Types of Subaru Rear Spoilers
A Subaru rear spoiler is an automotive accessory mounted at the back of a vehicle to enhance both aesthetics and performance. These components play a crucial role in aerodynamics by reducing drag, increasing downforce, and improving stability—particularly at higher speeds. Additionally, they contribute significantly to a vehicle’s visual appeal, giving it a more aggressive or sporty appearance.
Subaru offers different types of rear spoilers across its model lineup, each designed with specific functionality and style in mind. Understanding these variations can help owners choose the best option for their driving needs and personal preferences.
Subaru WRX STI Rear Spoiler
The iconic WRX STI rear spoiler is a hallmark of the high-performance WRX STI model. This large wing-style spoiler is engineered with aerodynamic efficiency in mind, providing increased downforce and improved high-speed handling. Its bold design not only enhances the car's track-ready look but also contributes to superior cornering stability and reduced lift at speed.
Advantages
- Enhanced high-speed stability
- Improved aerodynamic downforce
- Distinctive aggressive styling
- Matches WRX STI performance character
Limitations
- May appear too aggressive for some tastes
- Limited practicality for non-performance drivers
- Higher cost compared to other spoilers
Best for: Performance enthusiasts, track-focused driving, WRX STI owners seeking authentic styling
Subaru BRZ Rear Spoiler
The BRZ rear spoiler typically features a sleek lip-style design positioned on the trunk lid. It serves dual purposes: enhancing aerodynamics by reducing drag and adding a subtle yet sporty touch to the vehicle's silhouette. The BRZ spoiler is especially effective at maintaining rear-end grip during spirited driving without compromising the car’s clean aesthetic.
Advantages
- Improves aerodynamic balance
- Enhances rear traction at highway speeds
- Complements the BRZ's compact sports coupe design
- Discreet yet stylish appearance
Limitations
- Less pronounced aerodynamic effect than larger spoilers
- Minimal impact on low-speed driving dynamics
Best for: Sports car enthusiasts, daily drivers looking for mild performance enhancement, BRZ owners wanting OEM-style upgrades
Subaru Legacy Rear Spoiler
The Legacy rear spoiler is an optional OEM accessory that adds a touch of sportiness to the midsize sedan. Typically a small lip-style spoiler mounted on the trunk lid, it helps reduce turbulence and improve airflow over the rear window. While primarily a cosmetic upgrade, it also provides minor aerodynamic benefits that contribute to better fuel efficiency and stability at highway speeds.
Advantages
- Enhances fuel economy through reduced drag
- Improves high-speed stability
- Adds a sportier profile to the sedan
- Easy to install as an aftermarket or OEM option
Limitations
- Minimal aerodynamic benefit in city driving
- Can be easily damaged in tight parking situations
Best for: Daily commuters, Legacy owners who value efficiency, those seeking a subtle sporty look
Subaru Outback Rear Spoiler
The Outback rear spoiler is a roof-mounted unit located at the top of the rear hatch. Designed to streamline airflow over the vehicle’s rear end, this spoiler helps reduce wind resistance and improve overall aerodynamics. Beyond performance enhancements, it reinforces the rugged yet refined image of the Outback while helping maintain rear visibility by minimizing dust accumulation on the rear glass.
Advantages
- Reduces wind noise and drag
- Improves fuel efficiency on long trips
- Helps keep rear glass cleaner
- Enhances the SUV's adventurous aesthetic
Limitations
- Potential clearance issues in tight garages
- May collect debris if not cleaned regularly
Best for: Adventure-oriented drivers, frequent highway travelers, Outback owners prioritizing utility and style
Subaru Forester Rear Spoiler
The Forester rear spoiler is another roof-mounted design, similar in concept to the Outback version but tailored specifically for the Forester’s dimensions and aerodynamic profile. Positioned atop the rear hatch, it helps manage airflow separation, which reduces wind resistance and improves stability at cruising speeds. It also adds a modern, sporty flair to the crossover’s exterior.
