---
product_id: 633461805
title: "2015-2020 Unpainted Gurney Flap Wickerbill Rear Trunk Spoiler Extension Add-on for Subaru WRX STi Factory OEM Trunk Boot Lip Spoiler Wing 2016 2017 2018 2019"
brand: "optimal co"
price: "$587.46"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/633461805-2015-2020-unpainted-gurney-flap-wickerbill-rear-trunk-spoiler-extension
store_origin: US
region: United States of America
---

# Boosts aerodynamic efficiency instantly Lightweight high-impact ABS material (590g) Direct OEM fit for Subaru WRX STI 2015-2020 2015-2020 Unpainted Gurney Flap Wickerbill Rear Trunk Spoiler Extension Add-on for Subaru WRX STi Factory OEM Trunk Boot Lip Spoiler Wing 2016 2017 2018 2019

**Brand:** optimal co
**Price:** $587.46
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your Subaru’s style and performance—because your ride deserves the edge.

## Quick Answers

- **What is this?** 2015-2020 Unpainted Gurney Flap Wickerbill Rear Trunk Spoiler Extension Add-on for Subaru WRX STi Factory OEM Trunk Boot Lip Spoiler Wing 2016 2017 2018 2019 by optimal co
- **How much does it cost?** $587.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/633461805-2015-2020-unpainted-gurney-flap-wickerbill-rear-trunk-spoiler-extension)

## 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:** Enhance your ride’s downforce and stability with a sleek Gurney flap design that turns heads and corners.
- • **Effortless Installation:** Automotive-grade double-sided adhesive tape included for a no-fuss, no-drill upgrade.
- • **Featherweight Durability:** Crafted from high-impact ABS, this spoiler extension adds strength without weighing you down.
- • **Seamless OEM Compatibility:** Perfectly engineered to snap onto your Subaru WRX STI factory spoiler without any modifications.
- • **Unmatched Quality Assurance:** Proudly made in the USA with precision and premium materials that outclass competitors.

## Overview

The Optimal Co Gurney Flap Wickerbill Rear Trunk Spoiler Extension is a lightweight, durable ABS add-on designed exclusively for Subaru WRX STI models from 2015 to 2020. It installs easily with included automotive-grade adhesive tape, requiring no modifications, and enhances your vehicle’s aerodynamic efficiency while maintaining OEM quality standards.

## Description

Optimal Co 2015-2020 Unpainted Gurney Flap Wickerbill Rear Trunk Spoiler Extension Add-on for Subaru WRX STi Factory OEM Trunk Boot Lip Spoiler Wing 2016 2017 2018 2019

## Features

- Direct fit for Subaru OEM WRX STI 2015-2020 factory spoiler. (spoiler not included)
- Made of high impact ABS material to be light weight and durable. High quality that is unmatched with other manufacturers.
- The spoiler is installed by automotive grade double sided adhesive tape (included). Easy installation, no modification required.
- Perfect addition that will improve the aerodynamic efficiency to your vehicle.
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Installation Type | Self-Adhesive |
| UPC | 787794937834 |
| Manufacturer | Optimal |
| Package Dimensions | 118.36 x 15.24 x 6.6 cm; 590 g |
| Item model number | SBWRXGF15 |
| Manufacturer Part Number | VGTRNK15-21STI |
| Country of Origin | USA |
| Item Weight | 590 g |

## Product Details

- **Brand:** Optimal Co
- **Exterior Finish:** Unpainted
- **Material:** Acrylonitrile Butadiene Styrene (ABS)
- **Vehicle Service Type:** Car
- **Auto Part Position:** Rear

## Images

![2015-2020 Unpainted Gurney Flap Wickerbill Rear Trunk Spoiler Extension Add-on for Subaru WRX STi Factory OEM Trunk Boot Lip Spoiler Wing 2016 2017 2018 2019 - Image 1](https://m.media-amazon.com/images/I/61WwH1rHO0L.jpg)

## Questions & Answers

**Q: Does this need to be painted or can it be used as is?**
A: I used it like this

**Q: Does it fit a 2021 wrx sti?**
A: Yeah it does ! Just put a good amount of 3m tape on it, because the wind hits hard over.

**Q: How long is the Gurney Flap**
A: I'm not exactly sure but it fits on it.

**Q: Would this fit on the 2022 wrx**
A: I don't think so

## Frequently Bought Together

- 2015-2021 Unpainted Gurney Flap Wickerbill for Subaru WRX STi Factory OEM Trunk Boot Lip Spoiler Wing Rear Trunk Spoiler Extension Add-on 2016 2017 2018 2019 2020
- PQY 2PCS Spoiler Wing Stabilizer Compatible with Subaru WRX STi Sedan 2015-2019 Spoiler Wing Stiffi Support Rally
- HK5 ABS OE-Style Rear Trunk Lid Spoiler Wing Compatible with 2015-2021 Subaru WRX STI, 2016 2017 2018 2019 2020 (Painted Blue)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-19*