---
product_id: 180683295
title: "2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020"
brand: "optimal co"
price: "€ 184.46"
currency: EUR
in_stock: true
reviews_count: 6
url: https://www.desertcart.pt/products/180683295-2015-2021-unpainted-side-skirts-splitter-lip-compatible-with-subaru
store_origin: PT
region: Portugal
---

# Bolt-on fit for Subaru WRX STI 2015-21 Lightweight 1.9 lbs ABS construction Optimizes airflow to boost downforce 2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020

**Brand:** optimal co
**Price:** € 184.46
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your WRX STI’s stance and performance—because average is not an option.

## Quick Answers

- **What is this?** 2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020 by optimal co
- **How much does it cost?** € 184.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/180683295-2015-2021-unpainted-side-skirts-splitter-lip-compatible-with-subaru)

## Best For

- optimal co enthusiasts

## Why This Product

- Trusted optimal co brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Aerodynamic Edge:** Reduces undercar airflow turbulence, enhancing stability and downforce for a sharper driving experience.
- • **Installation Ready Kit:** Comes with an installation kit; professional fitting recommended to unlock full performance potential.
- • **Complete Side Skirt Set:** Includes 4 pieces (left and right sides) for a balanced, aggressive rocker panel extension look.
- • **Durable Lightweight Build:** Crafted from high-impact ABS material, combining strength with minimal weight to maintain performance.
- • **Precision Fit for WRX STI:** Seamlessly designed for 2015-2021 Subaru WRX STI 4-door sedans, ensuring a flawless bolt-on installation.

## Overview

This unpainted side skirt splitter lip is engineered specifically for Subaru WRX STI 4-door sedans (2015-2021). Made from durable, lightweight ABS, it improves aerodynamic efficiency by redirecting airflow to increase downforce. The bolt-on design includes a full 4-piece set with an installation kit, making it the perfect upgrade for drivers seeking enhanced style and performance.

## Description

2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020

## Features

- ✅Compatible with Subaru WRX STI 4 Door Sedan 2015 -2021 Sport, Sport-Tech, Premium, Limited
- ✅Installation kit included, may require additional hardware depending on the vehicle condition. Professional installation is highly recommended. Package includes: 1 side skirt per 2 pieces, total of 4 pieces (Left and right side).
- ✅The side skirt is able to reduce the wind flows underneath your car and redirect the airflow to go around the car to increase the downward force.
- ✅Made of high impact ABS material to be light weight and durable. High quality that is unmatched with other manufacturers.
- ✅Perfect addition to your vehicle that will improve aerodynamic efficiency.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Auto Part Position | Left, Right |
| Installation Type | Bolt-On |
| UPC | 787794937827 |
| Manufacturer | Optimal |
| Item Weight | 1.9 pounds |
| Package Dimensions | 48.5 x 4.3 x 2.4 inches |
| Manufacturer Part Number | SBWRXSK15 |

## Product Details

- **Color:** Unpainted
- **Brand:** Optimal Co
- **Exterior Finish:** Unpainted
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Vehicle Service Type:** Compatible with Subaru WRX STI 2015 -2021

## Images

![2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020 - Image 1](https://m.media-amazon.com/images/I/61C9eop2BHL.jpg)
![2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020 - Image 2](https://m.media-amazon.com/images/I/51WnUR+MHYL.jpg)
![2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020 - Image 3](https://m.media-amazon.com/images/I/31MKaHfyLLL.jpg)
![2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020 - Image 4](https://m.media-amazon.com/images/I/41zpAScpNDL.jpg)
![2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020 - Image 5](https://m.media-amazon.com/images/I/41Nf6xEpA6L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does it fit a 2017 wrx?**
A: I put it on a 2017 WRX Limited and it fit fine. Its not perfect but it works.

**Q: Do this fit 2019 sti?**
A: Yes, it fits 2019 Subaru STi.

## Customer Reviews

### ⭐⭐⭐⭐⭐ WRX 23 it’s good fit
*by S***S on May 11, 2024*

Good fit ease too installation

### ⭐⭐⭐ Looks good but install is hard
*by T***E on February 4, 2022*

It looks alright can’t get a perfect fit which is expected for the price but it was kinda ridiculous on how to install. They only give you drill in screws and no starter holes bore directions that are accurate. Spend your money on something more quality.

### ⭐⭐⭐⭐ The seam is VERY noticeable
*by L***Y on February 28, 2020*

If you were going to paint and Bondo and sand these they would be awesome. But being made of ABS plastic, there were mold marks and rough edges everywhere, and the seam is NOT flush. I chose not to install them, they look very very cheap compared to the OE.

## Frequently Bought Together

- 2015-2021 Unpainted Side Skirts Splitter Lip Compatible with Subaru WRX STI 4 Door Sedan Sport, Sport-Tech, Premium, Limited Rocker Panel Extension Bodykit 2016 2017 2018 2019 2020
- ECOTRIC Rear Bumper Valance Lip Spoiler Compatible with 2015-2021 Subaru WRX STI Rear Spat Bumper Valance
- Front Bumper Lip Compatible with 2015-2017 Subaru WRX STI, V-Limited Style Black PP Front Lip Finisher Under Chin Spoiler Add On by IKON MOTORSPORTS

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pt/products/180683295-2015-2021-unpainted-side-skirts-splitter-lip-compatible-with-subaru](https://www.desertcart.pt/products/180683295-2015-2021-unpainted-side-skirts-splitter-lip-compatible-with-subaru)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-13*