Description
UMI’s 3057-1 lower a-arms feature a relocated ball joint cup which offers 10 degrees caster when used with our P/N 3056 upper arm while keeping the spindle pin centered. The 3/4” taller Howe ball joint works to optimize the roll center, lower the center of gravity and lowers the ride height ½”. The double shear shock mount is removable which permits spring and shock changes at the track in minutes without disconnecting the ball joints. An aluminum steering stop is adjustable and limits steering lock to prevent tire and wheel damage. UMI designed Delrin bushings help the 3057-1 travel smoothly for bind-free operation whether running street, strip, road race or auto-x. Also included is a double shear sway bar mounting system which accepts UMI sway bars and many other manufacturers stock location aftermarket units. Available in UMI red or black powder coat. 100% designed, manufactured and raced with pride in the USA. Battle tested on the iconic UMI Green Machine Performance note: UMI recommends adding the P/N 3060 bump steer kit for optimal performance. Lower a-arms work best when used in conjunction with caster corrected upper a-arms. Installation Notes: The 3057-1 is a versatile competition a-arm that can be used with various springs and shocks configurations.
PRODUCT FEATURES
- 1-¼” and 1-½” USA DOM tubing construction
- CNC laser cut components throughout
- 10 degrees caster potential when combined with UMI 3056 upper a-arm
- Removable double shear mount to allow spring/shock replacement without removing spindle
- Mount spacing suitable for aftermarket manufacturers shock/spring combos
- Adjustable steering stop
- Double shear swivel sway bar mounts and hardware work with UMI P/N 3035 and most other factory eyelet style sway bars
- Smooth travel Delrin bushings, UMI designed and machined
- Saves 3.2lbs per set as compared to stock stamped a-arms
- Suitable for competition use. Road race, auto-x, drag race, street corner carving
- Designed, tested, manufactured and raced in Philipsburg, PA-USA
- Our choice on the UMI Green Machine
- Installation Notes:
- Hybrid coilover kits A224-XXXR and A204-XXXR can be used with no modifications required to the car
- 3058-650 or 3058-850 can be used with trimming to the upper spring locator
- Coming soon will be a full racing coilover which requires major construction in the upper spring pocket area
- The 3057 cannot be used with standard size coil springs and stock mount shocks.
| Fitment |
1978-1988 GM G-Body 1982-2003 S10/S15 |
|---|---|
| Platform | 1982-2003 S10/S15 |
| Manufacturer | UMI Performance |
| Direct Bolt-On |
Yes |
| Control Arm Style |
Tubular |
| Finish |
Powder Coat |
| UOM |
Pair |
| Material |
Mild Steel |
| Hardware |
Not Included |
| Modifications |
None |
This ‘3057-1 – Lower A-Arms, Coilover Only, Competition’ fits the following platforms:
1978-1988 GM G-Body
- 1978-1987 Buick Regal
- 1978-1987 Chevrolet El Camino
- 1978-1983 Chevrolet Malibu
- 1978-1988 Chevrolet Monte Carlo
- 1978-1987 GMC Caballero
- 1981-1988 Oldsmobile Cutlass
- 1982-1986 Pontiac Bonneville
- 1978-1987 Pontiac Grand Prix
1982-2003 S10/S15
- 1982-2003 Chevrolet S-10 2WD
- 1983-1994 Chevrolet S10 Blazer 2WD
- 1982-1990 GMC S15 2WD
- 1991-2003 GMC Sonoma 2WD
- 1983-1991 GMC S15 Jimmy 2WD
This 3057-1 – Lower A-Arms, Coilover Only, Competition fits the following vehicles:
Buick
Regal
- 1978 Buick Regal
- 1979 Buick Regal
- 1980 Buick Regal
