UMI Performance 1" Solid Rear Sway Bar - Black (1965-1970 GM B-Body) (3665-B)
Dramatically reduce chassis body roll, minimize understeer, and improve high-speed cornering stability with the UMI Performance 1" Solid Rear Sway Bar (3665-B). Specifically designed for 1965-1970 GM B-Body full-size Chevrolet platforms—including the Impala, Caprice, Bel Air, and Biscayne—this heavy-duty rear anti-roll bar provides the torsional stiffness needed for a balanced suspension during aggressive street driving, cornering, and track outings.
Precision-manufactured as a single, solid piece from 1" high-carbon steel and heat-treated for maximum structural strength, this sway bar delivers consistent handling performance without flexing under load. It bolts directly to factory lower control arms equipped with sway bar mounting provisions, as well as UMI Performance boxed lower control arms (P/N 3655). Comes complete with heavy-duty Grade 8 mounting hardware for a quick, hassle-free bolt-on installation, and is finished in a durable gloss black powder coat for superior protection against rust and corrosion.
Features
- Reduces chassis body roll and understeer for a flatter, more balanced cornering response
- Precision-formed from 1" solid high-carbon steel for maximum torsional strength
- Heat-treated one-piece construction prevents bar deformation under aggressive cornering loads
- Direct bolt-on design mounts directly to lower control arms with factory sway bar holes
- Seamlessly pairs with UMI Performance boxed lower control arms (P/N 3655)
- Includes high-strength Grade 8 installation hardware
- Durable gloss black powder coat finish protects against rust, corrosion, and road grime
- 100% designed, tested, and manufactured in the USA
Specifications
- SKU: 3665-B
- Manufacturer: UMI Performance
- Country of Origin: USA
- Material: 1" Solid High-Carbon Heat-Treated Steel
- Position: Rear
- Finish: Gloss Black Powder Coat
- Hardware: Grade 8 Installation Hardware Included
- Weight: N/A
- Dimensions: N/A
- Unit of Measure: Kit / Set
- Installation Time: 1 Hour
Fitment Notes
- Position: Rear Sway Bar.
- Fits 1965-1970 GM B-Body full-size Chevrolet models (Impala, Caprice, Bel Air, Biscayne).
- Control Arm Compatibility: Mounts to stock lower control arms with factory sway bar holes or UMI Performance boxed lower control arms (P/N 3655).
- Axle Housing Compatibility: Designed ONLY for stock GM rear axle housings. NOT compatible with Ford 9" aftermarket rear axle housings.
- Direct bolt-in replacement; includes all necessary mounting hardware.
Fitment
1965 Chevrolet Bel Air
1966 Chevrolet Bel Air
1967 Chevrolet Bel Air
1968 Chevrolet Bel Air
1969 Chevrolet Bel Air
1970 Chevrolet Bel Air
1965 Chevrolet Biscayne
1966 Chevrolet Biscayne
1967 Chevrolet Biscayne
1968 Chevrolet Biscayne
1969 Chevrolet Biscayne
1970 Chevrolet Biscayne
1965 Chevrolet Caprice
1966 Chevrolet Caprice
1967 Chevrolet Caprice
1968 Chevrolet Caprice
1969 Chevrolet Caprice
1970 Chevrolet Caprice
1965 Chevrolet Impala
1966 Chevrolet Impala
1967 Chevrolet Impala
1968 Chevrolet Impala
1969 Chevrolet Impala
1970 Chevrolet Impala
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
