2012-2018 BMW 3-Series RWD (F30/F31/F34) Coilover Shock Absorbers w/ 32-Way Damping Force Adjustment

Fitment: 2012 2013 2014 2015 2016 2017 2018 BMW 3-Series RWD (F30/F31/F34) Specifications: Shock Type: Mono-TubeSpring Preload: 7-10 mmAdjustable Height: Yes, lowering 2" to 4"Surface Materials: Aluminum, Steel32-Way Damping Force AdjustmentSpring Rate Front: 6 kg/mm (336 lbs/in)Spring Rate Rear:10 kg/mm (560 lbs/in)Spring length Front: 200mmSpring length Rear: 225mmCoilover overall length Front: 508mm-605mmCoilover overall length Rear: 562mm-640mm Features: 1. Twin-tube structure allows sufficient stroke within the shock absorber.2. High-tensile performance spring—STRESS TESTED OVER 600,000 times, with spring distortion less than 0.04%. Plus, the special surface treatment improves durability and performance.3. Height Adjustment tools included.4. Rubber top mounts help to deliver a smooth and forgiving ride for city use at any speed and rubber joints assist in absorbing hard impacts.5. Most pieces in our coilover systems, including mounts, collars, and spring perches, are designed from