UMI’s heavy duty boxed arm kit with adjustable rod ends provides a rock-solid foundation for your autocross, road race or corner carving 4th Gen. The lower a-arms fully gusseted box tubing construction, while appearing heavy-duty, affords a five pound weight savings per set over factory lower a-arms. These arms have double shear sway bar mount tabs with endlink set included as well as factory GM pedestal location. Lower arms are compatible with factory, Koni, and other t-bar, stock mount shocks. Upper arms feature caster and camber adjustment with premium rod ends. Laser cut ball joint pads feature improved ball joint angle and increased caster (up to additional 2 degrees - varies by chassis) for lowered cars and come assembled with premium ball joints. UMI’s newest design features the most travel and clearance of any a-arm on the market and is a must for lowered vehicles. This A-arm kit is designed to work with the factory K-member, UMI k-members, and virtually all stock mounting point aftermarket K-members. Crafted with pride in Philipsburg, PA- USA.

Genuine UMI Performance. Part number 230910-B.

Ships from US warehouse.

WARNING: California Proposition 65 — this product can expose you to chemicals known to the State of California to cause cancer or reproductive harm.