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 230910-B Front A-Arms Road Race Lower/Adjustable Upper Black
✓ In Stock • Ships from manufacturerRegular price $ 1,209.99Regular price$ 1,330.99Sale price $ 1,209.99Sale -
Vendor:UMI Performance
UMI Performance 230910-R A-Arms Road Race Boxed Lower and Adjustable Upper Red
✕ Out of StockRegular price $ 1,209.99Regular price$ 1,330.99Sale price $ 1,209.99Sold out -
Vendor:UMI Performance
UMI Performance 501619-R Adjustable Upper/Lower Control Arm Red for 1975 H-Body
✓ In Stock • Ships from manufacturerRegular price $ 429.99Regular price$ 472.99Sale price $ 429.99Sale -
Vendor:UMI Performance
UMI Performance 4048 Spring Kit Factory Height for 1964-1966 GM A-Body
✓ In Stock • Ships from manufacturerRegular price $ 349.99Regular price$ 384.99Sale price $ 349.99Sale -
Vendor:UMI Performance
UMI Performance 3050 Lowering Spring Kit 1in Lowering for 1978-1988 GM G-Body
✓ In Stock • Ships from manufacturerRegular price $ 319.99Regular price$ 351.99Sale price $ 319.99Sale -
Vendor:UMI Performance
UMI Performance 4053 Spring Kit 2in Lowering for 1964-1966 GM A-Body
✓ In Stock • Ships from manufacturerRegular price $ 319.99Regular price$ 351.99Sale price $ 319.99Sale -
Vendor:UMI Performance
UMI Performance 4052 Spring Kit 1in Lowering for 1964-1966 GM A-Body
✓ In Stock • Ships from manufacturerRegular price $ 319.99Regular price$ 351.99Sale price $ 319.99Sale -
Vendor:UMI Performance
UMI Performance 4050 1in Lowering Spring Set for 1967-1972 GM A-Body
✓ In Stock • Ships from manufacturerRegular price $ 319.99Regular price$ 351.99Sale price $ 319.99Sale -
Vendor:UMI Performance
UMI Performance 501619-B Adjustable Upper and Lower Control Arm Kit Black
✓ In Stock • Ships from manufacturerRegular price $ 429.99Regular price$ 472.99Sale price $ 429.99Sale -
Vendor:UMI Performance
UMI Performance 501518-R Upper and Lower Control Arm Kit Red for 1975 GM H-Body
✓ In Stock • Ships from manufacturerRegular price $ 349.99Regular price$ 384.99Sale price $ 349.99Sale -
Vendor:UMI Performance
UMI Performance 501518-B Upper and Lower Control Arm Black for 1975 GM H-Body
✓ In Stock • Ships from manufacturerRegular price $ 349.99Regular price$ 384.99Sale price $ 349.99Sale -
Vendor:UMI Performance
UMI Performance 402717-B Double Adjustable Upper/Lower Rear Control Arms Black
✕ Out of StockRegular price $ 619.99Regular price$ 681.99Sale price $ 619.99Sold out -
Vendor:UMI Performance
UMI Performance 402416-R Rear Control Arms Boxed Lowers Red for 1968-1972 A-Body
✓ In Stock • Ships from manufacturerRegular price $ 479.99Regular price$ 527.99Sale price $ 479.99Sale -
Vendor:UMI Performance
UMI Performance 402416-B Rear Control Arm Kit Boxed Lowers Black
✓ In Stock • Ships from manufacturerRegular price $ 479.99Regular price$ 527.99Sale price $ 479.99Sale -
Vendor:UMI Performance
UMI Performance 402117-B Rear Control Arms Boxed Lowers Adjustable Uppers Black
✓ In Stock • Ships from manufacturerRegular price $ 619.99Regular price$ 681.99Sale price $ 619.99Sale -
Vendor:UMI Performance
UMI Performance 402116-R Rear Control Arms Boxed Lowers Red for 1968-1972 A-Body
✓ In Stock • Ships from manufacturerRegular price $ 519.99Regular price$ 571.99Sale price $ 519.99Sale