UMI Performance's CornerMax front lowering kit provides an adjustable 0 to 2 inch front drop for 1963 through 1970 GM C10 and C15 fullsize trucks and Suburbans. The kit combines tubular upper and lower control arms, mounting brackets, and the required hardware to lower the front while improving handling with CornerMax geometry. A black powder coat finish protects the steel components. UMI Performance manufactures these control arms in the USA.
Specifications:
- Part type: Front lowering kit
- Design: CornerMax
- Front drop: 0 to 2 inches (adjustable)
- Includes: Upper and lower control arms, brackets, hardware
- Material: Steel
- Finish: Black powder coat
- Made in the USA
- Part number: 643546-1-B
Vehicle Applications:
- 1963 Chevrolet C10 Pickup
- 1964 Chevrolet C10 Pickup
- 1965 Chevrolet C10 Pickup
- 1966 Chevrolet C10 Pickup
- 1967 Chevrolet C10 Pickup
- 1968 Chevrolet C10 Pickup
- 1969 Chevrolet C10 Pickup
- 1970 Chevrolet C10 Pickup
- 1967 Chevrolet C10 Suburban
- 1968 Chevrolet C10 Suburban
- 1969 Chevrolet C10 Suburban
- 1970 Chevrolet C10 Suburban
- 1970 GMC C15/C1500 Pickup
FAQ
What is included in the UMI Performance 643546-1-B CornerMax lowering kit?
The kit includes tubular upper and lower control arms, mounting brackets, and the required hardware for the front suspension.
How much does the 643546-1-B kit lower the front?
It provides an adjustable front drop of 0 to 2 inches.
What vehicles does the 643546-1-B kit fit?
It fits 1963 through 1970 Chevrolet and GMC C10 and C15 fullsize trucks and Suburbans. See the Vehicle Applications list for exact years.
Where is the 643546-1-B lowering kit made?
UMI Performance manufactures these control arms in the USA.

