How to Choose the Best Material For a Car Body Kit

The LARTE Design team of professionals has extensively researched the best materials for auto body kits. We tested fiberglass, polyurethane, ABS plastic, carbon fiber, and composite materials to help you choose the best option for your needs.

A body kit does more than just make your vehicle look cool; it serves various purposes, from enhancing aerodynamics to personalizing your ride appearance. Whether you are a professional car enthusiast or a daily driver looking to upgrade your vehicle, choosing the right body kit materials is crucial. In this article, we will dive into the different types of body kits and why material choice is the core factor in getting the best results.

WHAT IS A CAR BODY KIT?

A car body kit is a collection of exterior modifications designed to improve both the appearance and performance of a vehicle. These kits typically include such components as front and rear bumpers, side skirts, and spoilers. By altering the car’s aerodynamic profile, a body kit can also enhance handling and fuel efficiency. However, the most significant impact is on the vehicle’s aesthetics, giving it a more aggressive or unique look. If you're curious about what a body kit is and want to learn more, check out our in-depth blog article to discover how it can transform your car.

Understanding the materials available is essential when selecting a car body kit. Each material has its properties that influence the overall performance, durability, and aesthetics of your vehicle. Below, we will explore the most popular body kit materials along with the advantages and disadvantages of each.

CARBON FIBER

Carbon fiber is a high-strength material made from carbon atoms bonded together in a crystalline structure, known for its superior strength-to-weight ratio.

Pros:

• Ultra-Lightweight: Carbon fiber is significantly lighter than both fiberglass and ABS plastic, which can greatly enhance a car’s speed and fuel efficiency.
• High Strength: It offers exceptional tensile strength, making it incredibly durable and resistant to impacts.
• Premium Appearance: The distinctive weave pattern of carbon fiber is often left exposed, giving vehicles a high-end, performance-oriented look.

Cons:

• High Cost: Carbon fiber is one of the most expensive materials for auto body kits due to its complex manufacturing process.
• Vulnerability To Damage: While strong, carbon fiber can be susceptible to cracking under certain impacts, and repairs can be costly.

FIBERGLASS

Fiberglass is a composite material made from fine fibers of glass woven together and reinforced with resin. It is widely used in auto body kits due to its moldability and affordability.

Pros:

• Lightweight: Fiberglass is lighter than many other materials, which can improve your car’s performance by reducing overall weight.
• Cost-Effective: Generally, fiberglass is less expensive than other materials like carbon fiber, making it a popular choice for those on a budget.
• Customizable: Its moldability allows for intricate designs and custom shapes, providing more creative freedom for car modifications.

Cons:

• Brittleness: Fiberglass can be more prone to cracking and breaking upon impact, which can be a concern for daily drivers.
• Surface Finish: Fiberglass parts often require additional finishing work, such as sanding and painting, to achieve a smooth, high-quality appearance.

ABS PLASTIC

Acrylonitrile Butadiene Styrene (ABS) plastic is a common thermoplastic polymer used in various automotive applications, including car body kits.

Pros:

• Durability: ABS plastic is more impact-resistant than fiberglass, making it a better option for everyday use.
• Flexibility: It offers fine flexibility, reducing the risk of cracking under stress or minor impacts.
• Easy to Manufacture: ABS plastic can be mass-produced with consistent quality, leading to lower production costs.

Cons:

• Weight: ABS plastic is heavier than fiberglass, which might slightly affect the vehicle's performance.
• UV Sensitivity: Prolonged exposure to sunlight can cause ABS to degrade over time, potentially leading to discoloration or warping.

COMPOSITE MATERIALS

Composite materials are produced by combining two or more materials to create a product that leverages the strengths of each component. In auto body kits, composites often include materials like basalt fiber, fiberglass, or Kevlar.

Pros:

• Balanced Properties: Composites offer a good balance of strength, weight, and cost, making them a versatile option.
• Improved Durability: The combination of materials can result in a more durable product that resists cracking and damage better than fiberglass alone.
• Cost-Effective: Composites can be less expensive than pure carbon fiber while still offering many of its benefits.

