Clayton source wording says: System Highlights: Covers the Entire Underbelly – Engine, transfer case, and gas tank OEM Replacement Design – Eliminates unnecessary bolt-on weight Completely Flat from Crossmember Back – No hang-up points Boat-Side Frame Rail Coverage – Prevents direct frame impacts Countersunk Hardware Throughout – Smooth skid surface No Overlapping Panels – Skids key together into a single, integrated system All Items Ship Bare Metal - Painting or Powder Coating will be necessary Construction & Weight: Engine & Transfer Case Skids: ¼” thick steel Gas Tank Skid: 3/16” thick steel Total system weight ~200 lbs Net vehicle gain ~140 lbs after OEM skid removal Modular & Upgrade-Friendly: Skids can be purchased individually or as a complete system Fully compatible with short arm and COR long arm suspensions Gas tank skid supports future rear long arm conversion without cutting NOTE: For non-lifted applications - motor mount bracket may make slight contact with the front driveshaft NOTE : Please note this item(s) ships out of a box!. Treat this as a suspension-system install. Verify lift height, shock choice, control-arm/track-bar contents, bump stops, driveshaft/exhaust/brake-line needs, alignment/caster, wheel and tire plan, and whether the Jeep is JL, JT, JK, TJ, LJ, XJ, or ZJ before checkout.