KYB SR4084 Strut-Plus Complete Strut Assembly with Mount and Spring

The KYB Strut-Plus SR4084 is a complete, pre-assembled corner unit that combines a premium KYB Excel-G gas strut, high-carbon steel coil spring, upper mount assembly, bearing plate, isolators, boot, and all necessary hardware in one ready-to-install package. Engineered as an original equipment supplier, KYB designs each Strut-Plus assembly with vehicle-specific damping valves that are hand-assembled in-house to restore your vehicle's original ride height, handling characteristics, and control capabilities.

Key Features:

• Twin-tube gas-charged KYB Excel-G strut with application-specific damping valves calibrated to compensate for worn suspensions
• Heat-treated, high-carbon steel coil spring developed considering specific corner weights and vehicle attributes to restore proper ride height within OE specifications
• Thicker strut body outer shell with reinforced brackets to minimize flex and metal fatigue while maintaining correct wheel alignment
• Coil spring design matches OE direction of wind with optimized spring seat pitch to reduce wear and stress on surrounding components
• Includes upper spring seat, lower spring isolator, bearing plate, boot kit, and all mounting hardware for complete installation
• No spring compressor required—completely pre-assembled for faster, easier installation
• Compressed length: 12.16 inches; Extended length: 17.28 inches; Stroke length: 5.12 inches
• Front left (driver side) position-specific design with components engineered as the vehicle manufacturer intended

Why Choose KYB Strut-Plus:

A strut assembly is a safety-critical component that handles vehicle weight, determines ride height, serves as the steering pivot, and controls vehicle stability. Worn struts can negatively impact electronic crash avoidance systems, anti-lock brakes, and electronic stability control. The KYB Strut-Plus restores these critical safety functions while improving steering response, reducing stopping distance, and maintaining proper tire wear. KYB's corner-specific engineering ensures optimal performance—unlike generic "one-size-fits-all" assemblies, each part number is tailored to specific vehicle applications.

The Strut-Plus assembly saves installation time and eliminates the need for dangerous spring compression, while ensuring all components work together to meet OE specifications. With KYB's reputation as a leading original equipment supplier, you can trust that this assembly will restore your vehicle's designed performance and handling capabilities.