Koni STR.T / Eibach Pro-Kit Complete Lowering Suspension Kit

The Koni STR.T / Eibach Pro-Kit Complete Lowering Suspension Kit is a factory-matched performance suspension solution that pairs Koni's legendary STR.T dampers with Eibach's precision-engineered Pro-Kit progressive-rate lowering springs. Purpose-built for driving enthusiasts who want a meaningful upgrade over stock without sacrificing everyday comfort, this complete kit delivers improved handling dynamics, a lowered stance, and a more connected driving experience straight out of the box.

A Collaboration Between Two Industry Leaders:

Koni has been a trusted name in performance damping for decades, with the STR.T series bringing that engineering heritage to an accessible price point. Paired with Eibach's Pro-Kit progressive-rate lowering springs — one of the most respected spring lines in the aftermarket — each kit is vehicle-specifically calibrated as a matched system, eliminating the guesswork of mixing and matching components from separate sources.

What's Included:

• Four Koni STR.T performance dampers (front struts and rear shocks)
• Four Eibach Pro-Kit progressive-rate lowering springs
• Vehicle-specific fitment, engineered and calibrated as a complete matched system

Koni STR.T Damper Technology:

• Performance dampers built to Koni's renowned quality and engineering standards
• Fixed damping rate precisely calibrated to complement lowered spring applications
• Twin-tube design provides controlled compression and rebound characteristics
• Reduces body pitch, roll, and sway for improved stability during cornering and braking
• Bolt-in design installs at factory mounting locations — no cutting or drilling required

Eibach Pro-Kit Spring Engineering:

• Progressive-rate design delivers comfort during normal driving with increased firmness under hard cornering
• Lowers the vehicle's center of gravity for enhanced handling and reduced body roll
• Reduces acceleration squat and brake dive for a more planted, confident feel
• Manufactured from high-tensile spring steel with a durable corrosion-resistant finish

Key Benefits:

• Lowered ride height for an aggressive, purposeful stance
• Improved steering response, road feel, and overall handling confidence
• Reduced body roll, pitch, and unwanted suspension movement
• Daily-driver friendly — meaningful performance gains without a punishing ride quality
• Factory-matched spring and damper rates for optimal out-of-the-box performance
• 100% street legal — fully compliant for daily road use
• Bolt-on installation using OEM mounting points
• Backed by Koni's limited lifetime warranty on dampers

The Koni STR.T / Eibach Pro-Kit Complete Lowering Suspension Kit is the ideal choice for performance-minded drivers seeking a complete, engineered suspension upgrade that improves both handling and appearance. The combination of Koni's damping expertise and Eibach's spring technology creates a cohesive, vehicle-tuned system that significantly outperforms stock components while remaining fully street legal and suitable for daily use. Select the correct variant for your specific vehicle to ensure a proper fit.