For sale: Differential lowering kit or 4x4 lowering kit. Fits all GM vehicles: Sierra, Yukon, Tahoe, Silverado. I think it even fits HD models. Like new, used for two months, clean, guaranteed. Easy to install and essential for those who want to lift from 2 inches to 4 inches without damaging the axles. Location: Sakaka, Al Jawf. Selling to the highest bidder.