When choosing body kit parts — a spoiler, a diffuser, side skirt extensions — the question of material almost always comes up. The two most common options are ABS plastic and carbon fiber. Each has its own strengths, and there is no single "better" answer — it depends on what matters most to you: budget, weight, looks, or ease of repair. Let's go through the main differences one by one.
Weight and aerodynamics
Carbon fiber is noticeably lighter than ABS plastic at a comparable part thickness. For track-focused cars, where every kilogram counts, that is a real advantage. On a regular daily car the weight difference of a single body kit part is barely noticeable, but for anyone fitting a full aerodynamic kit made of several pieces, the combined weight saving can add up.
Strength and impact behavior
ABS plastic is flexible: on impact it tends to bend or crack along the edge, but it often keeps its shape and can be repaired. Carbon fiber is stiffer and more resistant to flexing, but a hard direct hit can crack it outright, and that kind of damage is harder to fix without replacing the part. For city driving with curbs, speed bumps, and tight parking, plastic is often the more practical choice.
Cost
ABS plastic is the more affordable option, letting you put together a full body kit without excessive spending. Carbon fiber parts are more complex to manufacture and cost more, due to production technology and lower output volumes.
Look and texture
Carbon fiber is valued for its distinctive weave, which emphasizes a car's sporty character and looks good even unpainted — a protective clear coat is enough. ABS plastic is usually painted to match the body color or finished in gloss black, giving parts a more understated, factory-like look.
Painting and body color match
- ABS plastic takes primer and paint very well and adapts easily to any body color.
- Carbon fiber is usually left unpainted to keep the weave visible, or combined into hybrid parts with painted plastic sections.
Repairability
Small chips and cracks on ABS plastic can be filled and repainted. Repairing carbon fiber is trickier: the damaged layer of weave usually has to be cut out and rebuilt with resin, which takes experience and precision.
Who each material suits
- ABS plastic — for anyone who wants an affordable, practical body kit for daily driving.
- Carbon fiber — for anyone building a track or show-focused project and willing to treat parts with care.
Both materials are proven, reliable choices. The final decision should come down to how and where you drive, and the budget you set aside for tuning.