Advantages
- Minimizes wind resistance and turbulence
- Enhances highway driving comfort
- Contributes to a more dynamic appearance
- Compatible with roof rack accessories
Limitations
- Can interfere with garage height clearance
- May require reprogramming for compatibility with sensors
Best for: Family-oriented drivers, crossover enthusiasts, those seeking improved aerodynamics and styling
| Type | Design Style | Primary Function | Aesthetic Impact | Recommended Use |
|---|---|---|---|---|
| WRX STI | Large wing-style | High-speed stability & downforce | Aggressive, race-inspired | Track driving, performance tuning |
| BRZ | Lip-style | Reduced drag, improved grip | Sporty, understated elegance | Street performance, weekend drives |
| Legacy | Lip-style | Fuel efficiency, stability | Subtle sportiness | Daily commuting, highway travel |
| Outback | Roof-mounted | Wind resistance reduction | Rugged, adventure-ready | Off-road adventures, road trips |
| Forester | Roof-mounted | Aerodynamic optimization | Modern, dynamic | Family transport, outdoor excursions |
Expert Tip: When selecting a rear spoiler, consider your driving habits and environment. For example, a roof-mounted spoiler like those found on the Outback or Forester may offer minimal aerodynamic gains in city driving but can significantly improve highway fuel economy and stability on longer journeys.
Specifications and Maintenance of Subaru Rear Spoiler
Understanding Key Material Options
Subaru rear spoilers are manufactured using different materials to suit various performance needs, aesthetics, and budgets. Each material brings its own set of advantages:
ABS Plastic
A durable thermoplastic polymer commonly used in automotive applications due to its strength-to-weight ratio and resistance to impact and weathering.
Ideal for everyday driving conditions, ABS plastic maintains structural integrity under normal use and is resistant to common road chemicals and UV exposure when properly treated.
Carbon Fiber
A premium composite material known for being both lightweight and extremely strong. It’s often used in high-performance and racing vehicles to reduce weight while increasing rigidity.
Offers a sleek, aggressive appearance and excellent thermal stability, making it suitable for demanding environments where aerodynamic efficiency is crucial.
Fiberglass
An economical alternative that still provides good strength and lightness. Fiberglass spoilers offer flexibility in design and are relatively easy to manufacture.
While not as stiff or heat-resistant as carbon fiber, fiberglass remains a popular choice for custom builds and budget-conscious consumers who want visual enhancement and moderate performance gains.
Size and Dimensional Considerations
The physical dimensions of Subaru rear spoilers vary depending on the model and intended purpose. These measurements directly influence both aesthetics and aerodynamic performance:
| Dimension | Typical Range | Functional Impact |
|---|---|---|
| Length | 40–70 inches | Determines coverage across the trunk; longer spoilers provide more surface area for downforce generation |
| Height | 4–8 inches | Higher spoilers create greater air deflection and downforce but may increase drag at higher speeds |
| Width | Matches vehicle's trunk width | Ensures proper fitment and symmetrical airflow distribution |
Spoiler Design Types
Subaru rear spoilers come in multiple design configurations, each serving a unique functional and aesthetic purpose:
Lip Spoiler
A low-profile spoiler mounted along the edge of the trunk lid. It adds minimal visual height but improves aerodynamics by smoothing airflow over the rear window.
Best suited for daily drivers and those seeking a subtle performance upgrade without altering the car's silhouette significantly.
Raised Spoiler
Features vertical fins or a pronounced upward curve. This design enhances downforce at highway speeds and improves vehicle stability during cornering.
Popular among sport-oriented models like WRX STI, this style offers a more aggressive stance and increased aerodynamic benefit compared to lip spoilers.
Adjustable Spoiler
Allows manual or sometimes automatic adjustment of the spoiler angle. This enables tuning of aerodynamic properties based on driving conditions.
Found primarily on modified or competition-oriented Subarus, these spoilers offer maximum customization for track performance and handling precision.
Finish Options and Aesthetic Customization
Subaru rear spoilers can be finished in various ways to complement your vehicle’s appearance:
- Painted to Match: Factory-painted spoilers blend seamlessly with the vehicle’s body color for a clean, integrated look.
- Natural Finish: Available in black or white, these allow for custom painting or wrapping if desired. Fiberglass and ABS plastic can also be left unpainted for a raw, race-inspired aesthetic.
- Matte vs Glossy: Some aftermarket options offer matte finishes for a modern, stealthy appearance, while glossy finishes enhance depth and reflectivity.
Mounting Systems and Installation Methods
There are several mounting methods available for Subaru rear spoilers, each with distinct advantages:
Bolt-on Mounting
Involves drilling and securing the spoiler with screws or bolts through the trunk lid or body panel. Offers the most secure attachment.
Recommended for performance applications where vibration and wind forces could compromise less permanent solutions.
Adhesive Tape Mounting
Uses heavy-duty double-sided tape for installation. Quick and non-invasive method ideal for temporary installations or lighter spoilers.
