| 1990 - 1993 | Chevrolet | C1500 | 454 SS | RWD | 7.4L | | Standard Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | 88–91 must use Alignment Kit #4950. |
| 1994 - 1995 | Chevrolet | C2500 | Base | RWD | 4.3L | GAS | Extended Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1995 | Chevrolet | C2500 | Base | RWD | 4.3L | GAS | Standard Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1997 | Chevrolet | C2500 | Base | RWD | 5.0L | GAS | Extended Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1997 | Chevrolet | C2500 | Base | RWD | 5.0L | GAS | Standard Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1997 | Chevrolet | C2500 | Base | RWD | 5.7L | GAS | Extended Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1997 | Chevrolet | C2500 | Base | RWD | 5.7L | GAS | Standard Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1997 | Chevrolet | C2500 | Base | RWD | 7.4L | GAS | Extended Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1994 - 1997 | Chevrolet | C2500 | Base | RWD | 7.4L | GAS | Standard Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1988 - 1995 | Chevrolet | C2500 | Cheyenne | RWD | 4.3L | GAS | Extended Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
| 1988 - 1995 | Chevrolet | C2500 | Cheyenne | RWD | 4.3L | GAS | Standard Cab Pickup | Lowering Rate: F: 4-5" / R: 7" | All except 8‑lug | Not designed for diesel applications | 4" Ext Cab must use #4981; 6" Ext Cab must use #4985 driveline alignment kit | 88–91 must use Alignment Kit #4950. |
