Rogue Engineering’s Articulating Rear Spring Perches (often referred to as weight jacks) are CNC machined from 7075-T7 aluminum and zinc plated steel. These are an absolute necessity for race cars so that they can be properly corner balanced and chassis tuned via ride height adjustments.
Simple adjustments are made using a 14mm wrench to thread the perch up or down as needed.
Two different versions are available. E36 versions are held in place on the steel upper control arms by way of a threaded on lower piece. The E46 versions have a welded steel plate that rests on top of the E46’s cast aluminum upper arms.
Sold as a Pair.
Optional upper spring locating cones are highly recommended to keep your springs centered during droop travel.
Applications: All E36s (excluding ti), all E85/86 Z4 and all E46 models.