Find your vehicle's Make and Model, then pick the Spacer Thickness that suits you. Usually, a 20mm Spacer gives you about a 30 to 40mm Body Lift, while a 25mm Spacer offers around a 40 to 50mm Body Lift. Keep in mind the weight of any added accessories like Winches, Bull Bars, and Bumpers when deciding. Standard vehicles with a lower front stance usually get perfectly leveled with a 20mm Spacer, but if you've got extra gear on the front, a 25mm Spacer might be the better choice.