When it's time to replace or upgrade your vehicle's suspension, the sheer number of brands and options can be overwhelming. One name that consistently appears in discussions among enthusiasts and mechanics is PST (Performance Suspension Technology). PST suspension parts have a reputation for durability and performance, but what exactly sets them apart? This guide covers everything you need to know about PST suspension components, from what they offer to how to select the right parts for your ride.
What Are PST Suspension Parts?
PST, short for Performance Suspension Technology, is an American manufacturer of suspension components for cars and trucks. They specialize in polyurethane bushings, control arms, tie rods, ball joints, sway bar links, and complete suspension kits. PST is particularly well-known for their polyurethane products, which replace factory rubber bushings to improve handling and longevity.
Unlike some brands that focus solely on racing or off-road use, PST covers a broad spectrum: classic car restorations, daily drivers, muscle cars, and light trucks. Their parts are designed to fit OEM specifications while offering upgraded materials. Most PST components are made in the USA, which appeals to buyers looking for domestic quality.
Key Product Categories
Polyurethane Bushings
PST's core product line is polyurethane bushings. These replace the rubber bushings found in control arms, sway bars, leaf springs, and other suspension points. Rubber bushings wear out over time, causing sloppy handling and noise. Polyurethane is denser and more resistant to oil, grease, and ozone. PST offers different durometers (hardness) for street or performance use.
- Street durometer (usually 95A): Good balance of comfort and performance for daily driving.
- Performance durometer (harder, e.g., 70D): For track or aggressive street use, but may transfer more vibration.
Suspension Rebuild Kits
PST sells complete front end rebuild kits. These include all necessary bushings, ball joints, tie rod ends, and sometimes control arms for a specific vehicle model. Kits are available for popular cars like Ford Mustangs, Chevrolet Camaros, and many trucks. Buying a kit ensures all components match and saves time compared to sourcing individual parts.
Control Arms
PST offers new or rebuilt control arms with polyurethane bushings pre-installed. For classic cars, these are often more affordable than OEM replacements and deliver better handling. They also sell adjustable control arms for alignment correction on lowered vehicles.
Sway Bar Links and Components
Polyurethane sway bar bushings and end links are sold separately or in kits. These reduce body roll and improve cornering without making the ride harsh, provided the correct durometer is chosen.
Why Choose PST Over Other Brands?
PST competes with brands like Energy Suspension, Prothane, and Moog. Here's where PST stands out:
- Comprehensive coverage: Classic, performance, and truck applications. Many niche models (e.g., 1960s Mopar, early Ford Broncos) have direct-fit PST kits.
- Quality control: Made in USA, known for consistent tolerances. Polyurethane doesn't crack as easily as some competitors.
- Customer support: PST offers technical support by phone or email. They can recommend specific durometer for your use.
- Price: Generally mid-range—not the cheapest, but not overpriced. Kits often cost less than buying individual parts from other premium brands.
However, PST is not the only option. Energy Suspension is also USA-made and offers even more colors and sway bar bushing sizes. Prothane is similar but some users note PST's bushings have tighter fitment. Moog is better for rubber OEM-style parts; PST is better if you want polyurethane.
Choosing the Right PST Suspension Parts
Determine Your Goal
- Daily driver: Stick with PST's street durometer polyurethane. It's firmer than rubber but not uncomfortable. Use their front end kits for a complete overhaul.
- Performance street/autocross: Consider their performance durometer bushings and adjustable control arms if needed.
- Classic restoration: If you want show quality and some handling improvement, PST's polyurethane parts maintain a factory appearance while reducing deflection.
- Truck towing: Polyurethane bushings in leaf spring eyes and sway bars reduce sway. Use street durometer to avoid a harsh ride when unloaded.
Check Vehicle Fitment
PST's website allows you to search by year, make, and model. Double-check compatibility with your vehicle's specific submodel (e.g., 1969 Mustang with or without power steering). Some kits are designed for manual steering; others for power steering. Always confirm the part number with your existing components.
Polyurethane vs. Rubber for Certain Applications
Some suspension points like ball joints should remain rubber or have a greaseable design. PST offers ball joints with polyurethane boots but rubber isn't available from them. For ball joints, many mechanics prefer Moog for greaseability. PST's polyurethane ball joints are suitable for street use but require periodic greasing.
Installation Considerations
Polyurethane bushings need lubrication during installation to prevent squeaking. PST supplies a grease packet, but it's wise to buy an extra tube of polyurethane-specific grease. Some bushings require pressing; others are split design for easier installation. Watch PST's instructional videos for guidance.
Maintenance and Longevity
PST polyurethane bushings outlast rubber significantly—often 100,000 miles or more. However, they require periodic inspection for cracking or hardening. In extreme climates, they may dry out slightly faster. Applying a silicone spray occasionally can extend life. Ball joints and tie rods should be checked for play every oil change.
If you encounter squeaking after installation, re-grease the bushings. Squeaks are usually due to insufficient grease or assembly without lubrication. PST's grease is compatible with polyurethane; don't use petroleum-based grease as it degrades the material.
Common Questions About PST Suspension Parts
Are PST parts better than OEM? For handling, yes—polyurethane reduces flex. For noise, OEM rubber is quieter. Choose based on priority.
Can I mix PST and other brand bushings? Yes, but for consistency, use the same durometer. PST's grease is fine with other polyurethane brands.
Do PST parts fit lifted trucks? Some control arms are designed for stock heights. For lifted trucks, check if the kit includes extended brake lines and alignment specs.
How long do PST bushings last? Typically 50,000-100,000 miles, often longer than the vehicle itself if properly maintained.
Warranty? PST offers a limited lifetime warranty against defects. Keep your receipt.
Final Recommendation
For most drivers wanting to refresh a tired suspension without breaking the bank, PST suspension parts offer excellent value. Their polyurethane bushings and complete kits simplify the process of upgrading from worn rubber. Start with a front end rebuild kit for your specific car or truck—it includes everything needed and usually costs less than separate parts. If you're restoring a classic and want period-correct looks, PST's polyurethane parts maintain a stock appearance while improving drivability.
For daily driving, choose the street durometer. If you autocross or track occasionally, the performance durometer is a good upgrade, but expect more vibration. Avoid using polyurethane ball joints if you prefer OEM-style greaseable units—Moog might be better there. Overall, PST is a solid choice for any enthusiast who values durability and handling above all else.