

4 Inch Lift Kit from Rough Country, part 66370, for 1997-2006 Jeep Wrangler. This is the V2 Monotube configuration. Estimated install time is 8-9 hours.
Rough Country's 4-inch Long-Arm Lift Kit is designed for Jeep TJ owners and off-road enthusiasts who want superior performance. This all-inclusive suspension system features adjustable lower control arms, X-Flex Joints, and high-clearance arms for longer travel and a smooth ride, while eliminating binding and rear steer. Built with heavy-duty components like OEM-style bushings and Sway Bar Disconnects, this kit is customizable with a range of shock options, including N3 and M1 Monotube shocks. Upgraded forged adjustable track bars offer exceptional durability and stability, ensuring precision on tough trails.
Features
- Enhanced ground clearance: ensures superior off-road capability by raising your ride height for better obstacle clearance.
- Front and Rear adjustable track bars: crafted from forged solid steel for unrivaled strength and durability, ensuring optimal alignment and handling.
- High-clearance design on lower control arms: engineered for maximum ground clearance, helping you tackle rugged terrains with ease.
- Extreme travel long arms: designed for perfect alignment and superior articulation, giving you smooth, controlled rides on the roughest trails.
- Upper Arm Features: Durable OEM-style rubber bushings and heavy-duty flex joints with a 2.5" diameter body and 1.25" thread, pivoting up to 20 degrees for enhanced articulation and smoother suspension performance.
- Lower Arm Features: Durable OEM-style rubber bushings and heavy-duty flex joints with a 2.5" diameter body and 1.25" thread, pivoting up to 35 degrees for maximum off-road flexibility and optimal articulation.
What's in the box
- Front: Lifted High Flex Coil Springs
- Front: Upper Adjustable Control Arms
- Front: Lower Adjustable Control Arms
- Front: Control Arm Mounting Brackets
- Front: Bumpstop Extensions
- Front: Sway-Bar Quick Disconnects
- Front: Forged Adjustable Track Bar
- Front: Track Bar Drop Bracket
- Front: Pitman Arm
- Front: Stainless Steel Braided Brake Lines
- Front: Hardware
- Rear: Lifted High Flex Coil Springs
- Rear: Upper Adjustable Control Arms
- Rear: Lower Adjustable Control Arms
- Rear: Extended Sway-Bar Links
- Rear: Forged Adjustable Track Bar
- Rear: Stainless Steel Braided Brake Line
- Rear: Bumpstop Extensions
- Rear: Hardware
Notes
- Does NOT fit Unlimited models.
- A Slip Yoke Eliminator with CV Driveshaft is recommended to avoid driveline vibration.
- Rubicon models do not need a SYE kit or transfer case drop but a CV driveshaft is still recommended.
- Exhaust will have to be cut and rerouted to make sure it is away from the moving components.
Specifications
| Part number | 66370 |
|---|---|
| Brand | Rough Country |
| Type | Suspension Lift Kits |
| Lift height | 4" |
| Configuration | V2 Monotube |
| Drive | 4WD |
| Estimated install time | 8-9 hours |
| Tire and wheel fitment | 275/65R18 on 18x9 (+1 offset); 265/60R20 on 20x10 (-18 offset); 265/60R20 on 20x9 (-12 offset); 275/70R17 on 17x8.5 (+1 offset); 275/70R17 on 17x9 (+0 offset); 285/45R22 on 22x10 (-18 offset); more |
| Shipping weight | 278.5 lb |
| Instruction sheet | perf1663 |
| Fits | 1997-2006 Jeep Wrangler |
| Manufacturer applications | 2003-2006 Jeep Wrangler Rubicon (4WD); 1997-2006 Jeep Wrangler (4WD) |