Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Readylift Customers Have Asked For It And We Have Delivered. In Fall Of 2018 We Announced Our New Leveling And Sst Lift Kit Offerings For The All-New Gm 1500 Trucks. We Specifically Did Not Include The Factory Lift Kit-Equipped Gmc At4 And Chevy Silverado Trail Boss. The At4/Trail Boss Are Factory Equipped With A 2' Front Lift. This Front Lift Includes A Longer Front Shock/Strut Assembly. When Combining A Traditional Leveling Kit On These Factory Lifted Trucks, Several Issues Present Themselves Including Binding Problems With The Factory Control Arm Ball Joint And Contact Concerns With The Lower Strut/Cv Axle Assembly. The Readylift 66-3921 1. 75' Leveling Kit Is Similar To Our Popular 66-3086 Leveling Kit For Pre-2019 Trucks. The 66-3921 Leveling Kit Provides Required Amount Of Lift Without Causing Conflict With The Factory Strut Geometry And Clearances. In Light Of The Factory Upper Control Arm'S Lack Of Dynamic Range When The At4/Trail Boss Truck Is Further Lifted, This Leveling Kit Includes Our Popular Tubular Upper Control Arms With Corrected Ball Joint Cup Angles, Heavy-Duty Replaceable Ball Joints And Out New Terrain Control Technology (Tct) Maintenance-Free Pivot Bushings With Side-Biter Washers To Improve Alignment Retention. Note: At4 And Trail Boss Do Not Fit The Same Size Tire. This Is Due To The Difference In Front Fender Opening Design. 66-3921 Leveling Kit: At4 - Max Tire 275/60-20, 20X9 0 Offset Wheel Trail Boss - Max Tire 295/65-20, 20X9 0 Offset Wheel
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What materials is the ReadyLift 66-3921 Leveling Kit made from?A: The ReadyLift 66-3921 Leveling Kit is made from alloy steel. This material is known for its durability and strength, making it ideal for suspension components.
Q: What are the dimensions of the ReadyLift 66-3921 Leveling Kit?A: The dimensions are sixteen inches in length, twelve point zero one inches in width, and six inches in height. These dimensions ensure a proper fit for your vehicle.
Q: What is the model number of this leveling kit?A: The model number of this leveling kit is sixty-six dash three nine twenty-one. This identifier helps you find the specific product for your GM truck.
Q: How do I install the ReadyLift 66-3921 Leveling Kit?A: To install the kit, follow the provided instructions specific to your vehicle model. It’s recommended to have professional assistance or a good understanding of suspension systems.
Q: Is the ReadyLift 66-3921 suitable for GMC AT4 and Chevy Silverado Trail Boss?A: Yes, this leveling kit is designed for GMC trucks but not for those with factory lift kits like the AT4 and Trail Boss. Special considerations must be made for these models.
Q: What size tires can I use with the ReadyLift 66-3921 on an AT4?A: For the AT4, the maximum tire size is two hundred seventy-five by sixty-20. This ensures compatibility with the vehicle's body and suspension.
Q: How do I maintain the ReadyLift 66-3921 Leveling Kit?A: Maintenance involves checking the alignment and ensuring that the tubular upper control arms are in good condition. Regular inspections can help prolong the lifespan of the kit.
Q: Is the ReadyLift 66-3921 leveling kit safe for my vehicle?A: Yes, the kit is designed to improve suspension geometry and clearances safely. Proper installation is crucial for maintaining safety standards.
Q: What type of vehicles can use the ReadyLift 66-3921?A: This leveling kit is specifically designed for all-new GM one thousand five hundred trucks, excluding those with factory lift kits. Ensure compatibility with your specific model.
Q: How do I store the ReadyLift 66-3921 Leveling Kit?A: Store the kit in a dry, cool place away from direct sunlight. Ensure that all components are clean and free from moisture to prevent rust.
Q: What should I do if my ReadyLift 66-3921 arrives damaged?A: If the kit arrives damaged, contact customer support immediately for assistance. They can guide you through the return or exchange process.
Q: Can I use the ReadyLift 66-3921 with aftermarket wheels?A: Yes, aftermarket wheels are compatible as long as they meet the specified dimensions. A wheel size of twenty by nine inches with zero offset is recommended.
Q: What is the warranty on the ReadyLift 66-3921 Leveling Kit?A: The warranty details can vary by retailer, but typically, ReadyLift products come with a limited warranty against defects. Check with your retailer for specifics.
Q: How does the Terrain Control Technology work in this kit?A: The Terrain Control Technology features maintenance-free pivot bushings designed to improve alignment retention and reduce wear. This enhances the overall driving experience.
Q: Is professional installation recommended for the ReadyLift 66-3921?A: Yes, professional installation is highly recommended to ensure proper fitment and safety. A qualified technician can address any specific vehicle needs.