
Body kits, also known as ground effects kits, are used to customise cars and can be made from a variety of materials including fibreglass, polyurethane, carbon fibre, and plastic. While some body kits are designed primarily for aesthetic purposes, others are designed to improve a car's performance by reducing drag and increasing downforce, keeping the car stable at high speeds. Plastic stock body kits can help with downforce depending on their shape and design, as well as the company that produced them.
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What You'll Learn
- Plastic body kits are cheaper and more lightweight than other materials
- Plastic body kits are less brittle and more flexible than urethane
- Plastic body kits can be stuck on with 3M double-sided tape
- Plastic body kits can be painted or vinyl-wrapped
- Plastic body kits are more susceptible to damage from impact

Plastic body kits are cheaper and more lightweight than other materials
Body kits, also referred to as "ground effects kits", are used to improve aerodynamics and even fuel efficiency. They can also make a car look more visually aggressive.
Plastic body kits are a popular choice for car owners as they are cheaper and more lightweight than other materials. For example, ABS plastic is a common thermoplastic polymer used in car body kits. It is a combination of three compounds: acrylonitrile, styrene, and polybutadiene. ABS plastic is heavier than fiberglass but is easy to paint and has a superior finish. It is also more resilient and less prone to cracking or breaking on impact.
Fiberglass is another lightweight and affordable option for body kits. It is also highly customizable, allowing for intricate designs and custom shapes. However, it is more prone to cracking and breaking upon impact, which can be a concern for daily drivers. It also requires additional finishing work to achieve a smooth, high-quality appearance.
Carbon fiber is a more expensive option, known for its superior strength-to-weight ratio. It is significantly lighter than both fiberglass and ABS plastic, which can enhance a car's speed and fuel efficiency. It is also strong and safe, making it a common choice for race cars.
While plastic body kits offer cost and weight advantages, it is important to consider the specific needs and constraints of your vehicle when choosing a body kit material. Other factors to consider include aesthetics, durability, and performance.
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Plastic body kits are less brittle and more flexible than urethane
Body kits are used to improve a car's aerodynamics and even its fuel efficiency. They can also make a car look more aggressive and stylish. Body kits can be made from a variety of materials, including carbon fiber, fiberglass, and polyurethane, or urethane.
Polyurethane, or urethane, is a popular material for car body kits. It is more flexible than fiberglass, making it easier to install and more durable. Polyurethane can be coaxed into position without the fear of it cracking or breaking. It is also very resistant to breaking. However, it is heavier than fiberglass, and susceptible to warping under extreme heat, so it may not be the best choice for racing.
Plastic body kits, on the other hand, are less brittle and more flexible than urethane. They are also impact, chemical, and heat resistant. One type of plastic used in body kits is ABS plastic, which is a thermoplastic blend that combines the strength and rigidity of acrylonitrile and styrene polymers with the ruggedness of polybutadiene rubber. ABS plastic is widely used by automobile manufacturers for trim and bumpers as it offers good protection against dents.
Another type of plastic used in body kits is Duraflex, which is a combination of fiberglass, plastic, and resins. Duraflex is more flexible and durable than ordinary fiberglass while remaining lightweight.
While the choice of material for a body kit may depend on the intended use of the car, it is important to note that some companies do research body kit downforce and airflow. Wind tunnel testing and engineering can be quite expensive, which is reflected in the price of the body kit.
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Plastic body kits can be stuck on with 3M double-sided tape
Body kits, also known as "ground effects kits", are used to improve aerodynamics and fuel efficiency. They can also be used to customise the look of your car. Depending on its shape and design, a body kit can reduce drag and increase traction, with spoilers adding downforce at higher speeds to keep the car stable.
There are several varieties of 3M tape available for this purpose, including heavy-duty foam tape and weather and car wash-resistant tape. It is important to ensure that the surfaces are clean and dry before applying the tape.
However, some sources suggest that tape is not a suitable method for attaching body kits, and that an adhesive such as Sikaflex is preferable. Tape may not be strong enough to cope with door mouldings, and may leave an unremovable mess on the paintwork if the kit ever needs to be removed.
