Designed specifically for the 1973-1980 GM C10 trucks, these spindles fit perfectly with 1-1/4 in. brake rotors. If you own a 1981-1987 model, you might find that it comes with 1 in. brake rotors. In such cases, you'll need to upgrade to the 1-1/4 in. rotors used on the earlier models to ensure compatibility and optimal performance. Upgrade your squarebody with UMI's 6400-1 lowering kit, giving your vehicle a jaw-dropping 4.5'/6' drop while improving handling.

UMI Performance 236-6400-1 Lowering Kit Features:

• Fits: 1973-1987 GM C10 Lowering Kit (4.5″/6″), Bilstein shocks
• Material: Steel
• Finish: Red Powdercoated
• Color: Black
• Adjustable: Yes
• Attachment Type: Bolt On
• Bushing Material: Polyurethane
• Bushing Color: Red
• Bushings Included: Yes
• Hardware Included: Yes
• Grade: Performance
• Sway Bar Color: Red Powdercoated