BDS2123FS | BDS Suspension 4 Inch Lift Kit For Ram 1500 With Air Ride 4WD | Large Bore OE Knuckle Type | Fox 2.0 Performance Series Shocks

• 35 x 12.5 with 18 x 9 and 4.5 in. Backspace
• 35 x 12.5 with 20 x 9 and 5 in. Backspace

OE Knuckle Type

RAMs with factory 22" wheels require the larger bore knuckles due to larger wheel bearing assembly. Reference build code WPM or WPZ.

Rear Shock Option

NX2 Nitro Series

• Nitrogen-charged
• Twin-tube design
• 10-stage velocity-sensitive valving
• Dual-welded ends for increased strength
• 1-3/8-inch high-flow piston
• Self-lubricating seals
• Silver powder coat finish

FOX 2.0 Performance Series

• 2-inch Impact extruded aluminum body
• Internal floating piston (IFP) monotube design
• CNC machined 6061-T6 aluminum mounting ends
• Massive 5/8-inch hard chrome plated heat-treated alloy steel shaft
• Race-developed high-flow piston design
• Application-specific valving to maximize performance
• Long-lasting clear anodized finish

Important Notes

1. Fits models with 3.0L Hurricane I6, 3.6L V6, and 5.7L V8 engines.
2. Extreme care/caution must be taken to follow the steps of these instructions to prevent any air leaks or damage to the bags during installation.
3. The factory air ride is a closed-loop system. Opening the system more times than recommended in the lift instructions will require the system to be recharged (this can be done at any RAM dealer service department). A scan tool is needed to access the air control module to perform the service.
4. Frame bracket modification is required.
5. Fits 4WD models equipped with factory air ride only.
6. Stock 18" wheels cannot be reinstalled due to steering interference. Stock 20"+ wheels can be reinstalled with factory-size tires.
7. Trucks equipped with factory 22" wheels must use the large bore steering knuckles.
8. Does NOT fit Diesel Models.
9. Will NOT fit models equipped with the Thermal Axle option. Reference build code DSK-P or check the diff cover for cooling lines mounted.
10. IF USING 18IN WHEELS WITH MAXIMUM RECOMMENDED BACKSPACING, TEST FIT WHEELS ON VEHICLE BEFORE MOUNTING TIRES TO ENSURE CLEARANCE
11. Included Replacement front brake lines (22545) do not work on 2025 model year trucks, relocation bracket is used instead. See instructions for bracket details

Installation

Specification