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Plastic body kits can be painted or vinyl-wrapped
Body kits are a great way to make your car stand out and give it a sportier look. They can be made from various materials, including plastic, and can be painted or vinyl-wrapped to match your desired aesthetic.
Plastic body kits are a popular choice due to their low cost and ease of modification. FRP (fibre-reinforced plastic) is a commonly used plastic for body kits as it is lightweight and easy to work with. However, it requires a lot of preparation before painting and is susceptible to damage. Polyurethane body kits are another option; they are more flexible and resistant to cracking but are heavier and more expensive.
If you're looking to change up the colour of your plastic body kit, painting it is an option. It is recommended to paint the kit after fitting it to your car but before installing it. This allows you to access all the nooks and crannies for a more uniform paint job. Keep in mind that painting can be tricky, and hiring a professional might be best for perfect results.
Another option to change the appearance of your plastic body kit is vinyl wrapping. Vinyl wrapping is a popular choice for those who want to transform their car's exterior without making a permanent change. It can be applied to individual pieces of the body kit, such as skirts, which can be challenging due to their curved shape. Practising on plain material before attempting to wrap your car's body kit is advised.
Whether you choose to paint or vinyl-wrap your plastic body kit, it's essential to consider the weight and aerodynamic impact of the modifications. While body kits can make your car visually more aggressive, they might not always improve performance.
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Plastic body kits are more susceptible to damage from impact
The use of body kits on cars is a popular way to customise vehicles, adding a sense of flare and improving aesthetics. Body kits, also known as "ground effects kits", are often used by race cars to improve aerodynamics and increase downforce, traction, and stability at higher speeds.
While body kits can be made from a variety of materials, including steel and carbon-fibre reinforced plastic, a common material used in their production is FRP (Fiberglass Reinforced Plastic). This material is predominantly composed of fibreglass, with the addition of a polyester-based resin. FRP is a popular choice due to its low manufacturing cost and ease of modification. However, one of the drawbacks of using plastic for body kits is that it is more susceptible to damage from impact.
Plastic body kits are more prone to damage from impact due to the physical changes the material undergoes when exposed to temperature fluctuations. At extreme temperatures, plastic can become more brittle or more pliable, affecting its strength and durability. This means that plastic body kits may not provide the same level of impact protection as kits made from other materials, such as steel.
Additionally, plastic body kits may also be more susceptible to damage from UV rays, which can cause discolouration, cloudiness, or cracking over time. This can impact the overall appearance and integrity of the body kit, requiring more frequent replacements or repairs.
It is worth noting that while plastic body kits may be more vulnerable to damage from impact, they are often chosen for their affordability and ease of installation. For those who are not racing their cars or using them on closed-circuit tracks, the choice of material may be less critical, and the visual impact of the body kit may take precedence over performance enhancements.
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Frequently asked questions
Plastic stock body kits can help with downforce, but only if they are designed with that purpose in mind. Many kits are designed for show, focusing on looks rather than aerodynamic improvements. However, some companies do research body kit downforce and airflow, and these kits can be effective at increasing downforce and improving performance.
Body kits, also known as "ground effects kits", are used to improve aerodynamics and fuel efficiency. They can also be used to customise and personalise a vehicle, making it stand out.
Body kits increase downforce by controlling the airstream underneath the vehicle, creating a low-pressure area that pulls the body closer to the road. This increases traction and stability, allowing the car to handle turns at higher speeds without losing grip.
Body kits can be made from a variety of materials, including fiberglass, polyurethane, ABS plastic, carbon fiber, composite, and Duraflex, a combination of fiberglass, plastic, and resins. The choice of material depends on factors such as cost, ease of installation, and appearance.
The installation process for a body kit will vary depending on the type and manufacturer. In general, the first step is to dry fit the kit to check the alignment, followed by marking and drilling mounting holes. It is important to consult with a specialist shop that has experience installing body kits to ensure a proper fit and finish.











































