2015-2021 Subaru WRX/STI Pro-Kit Performance Springs Front: 0.8/Rear: 0.8 by Eibach (7728.140) Eibach

Pro-Kit lowers your Subaru’s center of gravity, reducing squat during acceleration, body roll in corners and excessive nose-dive under braking. When combined with Plus-1 or Plus-2 wheels and tires, the Eibach Pro-Kit is the finishing touch to a winning recipe for performance. Pro-Kit also reduces excessive fender-well clearance, making your car look just as hot as it performs.Every Eibach Pro-Kit is designed and tested by our suspension engineers and performance driving professionals, to deliver aggressive good looks and high performance handling, without ever compromising safety or ride quality. By using our proprietary, progressive spring design, Pro-Kit provides the ultimate balance to take your passion for driving to a whole new level.FRONT:OE rate: 58 N/mm (331 lbs/in)PRO-KIT progressive rate: 28 – 64 N/mm (160 – 366 lbs/in)Bump-stop: OEDamper: OETubing: YesOE wheel center to fender: 361 mm (14.2 in)PRO-KIT wheel center to fender: 340 mm (13.4 in)PRO-KIT can be aligned to OE Specs: Yes Front Alignment:OE Camber = -0.8 deg (+/-0.5 deg)OE Caster = 6.5 deg (+/-0.8 deg)OE Toe = 0.0 deg (+/-0.16 deg)PRO-KIT Camber = -1.0 degPRO-KIT Caster = 6.8 degPRO-KIT Toe = 0.0 degApproximate installation time: 1.5 hrsREAR:OE rate: 60 N/mm (343 lbs/in)PRO-KIT progressive rate: 58 – 70 N/mm (331 – 400 lbs/in)Damper: OEBump-stop: OETubing: YesOE wheel center to fender: 355 mm (14.0 in)PRO-KIT wheel center to fender: 335 mm (13.2 in)PRO-KIT can be aligned to OE specs: Yes Note: PRO-KIT spring rates are measured as a system of the front or rear suspension. 10mm of bump-stop deflection is included in the final rate of the system. Rear Alignment:OE Camber = -1.7 (+/-0.8 deg)OE Toe = 0.24 deg. (+/-0.16 deg)PRO-KIT Camber = -1.7 degPRO-KIT Toe = 0.24 degApproximate installation time: 1.5 hrs