BDS Suspension 2013-18 Ram 3500 4WD Diesel - 8" 4-Link Suspension System. BDS Suspension adds to its industry leading lineup for the late model RAM 3500 4WD trucks with 8" 4-link systems. This new 8" 4-link system offers premium on-road comfort and superior offroad capability for the best all around performance out of your new 3/4-ton RAM trucks. The system converts the factory radius arm suspension to BDS's tried and true 4-link design for improved stability, wheel travel, and handling across all terrains. The 4-link design limits caster change to less than 1-degree of change throughout wheel travel for better handling, steering control, and overall driveability.

The additional height comes from a pair of specially designed dual rate ProRide coil springs. These 8" coils have been engineered and tested to improve the ride quality and performance across all terrains while holding up to the rigors that 3/4-ton truck owners demand without bowing or sagging over time. At 8" of lift, transmission/transfer case relocation is required to allow front driveshaft functionality. BDS includes a new laser cut transmission crossmember and adjustable transmission mounting plate to increase clearance front driveline clearance. At the rear, there is a new leaf spring/block combo that is design to optimize ride quality and maximize wheel travel. This is accomplished with an exclusive triple-stage leaf spring design. While most leaf springs will have a main leaf pack and an overload leaf, we have developed the new leaf for the Ram so that the main leaf pack is broken into 2 stages. The primary 3 leafs are functional with no additional load in the vehicle. As medium sized loads are applied (trailer, dirt bikes, etc) the secondary 2 leafs are engaged. Lastly, if the truck is loaded heavy, the bottom overload is engaged for maximum hauling capacity.

• 8" Lift Dual Rate Coil Springs
• Optional Fox Shock Upgrade
• Massive Tubular 4-Link Conversion Arms
• Reduced Caster Change through Wheel Travel
• 5-year, 60,000 mile drivetrain warranty
• BDSs exclusive No Fine Print Warranty

 Important Kit Notes

1. Not for use with factory rear airbag suspensions
2. Diesel Only
3. Kits come standard with 6-Bolt indexing ring kit. If equipped with heavy-duty 6 Speed Aisin Transmission order 8 Bolt Index Ring
4. Carrier bearing drop kit will be required for 2-piece rear drive shaft #122405
5. Some vehicles may require rear driveshaft spacer kit 122007 to maintain adequate rear driveshaft engagement
6. Will not fit Cab and Chassis models

Recommended Wheel & Tire:

40" x 13.50" w/ 17" x 9" Wide and 4-1/2 to 5-1/2" Backspacing
40" x 13.50" w/ 18" x 9" Wide and 4-1/2 to 5-1/2" Backspacing
40" x 13.50" w/ 20" x 9" Wide and 4-1/2 to 5-1/2" Backspacing