | SKU (With GPF) |
|---|---|---|---|
| Carbon Fiber | $5,683.95 | FS.POR.992GT3.VLVCF | FS.POR.992GT3.VLVCF.GPF |
| Satin Black | $5,683.95 | FS.POR.992GT3.VLVB | FS.POR.992GT3.VLVB.GPF |
| Polished Stainless Steel | $5,683.95 | FS.POR.992GT3.VLVP | FS.POR.992GT3.VLVP.GPF |
| Brushed Single Wall Stainless | $5,683.95 | FS.POR.992GT3.VLVBS | FS.POR.992GT3.VLVBS.GPF |
| Brushed Stainless Turn Down | $5,683.95 | FS.POR.992GT3.VLVT | FS.POR.992GT3.VLVT.GPF |
| Titanium | $5,683.95 | FS.POR.992GT3.VLVTI | FS.POR.992GT3.VLVTI.GPF |
GPF Question: If your 992 GT3 / GT3 RS has a Gas Particulate Filter (GPF) — common on EU-spec cars and some markets — pick “Yes” so Fabspeed ships the GPF-compatible variant. US-market cars typically don’t have GPF; pick “No”. Wrong selection requires a re-ship and adds 1–2 weeks. Not sure? Email us your VIN and we’ll verify before processing your order.
Fitment
| Make | Model | Years | Notes |
|---|---|---|---|
| Porsche | 992 GT3 | 2022+ | All trims worldwide |
| Porsche | 992 GT3 Touring | 2022+ | All trims worldwide |
| Porsche | 992 GT3 RS | 2023+ | All trims worldwide |
| Porsche | 992 Speedster | 2024+ | When released — same Cat-back fitment |
Quick Specs
- Make · Model
- Porsche 992 GT3 / GT3 RS / Speedster (2022+)
- Type
- Valvetronic Cat-Back — full PSE-compatible system with Helical UK valves
- Material
- T304 stainless, mandrel-bent, TIG-welded; titanium investment-cast inlet funnels
- X-Pipe
- Proprietary 70mm (2.75″) investment-cast
- Tip Options
- 6 finishes (Carbon Fiber, Satin Black, Polished SS, Brushed Single Wall, Brushed Turn Down, Titanium)
- GPF Versions
- Available with or without GPF compatibility (specify at order)
- PSE Compatible
- Yes — retains factory push-button valvetronic operation
- Tune required
- No
- Power gain
- +16 HP / +17 ft·lb at the crank (peak +14 whp / +17 ft·lb wheel)
- Weight savings
- −5 lbs / −2.3 kg (Fabspeed-source spec) · −7 lbs total system reduction
- Lead time
- ~1 week from Fabspeed Motorsport USA
- Warranty
- Fabspeed Motorsport limited
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