Cons:

• Complex Manufacturing: The production process can be more complex, leading to variability in quality.
• Weight Variation: Depending on the blend, composites can vary in weight, potentially affecting the vehicle’s performance.

POLYURETHANE (A.K.A. 'URETHANE')

Polyurethane, commonly referred to as urethane, is a flexible and durable material used in various automotive parts, including auto body kits.

Pros:

• Flexibility: Polyurethane is highly flexible, allowing it to absorb impacts without cracking, making it ideal for daily drivers.
• Durability: It is resistant to wear and tear, including impacts, scratches, and weather conditions.
• Easy To Paint: Urethane can be painted to match your vehicle’s color, ensuring a seamless appearance.

Cons:

• Heavier Weight: Polyurethane is generally heavier than fiberglass and carbon fiber, which could slightly impact performance.
• Higher Cost: While not as expensive as carbon fiber, urethane auto body kits are typically pricier than fiberglass.

MATERIAL COMPARISON TABLE

When selecting the best material for your car body kit, several factors should influence your decision. Each material has its strengths and weaknesses, and the right choice will depend on your specific needs, from durability and weight to cost and aesthetics.

DURABILITY AND STRENGTH

Durability is a critical factor in choosing a body kit material, especially if your vehicle will be driven frequently or on rough terrain. Carbon fiber offers superior strength, making it less prone to damage, but it comes at a higher cost. Fiberglass provides a lightweight and cost-effective option, though it may require more frequent repairs. Polyurethane offers a good balance of strength and flexibility, making it ideal for daily drivers.

WEIGHT AND PERFORMANCE

The weight of the material can significantly impact your vehicle’s performance. Carbon fiber is the lightest option, providing the best performance gains but at a premium price. Fiberglass offers a good compromise between weight and cost, while polyurethane is heavier but more durable. The material you choose should align with your performance goals and budget.

COST AND VALUE

Your budget will play a significant role in the material you choose for your auto body kit. Fiberglass is the most cost-effective option, while carbon fiber is the most expensive due to its high-performance benefits. Polyurethane offers a balance between affordability and durability, making it a popular choice for many car enthusiasts. Consider the long-term value of the material you choose, as a more durable material may save you money on repairs and replacements in the long run.

INSTALLATION AND MAINTENANCE

Finally, consider the ease of installation and maintenance when choosing a body kit material. Fiberglass is relatively easy to work with, making it a popular choice for custom installations. However, its brittleness means that it may require more frequent maintenance. ABS plastic and polyurethane offer easier installation and lower maintenance requirements, making them ideal for daily drivers.

AESTHETICS AND FINISH

The visual appeal of your auto body kit is another important consideration. Carbon fiber is renowned for its premium look, with its distinctive weave pattern often left exposed for added flair. Polyurethane and composites offer flexibility in painting and customization, allowing for a seamless match with your vehicle’s color. Fiberglass may require more finishing work, but it can also be customized to suit your style.

Choosing the right material for your car body kit often comes down to weighing the pros and cons of each option. In this section, we will compare some of the most popular materials – fiberglass, ABS plastic, carbon fiber, composite materials, and polyurethane – highlighting their differences to help you make an informed decision.

FIBERGLASS VS. ABS PLASTIC

Durability:

• Fiberglass: While lightweight and moldable, fiberglass is more prone to cracking under impact. It's durable enough for most applications but may not hold up well in harsher driving conditions or with frequent use.
• ABS Plastic: ABS plastic offers better impact resistance and flexibility, making it a more durable option for daily rides under various road conditions.

Weight:

• Fiberglass: Fiberglass is lighter than ABS plastic, which can be beneficial for performance-oriented modifications, contributing to a slight improvement in speed and fuel efficiency.
• ABS Plastic: Although slightly heavier, the added weight of ABS plastic is often negligible in most driving scenarios but might be a consideration for high-performance builds.

Cost:

• Fiberglass: Generally more affordable, fiberglass is a popular choice for those on a budget who still want a custom look for their vehicle.
• ABS Plastic: ABS plastic can be slightly more expensive due to its enhanced durability and impact resistance, but it’s still a cost-effective option.

