Description

Fiesta ST180 spoiler, Delta S RR spoiler, Ford Fiesta ST180 upgrades, performance spoilers, aftermarket car parts, Precision Parts Hub, aerodynamic car accessories

Premium Aerodynamic Upgrade for Your ST180

The Delta S RR Model spoiler transforms your Ford Fiesta ST180’s performance and aesthetics with its race-inspired design. Engineered for enthusiasts who demand both form and function, this spoiler delivers measurable improvements in high-speed stability and rear downforce.

Key Benefits:

+28% Rear Downforce at highway speeds compared to stock
Wind tunnel-tested aerodynamic profile
Direct bolt-on replacement with OEM-fit precision
Constructed from UV-resistant polyurethane with carbon fiber option
Available in primed, gloss black, or color-matched finishes

View Technical Specifications

The Engineering Behind the Delta S RR Spoiler

Precision Parts Hub collaborated with aerodynamic specialists to develop the Delta S RR spoiler specifically for the Fiesta ST180’s chassis dynamics. Through computational fluid dynamics (CFD) analysis and real-world track testing, we optimized the spoiler’s:

Airfoil Profile

The unique curved design creates a low-pressure zone that pulls the rear tires into the pavement without creating excessive drag (Cd increase of just 0.02).

Mounting System

Uses reinforced aluminum brackets that distribute load across the trunk lid’s structural points, preventing stress fractures common with inferior spoilers.

End Plate Design

Vertical end plates reduce wingtip vortices by 37%, maintaining clean airflow to the spoiler’s entire surface area.

Measurable Performance Gains

Independent testing by European Automotive Journal recorded these improvements with the Delta S RR spoiler installed on a stock Fiesta ST180:

Speed	Rear Downforce Increase	Lap Time Improvement
60 mph	12 lbs	N/A
80 mph	22 lbs	-0.8 sec/mile
100 mph	38 lbs	-1.4 sec/mile

These gains are particularly noticeable during high-speed cornering where the spoiler helps maintain rear grip, allowing for earlier throttle application on exit.

Professional Installation Guide

While designed for straightforward installation, we recommend these professional tips for optimal results:

Step 1: Preparation

Clean the trunk surface with isopropyl alcohol and mark drilling points using the included template. For non-OEM trunks, verify structural integrity first.

Step 2: Hardware Installation

Use the provided butyl tape to create a watertight seal before securing brackets. Torque bolts to 18 ft-lbs using a crisscross pattern.

Step 3: Alignment

Check symmetry by measuring from spoiler ends to wheel arches. The leading edge should parallel the roofline within ±2mm.

Note: Professional installation recommended for warranty validation. Precision Parts Hub offers certified installer referrals nationwide.

Vehicle Compatibility

The Delta S RR spoiler is specifically designed for:

2013-2017 Ford Fiesta ST180 (MK7)
Requires factory spoiler removal or blank trunk lid
Not compatible with ST-Line or standard Fiesta models without reinforcement

Customer Experiences

“Transformed the car’s highway manners” ★★★★★

“After installing the Delta S RR, my ST180 feels planted at speeds where it used to get floaty. The quality is exceptional – no vibrations or flex even at 110 mph on track days.” – Marcus T., verified buyer

“Perfect OEM+ look” ★★★★★

“Got the color-matched version and people assume it’s a factory option. The subtle aggressive shape gets compliments without looking boy-racer.” – Sarah K., verified buyer

Frequently Asked Questions

Does this spoiler require trunk reinforcement?

No additional reinforcement is needed for ST180 applications. The mounting system distributes load across factory structural points.

Can I install this myself?

While technically possible, we recommend professional installation to ensure proper alignment and sealing. Incorrect installation can affect performance and void warranty.

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