Undercover Elite LX 14-15 Sierra 5'9" - 66 UC1138L-66 s4 Replaces weak factory cold side

Replaces weak factory cold side connection components

5-inch tire on a 9-inch wide wheel with 5-Inch backspace

If you’re upgrading your charge pipes

The Dyno tells all: real-world gains of +13 hp and +12 lb-ft of torque

Undercover Elite LX 14-15 Sierra 5'9" - 66 UC1138L-66 s4 Replaces weak factory cold sideUnderCover Elite LX 2014 2015 GMC Sierra 5' 9" Bed Crew Cab 66(WA412P) Sonoma Jewel Red Lightweight; ABS; Composite Construction Custom Engineered For A Precise Fit Premium Carpet Lined Underside Full Perimeter Seal Removable LED Light Removes Easily Using Quick Release Hardware The Elite LX is the newest cover from UnderCover. It comes standard with all the features from the UnderCover Elite. Weve added a premium carpet lined underside, topped with