4-Inch Lift Kit with M1 Shocks for 2003–2006 Jeep Wrangler 4WD
- Fits 2003–2006 Jeep Wrangler 4WD, including Rubicon, Sahara, Sport, X, SE, and Unlimited trims
- In the box: coil box, two M1 Monotube shock pairs, and the 4-inch kit box hardware
- Bolt-on installation — no cutting or welding called for; downloadable installation guide available
- Automatic transmission models may need an SYE and CV driveshaft, with adjustable lower control arms (SKU 1190) alongside them
- Solid tubular transfer case drop maintains driveshaft angles; control arms use OEM-style rubber bushings
The Trail Fortress check
Will it fit your truck?
✓ Fits
Automatic transmission models may require a SYE and CV Drive Shaft to fix driveline vibrations adjustable lower control arms SKU: 1190 may also be required in conjunction with the SYE and CV Drive Shaft. Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Lift Kit with M1 Shocks, fitment-checked
Rough Country 90740 is a 4-inch lift kit for 2003–2006 Jeep Wrangler 4WD, built around front and rear M1 Monotube shock pairs and a boxed coil package. It bolts on without cutting or welding. Automatic transmission builds may need an SYE and CV driveshaft, plus adjustable lower control arms (SKU 1190), to settle driveline vibration.
This 4-inch lift kit for the 2003–2006 Jeep Wrangler 4WD arrives as a bolt-on package covering SE, Sport, X, Sahara, Rubicon, Unlimited, Unlimited Rubicon, and 65th Anniversary Edition trims. Coil springs are wound to factory spring rates, a tubular transfer case drop keeps driveshaft angles in line, and the control arms use OEM-style rubber bushings. The two M1 Monotube shock pairs handle front and rear damping. Read the automatic transmission driveline note before ordering, then work from the downloadable Rough Country installation guide.
What’s in the box
Kit contents
- 1× Coil Box 1669CT
- 1× M1 MONOTUBE SHOCK PAIR 770743P
- 1× M1 MONOTUBE SHOCK PAIR 770746P
- 1× 4in Kit Box 90630BOX2
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 90740 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 90740 |
| UPC / GTIN | 00840269918780 |
| Lift height | 4 in |
| Shock package | M1 series |
| Shipping weight | 132 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here