UMI Performance
UMI Performance 78-88 GM G-Body 82-03 S10/S15 Upper & Lower A-arm Coilover Only- 305756-3-B
Tremendous front grip and a range of features can be yours with UMI’s 305756-3 kit. This a-arm kit allows for 10 degrees of caster while maintaining the standard track width and wheelbase. The removable lower shock mount enables spring and shock changes at the track. The tall lower ball joint optimizes roll center, camber gain, center of gravity, and lowers ride height by ½”. Delrin bushings ensure the lower a-arm travels smoothly for bind-free operation. The new lower a-arm works in tandem with our popular 3056-3 adjustable upper arm, which offers minimal shim adjustability, 1” taller-than-stock ball joints, and exceptionally smooth rod ends.
Also included on the lower a-arm is a double shear sway bar mounting system, compatible with UMI sway bars and many aftermarket units designed for stock locations. An adjustable aluminum steering stop limits steering lock to prevent tire and wheel damage. It is available in UMI red or black powder coat, 100% designed, manufactured, and tested with pride in the USA, and battle-tested on the iconic UMI Green Machine.
Performance note: UMI recommends adding the P/N 3060 bump steer kit for optimal performance.
Installation Notes: The 3057-1 is a versatile competition a-arm that can be used with various springs and shocks, including hybrid coilover kits and Ridetech setups. Please contact us for further assistance. Overall, UMI’s 305756-3 kit provides superior performance and durability for your vehicle.
PRODUCT FEATURES
- Direct bolt-in for 1978-1988 GM G-body
- Adjustable upper a-arm with rod ends for easy alignment
- 10 degrees caster potential while maintaining spindle pin location
- Rearward upper ball joint for added 5-6 degrees caster potential
- Forward lower ball joint for increased caster and improved steering feel
- Rod ends with superior friction reduction for quick response
- Delrin bushings for improved steering response and reduced deflection
- Taller upper ball joints for improved camber gain and traction
- Upper and lower a-arms made from USA Made DOM steel tubing
- Removable double shear mount for easy spring/shock replacement
- Compatible with Afco, Viking, Ridetech and other aftermarket shocks/springs
- Adjustable steering stop
- Double shear swivel sway bar mounts for compatibility with UMI and other sway bars
- Designed, tested, manufactured and raced in the USA
- Installation Notes:
- Can be used with hybrid coilover kits A224-XXXR and A204-XXXR without modifications
- Can be used with coilover kits 3058-650 or 3058-850 with trimming to upper spring locator
- Future full racing coilover option coming soon
- Ridetech and similar coilover setups will work properly
- Not compatible 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 '305756-3 - GM A-Arm Kit, Upper and Lower, Competition, Coilover' 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 305756-3 - GM A-Arm Kit, Upper and Lower, Competition, Coilover 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
- 1987 Pontia