Function - To protect the frame, engine bay, and lower body from trail debris coming up through the wheel wells. Design - These are meant to reseal your engine compartment when using aftermarket or stock fenders, clean up the look of your inner fender, and provide better airflow where it counts. Please Note: Wrangler JL & Gladiator JT models equipped with front crash bar: a modification will have to be made to either the inner fender or crash bar for proper fitment. Simple installation - Our inner fenders also allow easy access to the shocks and do not require for the fender and inner fender to be removed like our competitors! Compatibility - Compatible with 2018-2023 Jeep Wrangler JL and 2020-2023 Jeep Gladiator JT.