- 1981 Buick Regal
- 1982 Buick Regal
- 1983 Buick Regal
- 1984 Buick Regal
- 1985 Buick Regal
- 1986 Buick Regal
- 1987 Buick Regal
Chevrolet
El Camino
- 1978 Chevrolet El Camino
- 1979 Chevrolet El Camino
- 1980 Chevrolet El Camino
- 1981 Chevrolet El Camino
- 1982 Chevrolet El Camino
- 1983 Chevrolet El Camino
- 1984 Chevrolet El Camino
- 1985 Chevrolet El Camino
- 1986 Chevrolet El Camino
- 1987 Chevrolet El Camino
Malibu
- 1978 Chevrolet Malibu
- 1979 Chevrolet Malibu
- 1980 Chevrolet Malibu
- 1981 Chevrolet Malibu
- 1982 Chevrolet Malibu
- 1983 Chevrolet Malibu
Monte Carlo
- 1978 Chevrolet Monte Carlo
- 1979 Chevrolet Monte Carlo
- 1980 Chevrolet Monte Carlo
- 1981 Chevrolet Monte Carlo
- 1982 Chevrolet Monte Carlo
- 1983 Chevrolet Monte Carlo
- 1984 Chevrolet Monte Carlo
- 1985 Chevrolet Monte Carlo
- 1986 Chevrolet Monte Carlo
- 1987 Chevrolet Monte Carlo
- 1988 Chevrolet Monte Carlo
S-10 2WD
- 1982 Chevrolet S-10 2WD
- 1983 Chevrolet S-10 2WD
- 1984 Chevrolet S-10 2WD
- 1985 Chevrolet S-10 2WD
- 1986 Chevrolet S-10 2WD
- 1987 Chevrolet S-10 2WD
- 1988 Chevrolet S-10 2WD
- 1989 Chevrolet S-10 2WD
- 1990 Chevrolet S-10 2WD
- 1991 Chevrolet S-10 2WD
- 1992 Chevrolet S-10 2WD
- 1993 Chevrolet S-10 2WD
- 1994 Chevrolet S-10 2WD
- 1995 Chevrolet S-10 2WD
- 1996 Chevrolet S-10 2WD
- 1997 Chevrolet S-10 2WD
- 1998 Chevrolet S-10 2WD
- 1999 Chevrolet S-10 2WD
- 2000 Chevrolet S-10 2WD
- 2001 Chevrolet S-10 2WD
- 2002 Chevrolet S-10 2WD
- 2003 Chevrolet S-10 2WD
S10 Blazer 2WD
- 1983 Chevrolet S10 Blazer 2WD
- 1984 Chevrolet S10 Blazer 2WD
- 1985 Chevrolet S10 Blazer 2WD
- 1986 Chevrolet S10 Blazer 2WD
- 1987 Chevrolet S10 Blazer 2WD
- 1988 Chevrolet S10 Blazer 2WD
- 1989 Chevrolet S10 Blazer 2WD
- 1990 Chevrolet S10 Blazer 2WD
- 1991 Chevrolet S10 Blazer 2WD
- 1992 Chevrolet S10 Blazer 2WD
- 1993 Chevrolet S10 Blazer 2WD
- 1994 Chevrolet S10 Blazer 2WD
GMC
Caballero
- 1978 GMC Caballero
- 1979 GMC Caballero
- 1980 GMC Caballero
- 1981 GMC Caballero
- 1982 GMC Caballero
- 1983 GMC Caballero
- 1984 GMC Caballero
- 1985 GMC Caballero
- 1986 GMC Caballero
- 1987 GMC Caballero
S15 2WD
- 1982 GMC S15 2WD
- 1983 GMC S15 2WD
- 1984 GMC S15 2WD
- 1985 GMC S15 2WD
- 1986 GMC S15 2WD
- 1987 GMC S15 2WD
- 1988 GMC S15 2WD
- 1989 GMC S15 2WD
- 1990 GMC S15 2WD
Sonoma 2WD
- 1991 GMC Sonoma 2WD
- 1992 GMC Sonoma 2WD
- 1993 GMC Sonoma 2WD
- 1994 GMC Sonoma 2WD
- 1995 GMC Sonoma 2WD
- 1996 GMC Sonoma 2WD
- 1997 GMC Sonoma 2WD
- 1998 GMC Sonoma 2WD
- 1999 GMC Sonoma 2WD
- 2000 GMC Sonoma 2WD
- 2001 GMC Sonoma 2WD
- 2002 GMC Sonoma 2WD
- 2003 GMC Sonoma 2WD
S15 Jimmy 2WD
- 1983 GMC S15 Jimmy 2WD
- 1984 GMC S15 Jimmy 2WD
- 1985 GMC S15 Jimmy 2WD
- 1986 GMC S15 Jimmy 2WD
- 1987 GMC S15 Jimmy 2WD
- 1988 GMC S15 Jimmy 2WD
- 1989 GMC S15 Jimmy 2WD
- 1990 GMC S15 Jimmy 2WD
- 1991 GMC S15 Jimmy 2WD
Oldsmobile
Cutlass
- 1981 Oldsmobile Cutlass
- 1982 Oldsmobile Cutlass
- 1983 Oldsmobile Cutlass
- 1984 Oldsmobile Cutlass
- 1985 Oldsmobile Cutlass
- 1986 Oldsmobile Cutlass
- 1987 Oldsmobile Cutlass
- 1988 Oldsmobile Cutlass
Pontiac
Bonneville
- 1982 Pontiac Bonneville
- 1983 Pontiac Bonneville
- 1984 Pontiac Bonneville
- 1985 Pontiac Bonneville
- 1986 Pontiac Bonneville
Grand Prix
- 1978 Pontiac Grand Prix
- 1979 Pontiac Grand Prix
- 1980 Pontiac Grand Prix
- 1981 Pontiac Grand Prix
- 1982 Pontiac Grand Prix
- 1983 Pontiac Grand Prix
- 1984 Pontiac Grand Prix
- 1985 Pontiac Grand Prix
- 1986 Pontiac Grand Prix
