Mastodon Tubular Control Arm Kit GM 58-64 Full Size Cars

Upgrade tubular upper and lower control arms for 1958–1964 GM full-size cars (Impala, Bel Air, Biscayne). Transforms the wandering, vague road feel of the factory stamped front end into a tight, modern setup with predictable handling and the caster angle a 21st-century chassis actually wants.

Uppers are made from 1-1/4" x .120" wall DOM tubing, lowers from 1-1/2" x .120" wall DOM with thick 1-1/2" pivot barrels. Lower arms are engineered to accept stock coil springs, coilovers, or air-bag shocks for maximum build flexibility. Built-in +5° additional caster for high-speed stability and reduced tire wear.

Specifications:

• Fitment: 1958–1964 Chevrolet Impala / Bel Air / Biscayne (full-size)
• Caster: +5° built in
• Spring options: Stock coils, coilovers, or air-bag shocks
• Includes: Upper and lower arms (set of 4), Deltalum bushings, billet cross-shafts, ball joints, urethane bump stops