Fabtech K1122DL 4″ Performance System With Front Dirt Logic 2.25 Resi Shocks & Rear Dirt Logic 2.25 Shocks

Fabtech’s 4″ Performance System for the 2011–19 Chevrolet Silverado 2500HD and GMC Sierra 2500HD 2WD/4WD is engineered as a robust suspension upgrade, utilizing heavy duty components for superior durability and performance. The system features high-arched lower control arm crossmembers constructed from 1/4″ thick steel to deliver exceptional strength. Fabtech’s ductile iron steering knuckles maintain near-stock track width, keeping the tires positioned properly under the fenders for a clean, factory-like appearance. Rear lift is achieved through a block and u-bolt configuration for reliable and consistent height.

This system is designed for improved off-road performance while maintaining excellent on-road handling characteristics. With added clearance for larger tires, the 4″ Performance System offers an ideal balance of strength, stability, and upgraded vehicle stance.

Fabtechs new 4 crossmember systems utilize their proven heavy duty construction and design features for a robust suspension upgrade. The 4 system features high arched lower control arm crossmembers constructed of 1/4 th

Crossmember Lift System; 4 in. Lift; w/Dirt Logic 2.25 Resi Shocks;;