Ease Of Installation:

• Fiberglass: Being easier to mold and install, fiberglass is more forgiving during the installation process but may require more post-installation work, like sanding and painting.
• ABS Plastic: ABS plastic offers a more straightforward installation process with fewer finishing tasks, but its rigidity can make fitting more challenging in complex designs.

CARBON FIBER VS. COMPOSITE MATERIALS

Durability:

• Carbon Fiber: Known for its incredible strength, carbon fiber is highly resistant to impact and environmental factors, making it a top choice for high-end applications.
• Composite Materials: While durable, composite materials vary in strength depending on their specific blend. They generally offer good durability, balancing the properties of the materials used in the composite.

Weight:

• Carbon Fiber: Extremely lightweight, carbon fiber reduces the overall weight of the vehicle significantly, enhancing performance, especially in speed and handling.
• Composite Materials: Composite materials are generally heavier than pure carbon fiber but lighter than other materials like fiberglass or ABS plastic, offering a good compromise between weight and cost.

Cost:

• Carbon Fiber: As one of the most expensive materials, carbon fiber is often reserved for those who prioritize performance and aesthetics, with a willingness to invest in top-tier components.
• Composite Materials: More affordable than carbon fiber, composites offer many of the same benefits at a lower cost, making them accessible to a broader range of car enthusiasts.

Ease of Installation:

• Carbon Fiber: Requires precision during installation to avoid damage, as carbon fiber can be brittle and challenging to work with, especially for those without experience.
• Composite Materials: Generally easier to install than carbon fiber, composites offer more flexibility and less risk of damage during installation.

FIBERGLASS VS. POLYURETHANE

Durability:

• Fiberglass: While reasonably durable, fiberglass is more prone to cracking and may not withstand impacts as well as polyurethane.
• Polyurethane: Highly durable and impact-resistant, polyurethane is ideal for daily drivers who need a robust material that can handle bumps and scrapes without significant damage.

Weight:

• Fiberglass: Lighter than polyurethane, fiberglass can improve vehicle performance slightly, particularly in terms of speed and agility.
• Polyurethane: Heavier than fiberglass, polyurethane adds some weight to the vehicle, which might affect performance slightly but provides better durability.

Cost:

• Fiberglass: More budget-friendly, making it a popular choice for those who want to customize their vehicle without breaking the bank.
• Polyurethane: More expensive than fiberglass, but the added cost is justified by its superior durability and impact resistance.

Ease of Installation:

• Fiberglass: Easier to cut and shape, fiberglass allows for more customization during installation but may require more finishing work afterward.
• Polyurethane: More challenging to install due to its flexibility and weight, but it offers a superior fit and finish once installed correctly.

CARBON FIBER VS. POLYURETHANE

Durability:

• Carbon Fiber: Offers unmatched strength and resistance to wear and tear, but can be brittle under certain impacts, making it vulnerable to cracking.
• Polyurethane: Extremely durable and flexible, polyurethane is better suited to absorbing impacts without damage, making it more practical for everyday use.

Weight:

• Carbon Fiber: The lightest material among all options, carbon fiber significantly reduces vehicle weight, enhancing performance in terms of speed and fuel efficiency.
• Polyurethane: Heavier than carbon fiber, which can slightly affect performance, but its durability often makes this trade-off worthwhile for many drivers.

Cost:

• Carbon Fiber: The most expensive option, carbon fiber is typically used in high-end builds where performance and aesthetics are top priorities.
• Polyurethane: Less expensive than carbon fiber but still more costly than fiberglass, polyurethane offers a good balance between price and durability.

Ease of Installation:

• Carbon Fiber: Requires careful handling during installation due to its brittleness, making it more challenging for those without experience.
• Polyurethane: While heavier and more flexible, polyurethane can be more forgiving during installation, offering a snug fit and long-lasting finish.

Want to learn exactly how carbon fiber compares to ABS plastic? Read our article on the key differences between carbon fiber vs ABS plastic.

