Collection: UMI Performance

Muscle Car Suspension
UMI Performance
UMI Performance makes chassis and suspension parts for GM muscle car and classic platforms — A-Body, B-Body, F-Body (Camaro and Firebird), G-Body, H-Body, X-Body, W-Body, C10 trucks and S10/S15 — plus the 1979-2014 Ford Mustang, the 2015-and-newer Ford F-150, the Pontiac G8, the fifth- and sixth-generation Camaro and the Cadillac CTS-V. Most arms, bars and brackets are offered in a red or a black powder-coat finish.
Control ArmsK-MembersSway Bars
What We Carry from UMI Performance
Upper and lower control arms, A-arms, trailing arms and torque arms — boxed, tubular and adjustable
Panhard bars, traction bars, tie rod adjusters and bump steer kits
Tubular K-members, transmission crossmembers and subframe connectors
Front and rear sway bars, sway bar brackets and end links
Lowering springs, coilover conversion brackets, shocks and spring kits
Engine mounts, differential bushings, ball joints and driveshaft safety loops
Confirm your vehicle's body platform, engine and transmission before ordering. Each listing names the UMI part number and finish, and the Fits These Vehicles list on the product page gives the exact years and models.
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Vendor:UMI Performance
UMI Performance 4058-R Rear Shock Tower Brace Bolt-In (Car Only) Red
✓ In Stock • Only 1 leftRegular price $ 162.15Regular price$ 178.37Sale price $ 162.15Sale -
Vendor:UMI Performance
UMI Performance 4055 Body Mount Frame Repair Kit for 1964-1972 GM A-Body
✕ Out of StockRegular price $ 34.64Regular price$ 38.11Sale price $ 34.64Sold out -
Vendor:UMI Performance
UMI Performance 4051R Rear Lowering Springs 2in Lowering for 1967-1972 A-Body
✕ Out of StockRegular price $ 189.99Regular price$ 208.99Sale price $ 189.99Sold out -
Vendor:UMI Performance
UMI Performance 4051 Spring Kit 2in Lowering for 1967-1972 GM A-Body
✓ In Stock • Only 1 leftRegular price $ 319.99Regular price$ 351.99Sale price $ 319.99Sale -
Vendor:UMI Performance
UMI Performance 4050R Rear Lowering Springs 1in Lowering for 1967-1972 A-Body
✓ In Stock • Only 4 leftRegular price $ 189.99Regular price$ 208.99Sale price $ 189.99Sale -
Vendor:UMI Performance
UMI Performance 4050F 1in Lowering Spring Front Set for 1964-1972 GM A-Body
✓ In Stock • Only 3 leftRegular price $ 171.33Regular price$ 188.47Sale price $ 171.33Sale -
Vendor:UMI Performance
UMI Performance 4049F Factory Height Springs Front for 1964-1972 GM A-Body
✓ In Stock • Only 1 leftRegular price $ 171.33Regular price$ 188.47Sale price $ 171.33Sale -
Vendor:UMI Performance
UMI Performance 4049 Spring Kit Factory Height for 1967-1972 GM A-Body
✓ In Stock • Only 1 leftRegular price $ 349.99Regular price$ 384.99Sale price $ 349.99Sale -
Vendor:UMI Performance
UMI Performance 4048R Factory Height Springs Rear for 1964-1966 GM A-Body
✕ Out of StockRegular price $ 189.99Regular price$ 208.99Sale price $ 189.99Sold out -
Vendor:UMI Performance
UMI Performance 403534-R Solid Front and Rear Sway Bar Red for 1964-1972 A-Body
✓ In Stock • Only 1 leftRegular price $ 419.99Regular price$ 461.99Sale price $ 419.99Sale -
Vendor:UMI Performance
UMI Performance 403534-B Solid Front and Rear Sway Bar Kit Black
✓ In Stock • Only 2 leftRegular price $ 419.99Regular price$ 461.99Sale price $ 419.99Sale -
Vendor:UMI Performance
UMI Performance 4035-R Front Sway Bar 1-1/4in Solid Red for 1964-1977 A-Body
✕ Out of StockRegular price $ 259.99Regular price$ 285.99Sale price $ 259.99Sold out -
Vendor:UMI Performance
UMI Performance 4035-B Front Sway Bar 1-1/4in Solid Black for 1964-1977 A-Body
✓ In Stock • Only 1 leftRegular price $ 259.99Regular price$ 285.99Sale price $ 259.99Sale -
Vendor:UMI Performance
UMI Performance 4034-R 1in Solid CrMo Rear Sway Bar Red for 1964-1972 GM A-Body
✓ In Stock • Only 5 leftRegular price $ 171.33Regular price$ 188.47Sale price $ 171.33Sale -
Vendor:UMI Performance
UMI Performance 4034-B 1in Solid CrMo Rear Sway Bar Black for 1964-1972 A-Body
✕ Out of StockRegular price $ 171.33Regular price$ 188.47Sale price $ 171.33Sold out -
Vendor:UMI Performance
UMI Performance 4029-B Control Arm Reinforcements/Frame Braces Black
✓ In Stock • Only 1 leftRegular price $ 162.15Regular price$ 178.37Sale price $ 162.15Sale