RS*R Coil Spring Lowering Kit

RS*R Coil Spring Lowering Kits: Japanese Engineering for Street and Track

RS*R (Racing Studio-R) has been one of the most respected names in performance suspension since establishing its own manufacturing facility in September 1980. Born from a dissatisfaction with the quality of available aftermarket parts, RS*R set out to engineer suspension components that no one else was making — and their coil spring lowering kits remain one of the clearest expressions of that founding philosophy.

Purpose-Built Product Lines for Every Build Level

What separates RS*R in the coil spring lowering kit segment is a tiered lineup that gives enthusiasts a precisely matched option depending on how aggressively they want to drop their vehicle. Each line is engineered around the factory suspension geometry, accounting for shock dampening rates, OEM spring rates, and ride height targets — so the springs work with your existing setup rather than against it.

• RS*R Down: The entry point into the RS*R lowering world. The Down Sus provides a mild drop and improved handling for drivers looking to reduce fender-to-wheel gap, while still taking the factory suspension geometry, shock dampening, and spring rate into full consideration. Typical drop figures run approximately 1.0"–1.4" front and rear depending on application.
• RS*R Super Down: The Super Down springs go lower, providing a more aggressive stance and sharper cornering than the standard Down series. The Super Down delivers a lowered stance and improved handling, with RS*R ensuring the springs are tuned for each specific vehicle both for performance and comfort. Drop heights typically reach around 1.8"–2.0" front and rear on applicable platforms.
• RS*R Ti2000 Down: The Ti2000 Down delivers a front and rear drop in the 0.8"–1" range , making it the choice for drivers who want improved dynamics with the most livable daily ride quality. It sits between a purely stock feel and the more committed stance of the Down series.

What Makes RS*R Coil Springs Stand Out

Taking into consideration the factory suspension geometry, shock dampening, spring rate, and ride height levels, RS*R ensures that the springs are made for each car both for performance and for comfort. This vehicle-specific engineering approach means each kit is dialed in — not a one-size-fits-all solution.

RS*R lowering springs are engineered to balance comfort and performance, reducing wheel gap and enhancing stance while improving handling without sacrificing ride quality, making them suitable for daily use. Springs also feature a powder-coated finish for long-term corrosion resistance, and highly durable construction is guaranteed to perform under harsh conditions.

Down springs offer a mild drop with improved handling while maintaining decent ride comfort for daily use, while Super Down springs provide a more aggressive stance and sharper cornering — and both options help reduce body roll, enhance steering response, and improve aerodynamics.

RS*R performance parts are developed with motorsport expertise and tested on actual vehicles, with advanced materials and engineering delivering superior durability, precision, and long-lasting performance. That real-world testing background — rooted in RS*R's active participation in Super GT, drifting, drag racing, and rally competition — carries directly into the spring rates and tolerances of every coil spring lowering kit they produce.

The Right Kit for Your Build

Whether you're building a clean street car with a tasteful drop or a more committed performance machine that demands sharper cornering geometry, RS*R's coil spring lowering kits offer a clearly defined path. Browse the full selection of coil spring lowering kits or explore everything RS*R brings to the suspension market on the RS*R brand page.