HKS Valve Springs for 85-91 Toyota Corolla GTS / 85-89 MR2

HKS Valve Springs — 85-91 Toyota Corolla GTS / 85-89 MR2 Upgrade your engine's valvetrain with genuine HKS valve springs engineered for the 1985–1991 Toyota Corolla GTS and 1985–1989 MR2. Designed to deliver consistent valve control at higher RPMs, these springs provide improved durability and performance for street and track use. Key Features Direct fit: OEM-compatible for Corolla GTS (85–91) and MR2 (85–89) — no machining required. Improved spring rate: Reduces valve float and maintains lift at elevated engine speeds. High-quality construction: Precision-wound alloy steel for increased fatigue resistance and long service life. Balanced performance: Ideal for mildly to moderately modified engines — preserves drivability while supporting higher RPM power. Benefits Reliable valve control under aggressive cam profiles and higher RPM operation Reduced risk of valve float and potential engine damage Consistent performance over extended use thanks to superior material and manufacturing standards Package includes: Complete set of valve springs for one engine (quantity as required for installation). Professional installation and valve clearance check recommended. Trust HKS engineering to enhance your Toyota's responsiveness and high-RPM stability — the smart upgrade for enthusiasts seeking proven valvetrain performance.