Suspension and chassis upgrades can improve the way a vehicle responds during acceleration, braking, cornering, and changes in road surface. The correct combination depends on how the vehicle is used and which factory components are being retained.
Too Fast Auto Parts carries UMI Performance products for a range of compatible street, performance, restoration, autocross, drag-racing, and pro-touring applications.
Available products vary by platform. Review each product page for confirmed fitment, construction, adjustment range, bushing type, included hardware, installation requirements, and recommended supporting modifications.
A suspension part should not be selected based only on a general vehicle category. Control-arm length, mounting locations, spring type, frame design, shock position, axle configuration, steering geometry, and chassis dimensions vary significantly between platforms.
Vehicle-specific components are designed around defined mounting points and geometry. This can help reduce the amount of custom fabrication required and make it easier to build a coordinated suspension package.
Before selecting a component, identify:
Control arms connect the vehicle chassis or frame to the suspension assembly. Their dimensions, mounting points, bushings, and adjustment features influence wheel movement and suspension geometry.
Depending on the application, UMI control-arm products may include upper or lower front A-arms, rear upper control arms, rear lower control arms, adjustable arms, non-adjustable arms, lift bars, and complete control-arm packages.
Adjustable components can provide additional setup flexibility, but they require correct measurement and alignment. Do not change control-arm length without understanding how it affects pinion angle, axle position, wheelbase, suspension bind, and handling.
Non-adjustable control arms are normally manufactured at a fixed length for the intended application. They may be suitable for vehicles using a common suspension configuration and ride height.
Adjustable control arms allow certain dimensions or angles to be changed. They may be useful for lowered vehicles, modified drivetrains, axle swaps, or performance setups where additional alignment or pinion-angle adjustment is required.
Adjustable parts should be installed and set by someone familiar with the vehicle’s suspension geometry.
A sway bar connects the left and right sides of the suspension and helps resist body roll during cornering. Changing sway-bar diameter, construction, mounting location, or adjustment can alter the handling balance of the vehicle.
Depending on the application, UMI sway-bar products may be available for the front, rear, or as a matched kit.
Selecting the largest available sway bar is not automatically the best choice. The correct setup depends on vehicle weight, spring rates, tire grip, ride height, chassis stiffness, shock valving, and the balance between front and rear roll resistance.
Some sway bars provide multiple end-link mounting positions. Changing the selected position can alter the effective stiffness of the bar.
Adjustments should be made gradually and evaluated in a controlled environment. Incorrect setup may create an undesirable increase in understeer, oversteer, or wheel lift.
Coilovers, shocks, and springs work together to support the vehicle, control suspension movement, and establish ride height.
Coilover conversions may provide additional ride-height or damping adjustment, but they can also require specific mounting brackets, reinforcements, shock towers, control arms, or spring-clearance checks.
Lowering springs change the vehicle’s ride height and suspension travel. Lowering a vehicle without considering shock length, bump-stop clearance, wheel alignment, tire clearance, and suspension geometry can lead to poor ride quality or component contact.
Confirm whether the selected kit includes shocks, springs, mounts, bearings, adjustment tools, and installation hardware.
A handling kit combines multiple suspension components intended to work together for a particular platform or performance level.
Depending on the package, a kit may include control arms, sway bars, shocks, springs, braces, steering components, or other suspension hardware.
A complete kit can simplify component selection, but the buyer must still verify vehicle compatibility and understand whether additional parts, alignment, welding, or chassis preparation will be required.
The correct handling package depends on how the vehicle will be used:
Chassis braces are designed to connect or reinforce areas of the vehicle structure. Depending on the platform, available components may include front frame braces, shock-tower braces, subframe connectors, rear shock braces, driveshaft loops, and control-arm reinforcement products.
Bolt-in and weld-in components have different installation requirements. Weld-in braces should be installed by someone familiar with chassis preparation, welding technique, vehicle alignment, and fuel or electrical safety.
Inspect the mounting areas for rust, cracks, previous repairs, and structural damage before installing reinforcement parts.
