Product Disclaimers: Note: Included in Flip kit 6926. About this product Fits: 1990Ð1999 GM Silverado/Sierra C2500/C3500 2WD (All cabs) OBS body style and increases overall approximate suspension travel by 2.5 inches Kit includes Frame C-sections Template Hardware Instructions Fitments Year Make Model Submodel Drive Type Engine Fuel Type Body Type Notes 1994 - 1995 Chevrolet C2500 Base RWD 4.3L GAS Extended Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1994 - 1995 Chevrolet C2500 Base RWD 4.3L GAS Standard Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1999 Chevrolet C2500 Base RWD 5.0L GAS Crew Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1994 - 1997, 1999 Chevrolet C2500 Base RWD 5.0L GAS Extended Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1994 - 1997, 1999 Chevrolet C2500 Base RWD 5.0L GAS Standard Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1999 - 2000 Chevrolet C2500 Base RWD 5.7L GAS Crew Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1994 - 1997, 1999 - 2000 Chevrolet C2500 Base RWD 5.7L GAS Extended Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1994 - 1997, 1999 - 2000 Chevrolet C2500 Base RWD 5.7L GAS Standard Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1999 - 2000 Chevrolet C2500 Base RWD 7.4L GAS Crew Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. 1994 - 1997, 1999 - 2000 Chevrolet C2500 Base RWD 7.4L GAS Extended Cab Pickup U: 4" Ext Cab must use #4981. 6" Ext Cab must use #4985 driveline alignment kit. Media Flip Kit: