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Your Vehicle 2018 Porsche 911 991 GT3 Coupe H6 4.0L

2018 Porsche 911 991 GT3 Coupe H6 4.0L Performance Parts & Upgrades

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ES#4487639 - ECU-40L-9912-GT3 - APR ECU Upgrade - 4.0L GT3 (991.2) - Max gains of +33-69 WHP and +37-52 WFT-LBS depending on octane - APR - Porsche

Max gains of +33-69 WHP and +37-52 WFT-LBS depending on octane Call In Or Chat For Best Price!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
4487639
Mfg#:
ECU-40L-9912-GT3
In Stock
$2499.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4733194 - AWE991GT3CMD - AWE Center Muffler Delete - Porsche 997.2/991 GT3/RS - For those who want to increase tone, free up some power while dropping weight, but prefer to keep their factory side mufflers. - AWE - Porsche

For those who want to increase tone, free up some power while dropping weight, but prefer to keep their factory side mufflers. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
AWE - Corporate Logo
ES#:
4733194
Mfg#:
AWE991GT3CMD
Ships on Sep 14, 2026
ON SALE!
Starting at $1476.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3097414 - 103.9020A - 14+ 991 GT3, 991 GT3RS (Excluding PCCB) - Brembo - Porsche

2X Entries Into Our F80 M3 Sweepstakes

Brand:
Brembo - Corporate Logo
ES#:
3097414
Mfg#:
103.9020A
Ships in 3 Business Days
$2095.00 USD
Free Shipping
on orders $49 and up
ES#3097630 - 203.9003A - 14+ 991 GT3, 991 GT3RS (Excluding PCCB) - Brembo - Porsche

2X Entries Into Our F80 M3 Sweepstakes

Brand:
Brembo - Corporate Logo
ES#:
3097630
Mfg#:
203.9003A
Ships in 3 Business Days
$2095.00 USD
Free Shipping
on orders $49 and up
ES#4722146 - FS.POR.991CUP.SH - Fabspeed Porsche 991 GT3 Cup (2017 +) Sport Headers  - Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range. Fits all Porsche 991 GT3 Cup vehicles 2017+ - Fabspeed - Porsche

Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range. Fits all Porsche 991 GT3 Cup vehicles 2017+

Brand:
Fabspeed - Corporate Logo
ES#:
4722146
Mfg#:
FS.POR.991CUP.SH
Ships on Sep 17, 2026
$5719.99 USD
Free Shipping
ES#4680413 - 54090 - H&R H&R RS ID Springs - 2017-2019 Porsche 911 / 991 GT3  - Average lowering of 0.75-1.4"F and 0.75-1.4"R - H&R - Porsche

Average lowering of 0.75-1.4"F and 0.75-1.4"R We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
4680413
Mfg#:
54090
Ships in 3 Business Days
15% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$769.00

This product was last offered at the strikethrough price on
07-01-2026

$653.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4858598 - SSXPO131 - Milltek Exhaust Tips - GT-100 Polished - GT-100 Styled Dual Exhaust Tips, Made from 304L Aircraft Grade Stainless Steel - Polished Finish - Milltek Sport - Porsche

GT-100 Styled Dual Exhaust Tips, Made from 304L Aircraft Grade Stainless Steel - Polished Finish

Brand:
Milltek Sport - Corporate Logo
ES#:
4858598
Mfg#:
SSXPO131
Ships in 5 Business Days
$829.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4858600 - SSXPO132 - Milltek Exhaust Tips - GT-100 Cerakote Black - GT-100 Styled Dual Exhaust Tips, Made from 304L Aircraft Grade Stainless Steel - Cerakote Black Finish - Milltek Sport - Porsche

GT-100 Styled Dual Exhaust Tips, Made from 304L Aircraft Grade Stainless Steel - Cerakote Black Finish

Brand:
Milltek Sport - Corporate Logo
ES#:
4858600
Mfg#:
SSXPO132
Ships in 5 Business Days
$916.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4858601 - SSXPO133 - Milltek Exhaust Tips - GT-100 Brushed Titanium - GT-100 Styled Dual Exhaust Tips, Made from 304L Aircraft Grade Stainless Steel - Brushed Titanium Finish - Milltek Sport - Porsche

GT-100 Styled Dual Exhaust Tips, Made from 304L Aircraft Grade Stainless Steel - Brushed Titanium Finish

Brand:
Milltek Sport - Corporate Logo
ES#:
4858601
Mfg#:
SSXPO133
Ships in 5 Business Days
$1184.99 USD
Free Shipping
on orders $49 and up
ES#4858609 - SSXPO129 - Milltek Cat Back Exhaust System - Uses OE Tips - Made from 100% 304L aircraft grade stainless steel! Uses your factory tips. - Milltek Sport - Porsche

Made from 100% 304L aircraft grade stainless steel! Uses your factory tips.

Brand:
Milltek Sport - Corporate Logo
ES#:
4858609
Mfg#:
SSXPO129
Ships in 5 Business Days
$1118.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4658921 - E249_ABS - Rennline Ducktail Rear Spoiler - ABS Plastic - Add a modern spin on the classic Porsche design to your 991 - Rennline - Porsche

Add a modern spin on the classic Porsche design to your 991

Brand:
Rennline - Corporate Logo
ES#:
4658921
Mfg#:
E249_ABS
Ships in 5 Business Days
$375.00

This product was last offered at the strikethrough price on
08-07-2026

$300.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#2840320 - P7160101CBLK - Rennline 4-Piece Rubber Grip Pedal Set - Black/Cast Crest - Improve the look of your interior and fine-tune your driving experience - dead pedal accepts Porsche crest (sold separately)! - Rennline - Porsche

Improve the look of your interior and fine-tune your driving experience - dead pedal accepts Porsche crest (sold separately)!

Brand:
Rennline - Corporate Logo
ES#:
2840320
Mfg#:
P7160101CBLK
Ships in 5 Business Days
$275.00 USD
Free Shipping

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