GT4 RS Rear Diffuser Side Blade Templates
On the GT4 RS, Porsche added side blades or fins to the outer ends of the rear diffuser. This is presumably for aerodynamic or rock chip protection purposes. These blades can be added to your 718 GT4 or Spyder. For the most sturdy and correct installation, the diffuser must be removed and three holes on each end of the diffuser must be drilled.
These templates save you time and effort by pinpointing exactly where to drill holes on your diffuser when upgrading to the GT4 RS style rear diffuser side blades.
How to download:
1. Add the template to your cart.
2. Click CHECKOUT
3. A THANK YOU page will appear with a link to download within the next 30 days.
4. Print the template and verify that it printed at 100% actual size using measurements on the template.
5. Cut out the templates and use as shown in my YouTube How-To Video.
Please install carefully and verify all holes are in the appropriate location before drilling.
GT4 RS Rear Diffuser Side Blade Templates for 718 GT4 and Spyder
Install portion of the YouTube video HERE.
The hole markings can be done with the diffuser still installed on the vehicle but the diffuser must be removed to install the side blades.
- Tape the template to the end of the diffuser aligning the straight edge with the seam on the diffuser and extending along the edge until the tip.
- Mark the center of the holes with a sharp object.
- Remove template.
- Drill 6-10mm (5/16"-3/8") diameter holes in diffuser.