To keep your car body kit looking and performing its best, regular maintenance is essential. Different materials require different care techniques, so understanding how to properly maintain each type is key to longevity and appearance. Below, we'll cover maintenance tips for each material and discuss their repair considerations.

When it comes to repairing damage to car body kits, the material's properties play a crucial role in determining the ease and cost of repairs.

Choosing the best material for your car body kit is a crucial step in customizing your vehicle. The right choice depends on various factors, including your driving habits, aesthetic preferences, and budget. Below, we will guide you through the final steps of making an informed decision that aligns with your specific needs.

ASSESSING YOUR NEEDS AND BUDGET

Before selecting a material for your body kit, it's essential to assess your needs and budget. Here are some key questions to consider:

• What Is Your Primary Goal? Are you looking to enhance the car’s appearance, improve performance, or strike a balance between both? For example, if weight reduction and performance are top priorities, carbon fiber might be your best bet. However, if you’re focused on achieving a certain look on a budget, ABS plastic or fiberglass could be more suitable.
• How Much Are You Willing to Spend? Your budget will heavily influence your material choice. Carbon fiber is premium but comes with a higher price tag, while fiberglass and ABS plastic offer more budget-friendly options without sacrificing too much on aesthetics.
• How Often Do You Drive the Car? If your car is a daily driver, durability and ease of maintenance should be top considerations. Polyurethane, with its flexibility and impact resistance, might be ideal for daily use. On the other hand, if the car is mostly for show, you might prioritize materials that offer the most visual appeal, like carbon fiber.
• What Is the Climate Like in Your Area? Different materials respond differently to environmental conditions. For instance, fiberglass might be prone to cracking in extreme cold, while carbon fiber holds up well in various weather conditions but can be sensitive to UV rays without proper care.
• Are You Planning to Install the Kit Yourself? Some materials are easier to work with than others. If you’re planning a DIY installation, ABS plastic or fiberglass might be more manageable, whereas carbon fiber and composite materials might require professional installation due to their complexity. Read about the nuances of self-installation in our article Body kit installation: DIY or hire a professional. What will you choose?

By answering these questions, you’ll have a clearer understanding of what you need from your body kit material, helping you make a choice that balances performance, aesthetics, and budget.

CONSULTING WITH EXPERTS

When making a significant investment in a car body kit, it’s always a good idea to consult with professionals who have extensive experience in the field. Experts can provide valuable insights based on your specific vehicle model, usage patterns, and desired outcomes.

At LARTE Design, we have been working in the car body kits market for over 10 years, specializing in premium customizations. Our team understands the nuances of different materials and can offer tailored advice to ensure you make the best decision for your car.

Whether you're uncertain about the best material for your body kit or need guidance on the installation process, we are here to help. Get a professional consultation from our experts to explore the options that suit your needs, ensuring that your investment enhances both the look and performance of your vehicle.

By assessing your needs and budget, and consulting with industry professionals, you can confidently select the ideal material for your car body kit, achieving the perfect blend of style, durability, and performance.

CAN I MIX DIFFERENT MATERIALS IN MY BODY KIT?

Yes, it is possible to mix different materials in a body kit. Some car owners choose to use different materials for various parts of the kit to balance cost, weight, and durability. For instance, you might select a carbon fiber hood for its lightweight properties while using polyurethane for the bumpers due to its flexibility and impact resistance. However, keep in mind that different materials may have slightly different finishes, which could affect the overall look of your car. It’s important to ensure that the materials are compatible in terms of installation and appearance.

HOW LONG DOES A TYPICAL BODY KIT LAST?

The lifespan of a body kit largely depends on the material used, the quality of installation, and how well it’s maintained. For example, carbon fiber and composite materials can last many years if properly cared for, whereas fiberglass might require repairs over time due to its susceptibility to cracking. On average, with regular maintenance and careful use, a well-made body kit can last anywhere from 5 to 10 years or more.

WILL INSTALLING A BODY KIT VOID MY CAR'S WARRANTY?