May degrade over time from UV exposure or extreme temperatures. Not recommended for large or tall spoilers exposed to significant wind pressure.
Hybrid Mounting (Bolts + Adhesive)
Combines mechanical fasteners with adhesive tape for enhanced durability and security. Commonly used in factory-installed spoilers.
This dual-method ensures longevity while allowing easier removal if needed later, making it a versatile option for many owners.
Maintenance Best Practices
While Subaru rear spoilers require minimal maintenance, regular care helps preserve their appearance and functionality:
- Regular Cleaning: Use a soft microfiber cloth, mild soap, and water to gently clean the surface. Avoid harsh solvents or abrasive compounds that can damage the finish.
- UV Protection: Apply a high-quality UV protectant every six months to prevent fading, especially for painted or natural-finish spoilers exposed to direct sunlight.
- Inspection Routine: Periodically check for loose hardware, cracks, warping, or signs of wear. Pay special attention to mounting points and seams.
- Avoid Overloading: Do not place heavy objects on the spoiler or use it as a step or seat. This can cause bending, cracking, or detachment.
- Timely Repairs: Address any damage immediately to prevent further deterioration and potential safety hazards. Small scratches can be touched up, while structural issues may require replacement.
Important: Always ensure that the spoiler is securely attached before driving. Loose or damaged spoilers can become airborne hazards at high speeds. If replacing one component, consider evaluating the entire mounting system for wear or fatigue to maintain long-term reliability.
How to Choose Subaru Rear Spoiler
Selecting the right Subaru rear spoiler involves more than just aesthetics—it directly impacts aerodynamics, fuel efficiency, and visual appeal. Whether you're outfitting a customer's vehicle for resale or performance purposes, understanding the nuances of size, style, material, functionality, and legal compliance is essential.
Subaru Rear Wing Selection
The rear wing significantly affects airflow dynamics at higher speeds, potentially improving stability and cornering grip. When selecting a Subaru rear wing, especially for resale value, consider how it integrates with the vehicle’s design and purpose.
- Size: Should proportionally match the trunk lid dimensions—oversized wings can obstruct visibility while undersized ones may not deliver noticeable aerodynamic benefits.
- Style: High-rise wings suit sporty builds (e.g., WRX STI), lip spoilers provide subtle elegance, and ducktail designs blend form and function.
- Material:
- Fiberglass: Lightweight and budget-friendly but prone to cracking under impact
- Carbon fiber: Extremely lightweight, durable, and premium-looking but costly
- Metal: Highly durable but heavier, which can affect acceleration and handling
- Functionality: Look for adjustable angle-of-attack features that allow tuning between downforce and drag reduction based on driving conditions.
- Climate considerations: UV-resistant coatings help prevent fading in sunny regions; water-channeling designs improve visibility in wet climates.
Key insight: A well-chosen rear wing enhances both curb appeal and driving dynamics when matched correctly to the vehicle’s intended use.
Subaru Rear Diffuser Integration
Rear diffusers work in tandem with front splitters and side skirts to manage airflow exiting beneath the vehicle, reducing turbulence and improving aerodynamic efficiency. They’re particularly valuable for high-performance Subarus where balanced airflow management matters most.
- Size compatibility: Larger diffusers suit vehicles with upgraded exhaust systems or track-focused setups; compact models work better for daily-driven vehicles.
- Design options: From OEM-style replacements to aggressive race-inspired designs featuring vortex generators.
- Material selection:
- ABS plastic: Cost-effective and easy to install but less rigid at high speeds
- Carbon fiber: Offers superior stiffness-to-weight ratio ideal for performance applications
- Metal: Typically used in rally-inspired builds for extreme durability
- Functional benefits: Properly designed diffusers reduce rear-end lift and improve high-speed stability.
- Climate adaptability: Textured surfaces help hide scratches from road debris, while sealed edges prevent snow and mud buildup.
Performance note: Carbon fiber diffusers offer optimal weight savings and rigidity for serious performance upgrades.
Subaru Rear Fender Flare Considerations
Fender flares serve both protective and aesthetic functions, shielding body panels from road debris while accommodating wider wheels and tires. For resale scenarios, they add rugged appeal and practical protection.
- Size requirements: Must cover existing fender damage while allowing clearance for oversized tires if applicable.
- Style alignment: Choose between OEM-like contours for stock appearances or aggressive flared designs for lifted or off-road vehicles.
