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Upgrading your suspension changes how your car handles more than almost any other modification. The right setup depends on how you drive -- a daily driver that sees occasional canyon runs has very different needs than a dedicated track car or a truck used for towing and off-road work.
For most street-driven builds, the choice comes down to coilovers versus lowering springs. Coilovers replace your factory struts and springs with a single adjustable unit where the spring and shock are matched and tuned together -- you get adjustable ride height, adjustable damping, and matched components that work as a system. Lowering springs drop your car a fixed amount and work with your existing shocks, which is a simpler and cheaper approach but requires careful attention to spring and shock compatibility to avoid making handling worse than stock.
Beyond springs and shocks, a complete suspension setup often includes camber plates or camber bolts to correct alignment after lowering, sway bar upgrades to reduce body roll in corners, and adjustable control arms to restore suspension geometry on more aggressive builds. Most street builds don't need all of this, but knowing what's available helps you plan the right setup from the start.
Brands carried
For coilovers, the lineup includes BC Racing BR Series (30-way adjustable, fully rebuildable), Tein Street Basis Z and Flex Z, Godspeed MonoSS and MonoRS, Riaction GT-1 (32-way adjustable), and Fortune Auto for premium street and track builds. For shocks and struts specifically, Bilstein is the standout brand -- their B6 and B8 series are OEM-grade performance shocks trusted by enthusiasts and used as factory upgrades on BMW, Porsche, and Audi vehicles. KW Suspensions covers both coilovers and standalone shock options for European platforms. For lowering springs, Eibach, H&R, and Tein are the most consistent performers across the widest range of vehicles.
Frequently asked questions
What suspension parts does Redline360 carry?
The suspension catalog includes coilovers, lowering springs, shocks and struts, camber kits, sway bars, control arms, subframe braces, and related hardware. Brands include Bilstein, KW, BC Racing, Tein, Eibach, H&R, Godspeed, Fortune Auto, Megan Racing, Rev9, Riaction, Truhart, and more across 50+ makes and models.
What is the difference between coilovers and lowering springs?
Coilovers replace your factory struts and springs as a single unit with matched, tuned components and adjustable ride height. Lowering springs replace only the springs and work with your existing shocks. Coilovers give you more control and better long-term performance. Lowering springs are a simpler, less expensive option that works best when your factory shocks are in good condition. See our full coilovers vs lowering springs guide for a detailed breakdown.
Are Bilstein shocks worth it?
Yes, for most applications. Bilstein is one of the few shock manufacturers that supplies directly to vehicle manufacturers as an OEM upgrade -- the same engineering that goes into factory sport packages on BMW M, Porsche, and Audi S-line vehicles is available as an aftermarket upgrade for your car. Their B6 series is a direct-fit performance upgrade over stock that improves handling without sacrificing ride comfort. Browse our Bilstein suspension collection for vehicle-specific options.
Do I need an alignment after upgrading suspension?
Yes, always. Any change to ride height or suspension geometry affects camber and toe. Get a 4-wheel alignment after installing coilovers, lowering springs, or any suspension component that affects ride height.
What suspension brands does Redline360 carry?
BC Racing, Bilstein, KW Suspensions, Tein, Eibach, H&R, Fortune Auto, Godspeed, Megan Racing, Riaction, Rev9, Truhart, Ohlins, ISC Suspension, D2 Racing, Function and Form, Skunk2, Tanabe, and more. Use the fitment selector to find brands available for your specific vehicle.