6434-1 - 1963-1970 GM C10 Race Upper A-ArmsUMIs adjustable upper a arms feature race quality, adjustable rod ends. Camber and caster can be adjusted, often without the need for shims.

UMI 2020 measures 43" center to center

tall ball joints

supplied bare metal and install in approximately 1 - 2 hours

850lb Springs

The Roto-Joint is both adjustable and rebuildable

degree C neg 45

For compatibility with certain rear-end setups

Non Hybrid (XA10 LN

factory rubber bushing setup to improve responsiveness and reduce wheel hop upon launching

2 " Lowering Spring

sharp steering precision

and the bearings and hardware comes from various sources