2013-2024 Cummins Backcountry Shock Set w/ 2.5" Lift (AS-DLVLSPKG-CS20RR-B)

made from high-silicon ductile iron

OEM Part Number: F5AZ12A648AB | 3F1Z12A648A | DY961 | DY1144

and lack of fuel economy

Silver vein powder coated for corrosion resistance

faster-spooling turbo and cooler EGTs from the increased airflow

All Melling high volume oil pumps use the latest in gear and gerotor technology to provide the highest level of quality and performance

Easy to Install

Custom tuners are required to follow the guidelines of the Clean Air Act as they develop their own tunes for our devices

Utilizing a B8 5100 (Ride Height Adjustable) shock absorber is the easiest way to level out your vehicle

are assembled using OE procedures and fully calibrated and tested to ensure perfect performance

stamped steel factory pan

LED indicator light that shows when BD 6R140 Transmission Pressure Controller has line pressure boosting is active