- Material properties:
- ABS plastic: Affordable and paintable but less flexible
- Polyurethane: Flexible and highly impact-resistant—ideal for off-road use
- Metal: Durable but requires rust protection and adds significant weight
- Functional advantages: Wider flares accommodate larger tires, protect against rock chips, and hide panel rust/damage effectively.
- Environmental factors: UV-stabilized materials prevent fading in sunny regions; textured finishes mask wear and tear better.
Off-road tip: Polyurethane flares combine flexibility and durability for demanding terrain conditions.
Safety, Compliance & Customization
All exterior modifications must balance performance enhancement with safety and legal compliance. This becomes particularly important when preparing vehicles for resale markets where buyers expect both style and adherence to regulations.
- Safety features: Rounded edges reduce injury risk during maintenance; crash-tested components ensure structural integrity.
- Legal standards: Check local regulations regarding protrusion limits, visibility obstruction, and lighting requirements.
- Customization potential: Adjustable wings, modular diffusers, and configurable flare widths let owners personalize their vehicle's appearance and function over time.
- Aesthetic harmony: Coordinate spoiler colors with roof accents or contrast elements for cohesive styling.
- Installation ease: Bolt-on solutions minimize labor costs versus custom-fit or welded installations requiring professional work.
Resale advantage: Universal fitment accessories with multiple adjustment options tend to appeal to broader buyer demographics.
Selection Strategy: When sourcing parts for resale, prioritize versatile designs that satisfy both street and light-performance use. Offering tiered options—from budget ABS plastic to premium carbon fiber—caters to different buyer segments. Always verify product certifications and check forums for real-world feedback before stocking inventory.
| Component Type | Best Use Case | Material Options | Estimated Cost Range |
|---|---|---|---|
| Lip Spoiler | Stock appearance + minimal aerodynamic gain | ABS Plastic, Fiberglass | $80 - $250 |
| High-Rise Wing | Track/Performance Focus | Carbon Fiber, Fiberglass | $200 - $800+ |
| Full Diffuser | Aerodynamic Optimization | Carbon Fiber, Metal | $300 - $1,200 |
| Polyurethane Flares | Off-road Protection | Polyurethane, Steel Reinforced | $150 - $500 |
DIY Guide to Replacing a Subaru Rear Spoiler
Replacing your Subaru's rear spoiler is a rewarding project that enhances the vehicle's appearance and aerodynamics when done correctly. This comprehensive guide walks you through the process, from gathering tools to final installation, ensuring a smooth and professional result.
Safety Reminder: Always wear safety glasses and gloves during this process. Working around your vehicle’s exterior involves sharp edges and potential for minor injuries if precautions aren’t taken.
Essential Tools and Materials
Before starting, ensure you have all necessary tools and materials ready. Proper preparation streamlines the process and avoids unnecessary interruptions.
- New Rear Spoiler: Confirm compatibility with your Subaru model and year. Some spoilers come with brackets or specific mounting hardware.
- Clean Cloth: For wiping down surfaces and removing dust before installation.
- Alcohol Wipe: To thoroughly clean adhesive surfaces and remove any oils or residues.
- Torque Wrench: Ensures bolts are tightened to manufacturer specifications, preventing over-tightening or damage.
- Drill with Appropriate Drill Bits: Required for models where drilling is necessary during installation.
- Masking Tape: Helps temporarily secure the spoiler in place while checking alignment.
- Pencil or Marker: Useful for marking drill points or alignment references on the trunk lid.
- Safety Glasses: Protects your eyes from debris when drilling or prying off the old spoiler.
- Gloves: Prevents hand injuries and keeps your hands clean during installation.
Pro Tip: Double-check the fitment of your new spoiler by comparing it with the original one before beginning the removal process. Also, review the manufacturer's instructions for any model-specific requirements or recommendations.
Step-by-Step Replacement Instructions
Follow these detailed steps to replace your Subaru rear spoiler efficiently and effectively:
- Prepare the Vehicle
Clean the area around the rear spoiler thoroughly using a clean cloth and mild soap if needed. Removing dirt and grime ensures no contaminants interfere with adhesion or scratch the paint surface during installation.
- Remove the Old Spoiler
Depending on your Subaru model, the spoiler may be attached with bolts or adhesive. Use a trim removal tool to gently pry off the old spoiler if it's glued on. If bolted, locate and unscrew all fasteners using the appropriate socket or wrench. Keep screws organized in case they're reusable.
- Clean the Mounting Area
After removing the old spoiler, use an alcohol wipe to clean the surface completely. This step is crucial for adhesive-backed spoilers, as even small amounts of grease or dirt can compromise bonding strength.