GM A-Body applications can include multiple generations and vehicle models. Components may vary according to the production year, frame, front suspension, rear control-arm arrangement, brakes, and drivetrain.
Do not assume that a part designed for one A-Body generation will fit another. Confirm the exact year range and platform stated in the product listing.
GM F-Body platforms include several generations with significantly different front suspension, rear suspension, chassis, steering, and drivetrain layouts.
Available products may include control arms, K-members, subframe connectors, torque arms, panhard bars, coilover components, springs, shocks, sway bars, chassis braces, and drivetrain-mounting components.
Confirm whether the product is intended for a first-, second-, third-, or fourth-generation F-Body before ordering.
GM G-Body suspension upgrades may include front A-arms, rear control arms, sway bars, braces, springs, shocks, coilover conversions, steering parts, and complete handling packages.
Modified ride height, rear-axle changes, brake conversions, frame condition, and wheel fitment can affect which components are appropriate.
Truck suspension components must be selected according to the vehicle generation, chassis, suspension design, ride height, intended use, and load requirements.
C10 and S10 applications may use different A-arms, sway bars, springs, coilover mounts, lowering components, shocks, and handling packages.
Confirm whether frame modification, a C-notch, different spindles, or additional clearance work is required before beginning a lowering or coilover conversion.
Mustang suspension and chassis products vary by generation. Available applications may include rear control arms, lift bars, panhard bars, relocation brackets, chassis braces, shocks, sway bars, and related components.
Confirm the exact Mustang generation, model year, engine, rear axle, suspension configuration, and existing modifications before ordering.
Suspension components may use rubber, polyurethane, Delrin, spherical bearings, or a combination of materials.
Each option can affect noise, vibration, movement, maintenance, and handling:
Choose the bushing or bearing type according to the intended use of the vehicle rather than selecting solely by price or stiffness.
Before purchasing, verify:
Many suspension and chassis upgrades require more than basic bolt-on installation. Components affecting steering geometry, wheel alignment, pinion angle, axle position, spring mounting, or chassis structure should be installed and adjusted by a qualified technician.
A professional alignment should be completed after replacing control arms, steering components, springs, coilovers, K-members, or other parts that alter wheel position or suspension geometry.
Recheck fastener torque and component clearance after the initial installation period according to the product instructions.
Browse the available UMI Performance products above and use the individual product pages to confirm fitment, specifications, adjustment features, package contents, and installation requirements.
For additional options, explore our aftermarket control arms, sway bars, coilovers, and suspension parts.
For fitment assistance, contact Too Fast Auto Parts with your vehicle’s year, make, model, platform, engine, drivetrain, current suspension setup, ride height, and intended use.
UMI Performance offers products for multiple vehicle platforms, including several generations of GM A-Body, B-Body, C10, F-Body, G-Body, S10, and Ford Mustang applications. Fitment depends on the individual product.
Confirm the year, make, model, platform, suspension configuration, engine, drivetrain, ride height, and existing modifications. Compare these details with the product fitment information before ordering.
Some UMI control arms are adjustable, while others use a fixed-length design. Review the individual product specifications and adjustment features.
An alignment is generally recommended after replacing components that affect steering or suspension geometry, including A-arms, coilovers, springs, K-members, and steering parts.
Polyurethane provides a firmer connection while retaining some isolation. Spherical bearings reduce compliance and allow precise articulation but may transmit more noise and vibration.
Many components may be suitable for street use, but comfort, noise, bushing type, spring rate, ride height, and maintenance requirements vary by product.
Package contents vary. Confirm whether shocks, springs, mounts, brackets, bearings, adjustment tools, and hardware are included before ordering.
It may be possible, but geometry, mounting dimensions, spring rates, shock travel, bushings, and adjustment ranges must be compatible. Evaluate the complete suspension system before mixing components.
Some braces are bolt-in while others require welding. Review the installation instructions and product description for the specific component.
Intended use varies by kit. Some packages focus on street handling, autocross, pro-touring, lowering, or drag-racing applications. Select the package that matches the vehicle and performance objective.
