Suspension & Chassis

The suspension and chassis are the foundation everything else is built on. Engine power, brake performance, and steering precision are all filtered through the suspension before they reach the road — and a chassis that can't manage those forces will undermine every other modification on the vehicle. Whether you're building a slammed show truck, a pro-touring muscle car, a lifted off-road rig, or a drag-focused street machine, this collection covers the complete suspension and chassis spectrum: coil springs, leaf springs, shocks, struts, control arms, sway bars, subframes, lift kits, lowering kits, alignment components, ladder bars, 4-link mounts, panhard bars, bump stops, ball joints, and more.

Coil springs and leaf springs determine ride height, spring rate, and the fundamental handling character of the vehicle. Lowering springs reduce ride height and lower the center of gravity for improved cornering performance and stance. Performance spring rates improve body control without the harshness of a full race setup. Lifted spring packs and add-a-leaf kits raise ride height for off-road clearance and load capacity on trucks and SUVs. Mono-leaf and multi-leaf configurations are available for a range of classic and modern truck applications.

Shocks and struts control spring oscillation and determine how the suspension responds to road inputs. A spring without a properly matched shock is an uncontrolled oscillator — the shock is what makes the suspension actually work. Adjustable shocks allow damping to be tuned for street comfort, performance driving, or track use without changing springs. Coilover conversions combine the spring and shock into a single adjustable unit, providing ride height and damping adjustment in one package — the preferred setup for pro-touring, road race, and performance street builds.

Control arms locate the wheel relative to the chassis and determine suspension geometry through the full range of travel. Tubular aftermarket control arms are lighter and stronger than factory stamped steel units, and many designs incorporate geometry corrections that reduce bump steer, improve camber curves, and allow lower ride heights without the binding that occurs when factory arms are used beyond their designed range of motion. Ball joints are wear items that should be inspected and replaced proactively on any performance build — a failed ball joint at speed is a catastrophic handling event.

Sway bars and end links reduce body roll during cornering by connecting the left and right suspension through a torsional spring. Larger diameter sway bars increase roll stiffness without affecting ride quality in straight-line driving. Adjustable end links allow fine-tuning of bar preload and geometry. Front and rear sway bar upgrades work together to balance understeer and oversteer characteristics — a critical tuning variable on any performance build.

Subframe connectors tie the front and rear subframes of unibody vehicles into a more rigid structure, reducing chassis flex that robs handling precision and causes body shake on rough roads. On high-power drag builds, subframe connectors are essential for consistent 60-foot times and predictable launch behavior. Ladder bars and 4-link rear suspension systems replace factory leaf springs on drag-focused builds, providing precise pinion angle control, anti-squat geometry, and consistent weight transfer characteristics that leaf springs can't match at high power levels.

Lift kits and lowering kits provide complete, engineered solutions for ride height changes — including all necessary components for a safe, properly aligned result. Panhard bars and track bars locate the rear axle laterally on solid axle applications, preventing side-to-side axle movement under cornering and acceleration. Alignment components — camber bolts, caster/camber plates, toe adjusters, and alignment tabs — allow precise geometry correction after suspension modifications.

This collection serves the full range of builds — show trucks being slammed on air or coilovers, pro-touring muscle cars being sorted for road course use, lifted trucks being built for trail capability, and drag cars being set up for maximum traction and consistent launches. Suspension component selection should always account for the full geometry picture — spring rate, shock valving, bar sizing, and alignment settings work as a system.

Suspension installations range from straightforward spring and shock swaps to full chassis fabrication projects requiring professional welding and alignment equipment. Any suspension modification should be followed by a professional four-wheel alignment before the vehicle is returned to regular use.

Shop the full Suspension & Chassis collection and build the founda...

