Get your 718 GT4 Spyder GTS to sound as it should! Gain 30 HP to the wheels , Lose Weight and get the sounds you're craving, all with a lifetime warranty!  

The Dundon D4 Package is the culmination of our work on perfecting and guiding the pressure waves into and out of the 3.8L Engine resulting in 72lbft max gains over stock and 100whp at the rev limiter.

Our GT3 Muffler Adapter kit comes with everything you need to mount a GT3 muffler on your 981 except the muffler and tips! 

Using science and engineering to increase performance is what we do.  The Dundon 981/991 3.8L Intake Runners are no exception. Through careful design of the intake runner geometry we were able to add 30+ peak wheel horsepower on top of our already potent race headers and...

 Includes: Cobb Accessport - $1495 Dundon ProTune - $795

Dundon Pro Tune including 1 revision.

Dramatically improve rear end grip at speed with our Valkyrie swan neck wing.  The wing and full aero kit were designed in CFD to greatly improve the vehicle's performance around the track.  The wing alone has the ability to dramatically reduce lap times (2.5...

Dive planes, also referred to as canards, allow you to shift your car's aero balance forward, possibly aiding you and your setup in balancing out a large rear wing or diffuser.

Dundon Motorsports is proud to offer a stunning and functional bit of aerodynamic aid for your GT4, a carbon fiber Gurney Flap.  This allows for additional downforce with limited increase in drag. We offer the Gurney Flap in Gloss or Matte clear. 

We've been searching for a quality 3rd gear replacement for the GT4 and found it in Holinger, the manufacturer of gears for Porsche Racing!

Holinger (Drexler) Pro Diff for the 981S and GT4

We've been searching for a quality close ratio gear set for the GT4 and found it in Holinger, the manufacturer of gears for Porsche Racing! No modifications to the gear box, direct fit, splined synchros (no more 3rd gear failures) and lower ratios to...

Upgrade your car's handling with DSC! This revolutionary device turns your passive PASM system into an active suspension system with multiple personalities. The DSC module monitors acceleration, brake application, G forces, and many other parameters to tune your car's handling in milliseconds.

We’re proud to offer the strongest, safest, best designed 981 and 718 / GT4 Porsche Cayman bolt in roll bar on the market. We design all our bars with safety as the first concern. Don’t fall for the less expensive bars on the market....

Dundon Sub-Belt Mount Set - For 981/991/718/992 Bucket Seats   Enables the use of 6-point harnesses by providing an attachment point for the sub-belts.

Keep your harnesses rolled up nice and neat.  Our Harness Reels are available in 1.5" (typical aftermarket bar size) and 41mm (typically Porsche Club Sport bar size). All are anodized black

Dundon Windshield Banner!  Show your love for your favorite Porsche Performance Parts!

We were never happy with the "paste on" wind deflectors and the other styles with plastic "guts" that just either strip out the screw hole and fly off, or debond and fly off.  So we made the ultimate wind deflector for 718/981/991 cars.  CNC machined...

Add Power and great sound and experience your Porsche’s true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to...

Bring your 3.4L Boxster or Cayman to the next level with our Intake Runners. When combined with our race headers and custom tune, you'll see gains of 60+hp and 40+trq at the wheels!