iDEAS Valved Mid and Rear Exhaust, GT3 (991.1 / 991.2)
Stainless system at 25.8 kg against 40.4 kg stock, with a valve driven by a colour LCD head unit rather than the factory switch.
Exhaust In production confidence: medium
Manufacturing
| Manufacturer | ASPEC (爱斯派克) |
|---|---|
| Origin | 🇨🇳 China Manufactured here ASPEC, China. |
| Process | Fabricated / Welded |
| Additively manufactured | No |
| Material | Stainless Steel 304L |
| Notes | Retains the catalyst section, replaced with high flow. iDEAS is a wireless remote, LCD display and receiver unit; a national invention patent was filed for it in 2013. |
Published figures
| Weight | 25.8 kg |
|---|---|
| OEM weight | 40.4 kg |
| Weight saving | 36% |
| Basis | Published by the manufacturer; not independently verified. |
| Notes | 14.6 kg saved. Stainless rather than titanium, so packaging and section design are doing the work here rather than material. |
Fitment
| 991.1 | GT3, GT3 RS |
|---|---|
| 991.2 | GT3, GT3 RS 3.8 and 4.0 litre. |
Road use. High-flow catalyst retained rather than deleted; verify local emissions compliance.
Sources
- 保时捷 Porsche 911 GT3 2013+ 3.8L/4.0L 中尾段 — ASPEC 爱斯派克, accessed 2026-08-17