UMI Performance · New
UMI Performance 78-88 G-Body S10 Tubular Front Upper & Lower A-Arms Poly
MPN 303133-1-R · Store SKU umi303133-1-R
Supplier stock checked 11/7/2026, 9:32:22 PM UTC. Adding a part does not reserve it.
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Product details
UMI lower A-Arms are fabricated from USA DOM tubing with CNC notched tube ends for a precision fit. They are jig built to maintain accuracy and bolt on correctly every time. All critical areas are TIG welded for superior strength and a clean look. UMI’s lower A-Arms also feature improved ball joint angle for lowered vehicles and the design provides additional tire clearance. UMI P/N 3031 lower a-arms include greaseable fluted polyurethane bushings for a smooth quiet ride. They come preloaded with polyurethane bump stops, steering stops and premium ball joints. UMI’s extensive testing on the street, drag strip and skid pad ensures a quality product able to with stand all types of abuse. UMI lower A-Arms are designed to work with factory springs, lowering springs and most coil over kits without changing the a-arms. For exceptional handling and performance we recommend combining with UMI upper a-arms, part # 3033-2. UMI’s lower a-arms are shipped fully assembled and ready for installation. Designed and manufactured with pride in Philipsburg, PA - USA. Hardware kit, Part # 3011- Lower a-arm hardware kit includes 12mm Grade 10.9 bolts, washers and nylock nuts. Kit includes all hardware needed to mount the new UMI a-arms to the vehicle. Simply bolt-on and go. Fits factory spindle and works with factory springs, lowering springs and coil over kits such as Viking and QA1. Tubing is precision bent on a programmable tube bender and CNC machined for accuracy. 5 lbs lighter than the factory a-arm set while increasing durability. 303133-1 - 1978-1988 G-Body, S10 Tubular Front Upper & Lower A-Arms, Poly Jig built and TIG welded for superior strength and a clean look. Designed and manufactured with pride in Philipsburg, PA – USA Premium ball joints installed and polyurethane bump stops Greaseable and fluted polyurethane bushings. Durable red or black powder coat finish Features:
Manufacturer fitment & guides
Check 303133-1-R against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