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    Aldan American
    Coil-Over Kit GM 68-72 A-Body SB Double Adj.
    $2,130.95 USD
    $2,130.95 USD
    $2,130.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 450 lb/in Spring Rate Front / 140 lb/in Spring Rate Rear - Front / Rear - GM A-Body 1968-72 - KitCoil-Over Kit GM 68-72 A-Body S...
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    Aldan American
    Coil-Over Kit GM 73-77 A /78-88 G /75-79 X Frt
    $908.95 USD
    $908.95 USD
    $908.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 450 lb/in Spring Rate - Front - GM A-Body 1973-77 / G-Body 1978-88 / X-Body 1975-79 - PairCoil-Over Kit GM 73-77 A /78-88 G /75-7...
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    Aldan American
    Support Plates Coilover GM Lower Control Arms
    $63.95 USD
    $63.95 USD
    $63.95 USD
    Coil-Over Support Plates - Bolt On - Front - Lower - Steel - Black Powder Coat - GM Style - PairSupport Plates Coilover GM Lower Control Arms
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    Aldan American
    Coil-Over Kit GM 73-77 A /78-88 G /75-79 X Frt
    $917.95 USD
    $917.95 USD
    $917.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 550 lb/in Spring Rate - Front - GM A-Body 1973-77 / G-Body 1978-88 / X-Body 1975-79 - KitCoil-Over Kit GM 73-77 A /78-88 G /75-79...
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    Aldan American
    Coil-Over Kit GM 63-82 Vette 58-70 Full Front
    $928.95 USD
    $928.95 USD
    $928.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 550 lb/in Spring Rate - Front - Chevy Corvette 1963-82 - PairCoil-Over Kit GM 63-82 Vette 58-70 Full Front
  • ALD300233.jpg
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    Aldan American
    Coil-Over Kit GM 67-69 F-Body/68-74 X-Body Frt
    $917.95 USD
    $917.95 USD
    $917.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 450 lb/in Spring Rate - Front - GM F-Body 1967-69 / GM X-Body 1968-74 - KitCoil-Over Kit GM 67-69 F-Body/68-74 X-Body Frt
  • ALD300240.jpg
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    Aldan American
    Coil-Over Kit GM 68-72 A-Body BB Double Adj.
    $2,151.95 USD
    $2,151.95 USD
    $2,151.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 550 lb/in Spring Rate Front / 160 lb/in Spring Rate Rear - Front / Rear - GM A-Body 1968-72 - KitCoil-Over Kit GM 68-72 A-Body B...
  • ALD300244.jpg
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    Aldan American
    Coil-Over Kit GM 63-82 Vette 58-70 Full Front
    $928.95 USD
    $928.95 USD
    $928.95 USD
    Coil-Over Shock Kit - RCX Series - Twintube - Double Adjustable - 450 lb/in Spring Rate - Front - Chevy Corvette 1963-82 - PairCoil-Over Kit GM 63-82 Vette 58-70 Full Front
  • ALD300134.jpg
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    Aldan American
    Coil Over Shock Kit - Front Corvette 63-82
    $707.95 USD
    $707.95 USD
    $707.95 USD
    Coil-Over Shock Kit - Phantom Series - Twintube - Single Adjustable - 450 lb/in Spring Rate - Front - Chevy Corvette 1963-82 - PairCoil Over Shock Kit - Front Corvette 63-82
  • ALD300135.jpg
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    Aldan American
    Coil-Over Kit GM 63-82 Vette 58-70 Full Frt.
    $707.95 USD
    $707.95 USD
    $707.95 USD
    Coil-Over Shock Kit - Phantom Series - Twintube - Single Adjustable - 550 lb/in Spring Rate - Front - Pontiac Star Chief 1958-66 - PairCoil-Over Kit GM 63-82 Vette 58-70 Full Frt.
  • ALD300106.jpg
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    Aldan American
    Coil-Over Kit GM 78-88 G-Body Small Block
    $1,803.95 USD
    $1,803.95 USD
    $1,803.95 USD
    Coil-Over Shock Kit - Road Comp Series - Twintube - Single Adjustable - 450 lb/in Spring Rate - Front / Rear - GM G-Body 1978-88 - KitCoil-Over Kit GM 78-88 G-Body Small Block
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    Aldan American
    Shock Kit TruLine Ford 64-73 Rear
    $563.95 USD
    $563.95 USD
    $563.95 USD
    Shock - TruLine Series - Single Adjustable - Twintube - Aluminum - Clear Anodized - Rear - Mercury Cougar 1964-73 - PairShock Kit TruLine Ford 64-73 Rear
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    Aldan American
    Coil Over Shock - Single Adj. Phantom Series
    $240.95 USD
    $240.95 USD
    $240.95 USD
    Shock - Coil-Over - Phantom Series - Single Adjustable - 9.5 in Compressed - 13 in Extended - 2 in Shock OD - Adjustable - Aluminum - Natural - EachCoil Over Shock - Single Adj. Phantom Series
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    Aldan American
    Coil Over Shock Kit - Front GM A-Body 64-67
    $697.95 USD
    $697.95 USD
    $697.95 USD
    Coil-Over Shock Kit - Phantom Series - Single Adjustable - Front - 450 lb/in Spring Rate - GM A-Body 1964-67 - KitCoil Over Shock Kit - Front GM A-Body 64-67
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    Aldan American
    Coil Over Shock Kit - Rear 64-72 GM A-Body
    $1,217.95 USD
    $1,217.95 USD
    $1,217.95 USD
    Coil-Over Shock Kit - Phantom Series - Twintube - Single Adjustable - 160 lb/in Spring Rate - Rear - GM A-Body 1964-72 - KitCoil Over Shock Kit - Rear 64-72 GM A-Body
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    Aldan American
    Coil Over Shock Kit - Front GM F-Body 70-81
    $697.95 USD
    $697.95 USD
    $697.95 USD
    Coil-Over Shock Kit - Phantom Series - Twintube - Single Adjustable - 450 lb/in Spring Rate - Front - GM F-Body 1970-81 - PairCoil Over Shock Kit - Front GM F-Body 70-81

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