CPP Rear Axle Conversion/ Flip Kit 4" Drop Weld-On Chevy/ GMC 1/2-Ton Truck 55-59
Highlights
- 4" Rear Suspension Drop
- Modern Rear Axle Conversion
- Fits 3" Axle Tubes
- Rear Axle Centering Design
CPP Rear Axle Conversion and Flip Kit with a 4" drop for 1955-1959 Chevy and GMC 1/2-ton trucks.
Upgrade your 1955-1959 Chevy or GMC 1/2-ton truck with this CPP Rear Axle Conversion and Flip Kit. Designed to simplify the installation of a modern rear axle, this kit addresses a common fitment issue encountered when converting early trucks from an enclosed driveshaft to an open driveshaft configuration. Its specially designed axle seats feature indexing holes that correct the original spring center bolt's 1.5" forward offset, helping center the rear wheels within the wheel openings.
Features and Benefits:
- Allows installation of compatible modern rear axles with 3" axle tubes
- Supports conversion from enclosed to open driveshaft configurations
- Indexed axle seats correct the original 1.5" spring center bolt offset
- Helps center the rear axle within the wheel openings
- Doubles as an axle flip kit for a 4" rear suspension drop
- Includes U-bolts and spring tie plates for axle mounting
- Upper shock mounts support rear suspension installation
- Upper spring towers and boxing plates provide additional mounting components
- Weld-on installation for compatible rear axle conversions
- Ideal for classic truck lowering and drivetrain modernization projects
In addition to accommodating rear axles with 3" axle tubes, this conversion kit doubles as an axle flip kit that provides a 4" rear suspension drop. The package includes U-bolts, spring tie plates, axle seats, upper shock mounts, upper spring towers, and boxing plates for a comprehensive installation. Ideal for classic truck restorations and custom lowering projects, this weld-on kit provides a practical foundation for modern rear axle conversions and improved rear suspension stance.
Kit Includes:
- Rear Axle Seats with Indexing Holes
- Rear Axle U-Bolts
- Spring Tie Plates
- Upper Shock Mounts
- Upper Spring Towers
- Boxing Plates
Vehicle Fitment:
- 1955-1959 Chevy 3100/3200 (Task-Force)
- 1955-1959 GMC 100 (Blue-Chip)
Please Note: Welding is required for installation.
California Residents: Proposition 65 Warning
Related Categories: 1947-1959 GMC Truck Parts, 1947-1959 Chevrolet Truck Parts
Vehicle Fitment
This product will fit the following 47-59 Chevy Truck years:
- 1955,
- 1956,
- 1957,
- 1958,
- 1959,
This product will fit the following 47-59 GMC Truck years:
- 1955,
- 1956,
- 1957,
- 1958,
- 1959,