- Prepare the New Spoiler
Refer to the manufacturer’s instructions for any pre-installation steps such as attaching brackets or applying adhesive. If using double-sided tape or adhesive, ensure it is evenly applied and not expired for optimal performance.
- Position the New Spoiler
Use masking tape to temporarily hold the new spoiler in place. Carefully align it with the trunk lid, ensuring symmetry and proper positioning. Take time here to avoid misalignment issues later on.
- Install the New Spoiler
If bolting the spoiler, insert each screw carefully and use a torque wrench to tighten according to the manufacturer’s specifications. If using adhesive, press firmly along the entire surface to ensure full contact and secure bonding.
- Secure All Fasteners
Double-check every bolt, screw, or clip to make sure they are properly tightened. Loose connections can cause vibration, noise, or even detachment during driving.
- Allow Time for Adhesive Cure (If Applicable)
If your spoiler uses adhesive, allow at least 24 hours before washing your car or exposing it to heavy rain. This curing period ensures maximum bond strength between the spoiler and the trunk lid.
| Installation Phase | Key Actions | Common Pitfalls | Recommended Tools |
|---|---|---|---|
| Preparation | Verify spoiler fit, gather tools, clean vehicle surface | Mismatched spoiler size, missing required tools | Soft cloth, bucket, mild detergent |
| Removal | Unbolt or gently pry off old spoiler without damaging paint | Paint scratches, lost screws | Trim removal tool, screwdriver set |
| Surface Prep | Thoroughly clean with alcohol wipes for adhesive application | Incomplete cleaning leads to poor adhesion | Alcohol wipes, lint-free towels |
| Mounting | Use masking tape to align, apply pressure evenly | Improper alignment, uneven pressure | Masking tape, level tool |
| Securing | Use torque wrench for bolts or firm pressure for adhesive | Over-torquing, insufficient bonding time | Torque wrench, rubber mallet |
Final Recommendation: After installation, inspect the spoiler after a short drive to confirm it remains securely in place. Listen for any wind noise or vibrations that might indicate a problem with the fit or installation.
Frequently Asked Questions About Subaru Rear Spoilers
A1: Whether or not a Subaru rear spoiler comes with a warranty largely depends on where you purchase it from and the type of part you choose. If purchased directly from an authorized Subaru dealership, the rear spoiler is typically covered under a limited factory warranty that may last for a set period (e.g., 1 to 3 years) depending on the model and region.
For aftermarket spoilers, warranties can vary significantly by brand and retailer. Certified aftermarket dealers often offer their own warranty programs, which might include coverage for defects in materials or workmanship. Always ask for warranty documentation and terms before making a purchase to ensure long-term protection and support.
A2: Choosing the correct Subaru rear spoiler involves several important considerations to ensure compatibility, aesthetics, and performance:
- Vehicle Model and Year: Confirm the make, model, and year of your Subaru to ensure the spoiler fits properly. Models like the WRX STI, Legacy, Outback, or BRZ may each require specific designs.
- OEM vs. Aftermarket: Decide whether you want an Original Equipment Manufacturer (OEM) part — which guarantees perfect fit and finish — or an aftermarket alternative, which may offer more styling options or cost savings.
- Mounting Style: Some spoilers attach using clips or adhesive, while others may require drilling or hardware. Choose based on how permanent you want the installation to be.
- Material: Common materials include ABS plastic, fiberglass, carbon fiber, and polyurethane. Each offers different benefits in terms of durability, weight, and appearance.
- Style and Aerodynamics: Consider whether you're aiming for visual enhancement, improved downforce, or both. Performance-oriented spoilers are designed with aerodynamics in mind.
Taking these factors into account will help you select a spoiler that complements your vehicle’s design and meets your functional needs.
A3: Yes, painting a Subaru rear spoiler is entirely possible and often recommended if you want it to match your vehicle's body color perfectly. However, proper preparation and the correct type of paint are essential to achieve a durable, professional-looking finish.
If the spoiler is made of plastic (such as ABS), it requires special preparation including sanding, priming with a plastic-adhesion primer, and then applying automotive-grade paint compatible with plastics. For fiberglass or carbon fiber spoilers, standard automotive paints can usually be used after appropriate surface preparation.
It’s also important to apply a clear coat after painting to protect against UV damage and weathering. While DIY painting kits are available, professional auto body shops can provide a high-quality, long-lasting result that blends seamlessly with your car’s existing paint.