AEV 4" DualSport RT Suspension System for JL Wrangler 4-Door
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Warranty Information
Vendor warranty summary
AEV (American Expedition Vehicles) Warranty
At a glance: Limited lifetime parts warranty for the original purchaser against material and manufacturing defects; finish defects get one year
This is AEV's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 27, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| AEV accessories: bumpers, tire carriers, DualSport suspension, wheels, skid plates, snorkels, flares, lighting mounts and recovery gear | Limited lifetime |
| Original AEV paint, powder coat or dip finishes | 1 year |
| Wear items: bushings, bump stops, heim joints, beadlock rings | Not covered |
What's covered
- Material and manufacturing defects in AEV accessories
- Original purchaser only, with proof of purchase
- AEV may repair the part, replace it, or reimburse the purchase price, at its discretion
What's not covered
- Second owners
- Labor to diagnose, remove or install parts
- Abuse, misuse, modification, improper installation or poor maintenance
- Vehicles used in racing, competition or commercial activity
- Trail and weather finish damage such as rock chips, scratches, sap, salt and sun
- Incidental costs, damage to non-AEV parts, counterfeit parts, and shipping back to AEV
How to make an AEV warranty claim
- Gather your proof of purchase and photos of the defect
- Contact AEV's warranty department to get a return merchandise authorization (RMA)
- AEV usually asks for the part back for inspection; if a replacement ships first, AEV may charge for it and refund once the defect is confirmed
AEV warranty contact: Email warranty@aev-conversions.com · Phone 248-926-0256
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to AEV, and help it along either way.
See all AEV products at NVMOS →
Disclaimer: The information on this page describes AEV's (American Expedition Vehicles) own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: AEV official parts warranty. Last updated on nvmos.com: October 27, 2026. See our return policy for NVMOS's own terms.
About the brand
AEV (American Expedition Vehicles)
AEV (American Expedition Vehicles) builds OE-quality bumpers, suspension, wheels and armor for Jeep Wrangler and Gladiator, Ram HD, Ford Super Duty, Chevy and GMC trucks. NVMOS carries AEV's EX and RX bumpers, DualSport RT, XP and SC suspension systems, Borah, Katmai and Crestone DualSport wheels, skid plates, snorkels, HighMark flares and the AEV recovery gear line.
Based in: Wixom, Michigan (founded in Missoula, Montana in 1997) · Made in: USA, most parts within 200 miles of Detroit · Lead time: Ships from AEV; bumpers and suspension systems ship freight or oversize
Shop all 270 AEV (American Expedition Vehicles)WarrantyAll brands
Warranty terms are set by AEV (American Expedition Vehicles), not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
AEV 4" DualSport RT Suspension System for JL Wrangler 4-Door
The AEV 4" DualSport RT Suspension System for the JL Wrangler Unlimited is engineered to deliver maximum off-road capability without compromising on-road stability, steering precision, or overall vehicle control. As a fully integrated system, it accommodates up to 39" tires when paired with AEV Heavy Duty Adjustable Lower Control Arms, while preserving proper geometry, balanced ride quality, and predictable handling characteristics.
Unlike conventional lift kits that prioritize height over performance, the DualSport RT system focuses on optimized wheel travel, corrected steering geometry, and system-wide integration—resulting in a suspension system that performs cohesively in all driving conditions.
As with all of AEV’s expedition-ready suspension systems, the 4" DualSport RT Suspension System for the Jeep Wrangler JL is FMVSS No. 126 Compliant. FMVSS No. 126 is a rigorous standard set by the National Highway Traffic Safety Administration (NHTSA) that tests new electronic stability control (ESC) systems by subjecting it to various maneuvers designed to evaluate its effectiveness in preventing loss of control and skidding, including evasive lane-changing maneuvers at highways speeds.
Key Benefits
Increased Wheel Travel & 39" Tire Capability
The DualSport RT system is engineered to provide the wheel travel and clearance necessary to properly run up to 39" tires with OEM fender flares when paired with AEV Heavy Duty Adjustable Lower Control Arms or equivalent aftermarket front lower control arms that provide comparable tire clearance. This delivers improved articulation and off-road traction without sacrificing stability or requiring excessive lift height.
Balanced On-Road and Off-Road Performance
AEV’s approach prioritizes real-world drivability. By combining frequency-tuned springs with matched damping, this system delivers composed highway manners alongside enhanced off-road capability—eliminating the common trade-offs found in traditional lift kits.
Corrected Steering Geometry & Improved Control
The included AEV High Steer System addresses the limitations of factory steering components when paired with larger tires and increased ride height
- Improved Steering Geometry: Raises steering linkages (tie rod by 2.75″, track bar/drag link by 2.5″) to correct geometry after lifting.
- Enhanced Handling & Stability: Flattens drag link/track bar angles, reduces bump steer and body roll, and moves front roll center closer to the center of gravity.
- Adjustable Steering Control: Features adjustable steering stops for fine-tuning lock-to-lock steering.
- Durable Construction: Includes cast iron high steer knuckles, forged steel drag link, tie rod ends, and a chromoly tie rod.
Additionally, the high steer design improves ground clearance of critical steering components, reducing vulnerability in off-road environments.
Core Components & Engineering
AEV High Steer System
- Cast iron steering knuckles
- Heavy-duty tie rod and drag link
- Machined steel steering damper mount
- Increased steering component ground clearance
Geometry Correction Systems (Front & Rear)
- Stamped steel front geometry correction brackets
- Front and rear track bar relocation brackets
- Rear control arm relocation brackets
- Optimized suspension and steering angles for stability and handling
Frequency Tuned Triple-Rate Coil Springs
- Progressive, triple-rate design for improved ride quality and load management
- Maintains comfort during daily driving while supporting increased articulation off-road
AEV-Tuned Bilstein® 5100 Shock Absorbers
- Specifically valved for the DualSport RT system
- Provides consistent damping across varying terrain
- Enhances control, stability, and ride refinement
AEV Steering Damper
- Improves both the steering and handling by dampening minute movements and vibrations that are amplified in vehicles with larger tires.
- Developed in partnership with Bilstein USA
- Direct fit to the JL 4” Suspension
Additional Components
-
Extended sway bar end links
-
Bump stop extensions
-
AEV JL Jack base
-
AEV ProCal Snap
Why an Integrated System Matters
Every component in the DualSport RT Suspension System has been engineered to function together as a unified system. This eliminates the inconsistencies commonly associated with pieced-together lift kits and ensures:
- Predictable handling characteristics
- Improved durability and long-term reliability
- Consistent performance across a wide range of driving conditions
The AEV 4" DualSport RT Suspension System sets a new standard for JL Wrangler suspension performance by combining increased wheel travel, corrected steering geometry, balanced ride quality, and up to 39" tire capability when paired with AEV Heavy Duty Adjustable Lower Control Arms. This fully integrated system is purpose-built for customers who want maximum off-road capability without sacrificing the refinement and control expected from an OEM-engineered system.
- 2018-2026 Jeep Wrangler JL
Fitment is per AEV. Confirm your model year, trim and options before ordering.
| Spec | Detail |
|---|---|
| Brand | AEV (American Expedition Vehicles) |
| Part numbers | N0741000AA, N0742000AA, N0743000AA, N0741500AA |
| Warranty | AEV limited lifetime parts warranty |
Not sure which version fits your build? Call or text us at (920) 249-7744.
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