991.2 GT3RS Splitter Reinforcement Instructions
This document contains information regarding reinforcement of the 991.2 GT3RS splitter.
Created by: Anthony Butay date: 05/24/2021
Splitter installation
- Remove the GT3RS splitter from the car in order to start the reinforcement process of the 991.2 GT3RS splitter. Below are the measurements from the reference slots shown in the pictures below to determine where holes need to be drilled in the splitter blade. A 7.5mm or 5/16” drill bit will be needed to drill through the splitter blades.

Splitter shown below with holes drilled in it.
2. Now we can set the splitter aside and move onto installing the straps onto the pedestrian bar. The approximate location of the metal zip ties are below. The metal zip ties (McMaster Carr P#6898K65) will need to be fed over the aluminum bar going across the car, but underneath the plastic pieces. *not actual zip ties shown below.
3. Now get someone to help you reinstall the splitter or balance the splitter on a screw jack for re- installation. As the splitter is going up on the car, the metal zip ties need to be fed through the splitter. Below is a picture of the splitter on the car with the zip ties fed through the splitter.
4. Push up on the front edge of the splitter with a screw jack or other method, the goal here is to reduce the amount of sag that the front bumper and assembly has on the front edge of the splitter. Tighten the straps as tight as you can, a pair of needle nose pliers can be used to help hold the mechanism as you pull the metal zip tie tight. Then you can release the screw jack after they are tightened. Trim the metal zip ties so there is about .25”-.5” of leftover strap past the clamping mechanism.