GKTECH F8X M2/M3/M4 Eccentric Rear Knuckle Bearing - Kinematics Kit (Order in)*NOTE* Currently is an order in product from GKTECH In Australia. Takes roughly 3 4 weeks Listing is for: 1x Pair of Knuckle bearings The GKTech F8X M2 M3 M4 Kinematics kit is a unique rear suspension geometry solution for BMW M2, M3, and M4 models. Lowering your vehicle negatively effects roll center, bump steer and the toe curve. That is where the GK Kinematics Kit is beneficial, improving the roll center and camber geometry to more track focused