KSP fits for ram 1500 Wheel Spacers give your truck a more aggressive appearance. When you install KSP Performance1.50 inch Pro Billet Wheel Spacers, you can increase tire clearance to keep tires from crashing into frame rails and suspension links at full turn if your vehicle lifted or larger tires changed. Fitment: Years Make Model Includes Tradesman, Express, SLT, Big Horn, Lone Star, Sport, R/T, Laramie, Rebel and Laramie Longhorn Installation If the bolt length of your vehicle exceeds 38mm, you need to cut it off. Specification: Bolt Pattern: 5x5.5/ 5x139.7mm Hub/Center Bore: 77.8mm Thickness: 1.5(38mm) Thread pitch: M14x1.5/14mmx1.5 Quantity: set of 4 pcs with all hardware Features: Give your vehicle a more aggressive appearance Improve the handling, stability and performance Increase tire clearance to keep tires from crashing into frame rails and suspension links at full turn when vehicle lifted or larger tires changed. 6061 T6 Aircraft Aluminum forged Spacers are more heavy duty and durable than casting CNC precision machining and professional dimensions to ensure the best fitting The anodized surface provides additional resistance to corrosion. Perfectly Hubcentric Design is easy to install and eliminates chance of vibration. ISO/DIN 10.9-12.9 grade bolts/Studs ,SCM435 steel material heat treated to avoid breaking Including4 pcs Forged Wheel spacers with 20 pcs open ended nuts and hardware Notes: Don't use impact wrench Highly recommend Thread-Locking Professional installation is highly recommended Do the wheel balance before install the wheels Clean rust or dirt before installation Re-torque all lug nuts after 50-100 miles of driving ,then again after 2000-3000 miles