Installing a body kit might affect your car's warranty, particularly if the installation involves modifying or replacing factory components. It’s important to check with your car manufacturer or dealer before proceeding with the installation. Some warranties may be voided if non-factory parts are installed, especially if they affect the vehicle's performance or safety. To minimize risks, consider working with a certified installer who can ensure that the body kit is installed in compliance with manufacturer guidelines. At LARTE Design, we ensure the seamless fit of the kit without any compromise on your car systems performance and warranty.

ARE THERE ANY LEGAL CONSIDERATIONS WHEN INSTALLING A BODY KIT?

There can be legal considerations depending on your location and the extent of the modifications. In some areas, body kits must comply with specific regulations regarding vehicle dimensions, ground clearance, and lighting. For example, excessively low body kits or those that alter the original design of the vehicle might be subject to inspection and approval by local authorities. It’s advisable to check local laws and regulations before installing a body kit to avoid fines or complications.

WHAT IS THE MOST DURABLE MATERIAL FOR A CAR BODY KIT?

Carbon fiber is often considered the most durable material for a car body kit due to its high strength-to-weight ratio and resistance to environmental factors. However, it is also the most expensive. Polyurethane is another durable option, known for its flexibility and impact resistance, making it a good choice for daily drivers who want both durability and affordability. Composite materials can also offer a balance between durability and cost, combining the strengths of different materials.

HOW DOES WEATHER AFFECT DIFFERENT BODY KIT MATERIALS?

Weather can have varying effects on different body kit materials. For instance:

• Fiberglass may crack in extremely cold conditions or degrade over time with constant exposure to moisture and UV rays.
• Polyurethane handles temperature changes well and is less likely to crack in cold weather, but prolonged exposure to sunlight can cause fading or warping if not properly protected.
• ABS Plastic can become brittle in very cold weather, potentially leading to cracking upon impact.
• Carbon Fiber is highly resistant to weather effects, though its resin coating can be damaged by UV rays if not properly protected with a UV-resistant coating. Regular maintenance and protective treatments can help mitigate weather-related wear and tear on any material.

IS CARBON FIBER WORTH THE COST?

Carbon fiber is worth the cost if you prioritize performance, weight reduction, and a premium appearance. It offers unmatched strength and lightweight properties, which can enhance your car's handling and acceleration. Additionally, the distinctive carbon fiber weave adds a unique, high-end look that many car enthusiasts find appealing. However, it is one of the most expensive options, so it may not be the best choice if you’re working within a tight budget.

CAN I PAINT ANY MATERIAL FOR MY BODY KIT?

Most body kit materials can be painted, but the process and results may vary depending on the material.

• Fiberglass, ABS Plastic, and Polyurethane are all paintable and typically hold paint well with proper preparation.
• Carbon Fiber can also be painted, but many owners choose to leave it unpainted to showcase its unique texture. If you do decide to paint carbon fiber, it’s crucial to work with a professional who understands how to prepare and paint the material without damaging it. Always ensure the surface is properly primed and prepared to achieve the best results.

WHICH MATERIAL IS THE EASIEST TO INSTALL?

ABS plastic and polyurethane are generally considered the easiest materials to install for body kits. They are more forgiving during installation, can be molded to fit most vehicle shapes, and do not require specialized tools or techniques. Fiberglass can be more challenging to install due to its rigidity and the need for precise alignment and finishing. Carbon fiber and composite materials often require professional installation due to their higher cost, the need for precision, and the risk of damage during the process. If you’re new to car modifications, starting with ABS plastic or polyurethane might be the best choice.

Theory is one thing. Real-world use is another. Larte Design applies carbon fiber in complete body kits, where weight, strength, and fitment actually matter — not just on paper.

You can see how carbon compares in practice across different models.

Below you’ll find some of the most popular body kits:

• BMW body kits

• BMW X6M body kits

• 2022-2026 BMW X7 G07 body kit

• 2022-2026 BMW XM G09 body kit

• Mercedes-Benz body kits

• Cadillac Escalade body kits

• Porsche Cayenne S Coupe body kit

• Porsche 911 Carrera body kit

• GLE Coupe body kits

• AMG GLE Coupe body kits

• Lamborghini Urus body kits

• Lamborghini Urus SE body kit

• Lamborghini Urus Performante body kit