Body Kits / aero/ exterior

Exterior parts should do two jobs: fit correctly and work at speed. Underground Dynamics carries exterior components for builders who care about aero, clearance, and chassis-specific fitment—not universal “close enough.”

Shop exterior parts by category below.

Body Kits

Full kit coverage for a matched look and a cleaner aero package.

• Platform-specific fitment (chassis/year dependent)
• Designed to manage airflow, not just add bulk
• Best for: complete exterior refresh; track-inspired builds; consistent panel lines

Fenders (Including Widebody)

More tire. More clearance. Less rubbing.

• Added width for aggressive wheel/tire setups
• Helps manage clearance at lock and under compression
• Best for: wide wheels; lowered cars; track setups that need real clearance



Front Bumpers

Front-end airflow and cooling start here.

• Options that improve ducting and front aero balance
• Fitment matters: mounting points, grille/duct compatibility, and ride height
• Best for: street performance; track days; front-end refresh after damage



Rear Bumpers

Rear bumpers finish the aero profile and clean up the back end.

• Designed for clean fitment and consistent lines
• Works best when matched with side skirts and front aero
• Best for: full exterior builds; diffuser-compatible setups (where applicable)



Side Skirts

Side skirts help control airflow along the rocker and visually tie the kit together.

• Helps reduce turbulence along the side of the car
• Can improve aero consistency when paired with a front splitter
• Best for: balanced aero packages; lowered cars; complete kit builds



Mud Flaps

Practical protection for daily driving, track debris, and wide tire setups.
• Helps reduce rock chips and road spray
• Useful on lowered cars and wider-than-stock tires
• Best for: daily drivers; rally-inspired builds; track cars that see debris

How to Choose the Right Exterior Setup

Start with your goal Track function, street fitment, or full kit aesthetics.

Confirm fitment Chassis and model year matter. So do trim differences.

Plan for clearance Lowered ride height, wheel specs, and tire size can change everything.

Build as a system Front + sides + rear works better than random parts.

Why Buy Exterior Parts from Underground Dynamics

Platform-focused selection: parts chosen for popular chassis and real builds

Functional-first options: aero and clearance that make sense

No guesswork: we prioritize fitment details over vague claims

Common Searches Body kits by chassis Widebody fenders for wheel clearance Front and rear bumper upgrades Side skirts for aero balance Mud flaps for lowered cars