Bilstein B4 OE Replacement Rear Strut Assembly Subaru Forester 2009-2013 | 19-278421

The Bilstein B4 Series OE Replacement Rear Strut Assembly is a direct-fit, factory-quality upgrade engineered specifically for the 2009-2013 Subaru Forester. Designed to restore your Forester's original ride comfort, handling precision, and safety characteristics, this twintube strut assembly delivers the legendary Bilstein quality that OEM-level performance demands. Whether you're replacing worn-out factory struts or proactively maintaining your Subaru's suspension, the B4 Series is the gold standard in OE replacement shocks and struts.

Key Features & Benefits

• Twintube Shock Absorber Technology — Bilstein's proven twintube design provides a smooth, controlled ride by using two concentric cylinders for consistent damping performance under varying road conditions.
• Vehicle-Specific Valving — Each B4 strut is valved specifically for your Forester's weight, suspension geometry, and factory ride characteristics, delivering a ride quality that mirrors or exceeds original equipment.
• High-Pressure Monotube-Quality Construction — Built with premium materials and tight manufacturing tolerances, the B4 Series resists fade, aeration, and premature wear for long-lasting reliability.
• Complete Strut Assembly — Arrives as a fully assembled unit — no spring compressor required — saving time and reducing installation complexity for professional technicians and DIY enthusiasts alike.
• Corrosion-Resistant Finish — External components feature a durable protective coating to withstand road salt, moisture, and harsh environmental conditions common in all-weather driving.
• Restores OEM Handling & Safety — Worn struts compromise braking distances and steering response; the B4 Series restores your Subaru's factory-designed safety margins and stability.
• Made in Germany — Manufactured to Bilstein's exacting European quality standards, the same standards trusted by major OEM automakers worldwide.

What's Included

• 1x Bilstein B4 Series Rear Strut Assembly (single unit — order qty 2 for complete rear axle replacement)