Jeep variable pitch progressive rear springs for Jeep Wrangler JK Unlimited 4 doors.
They are built in Italy with high quality 52SiCrNi5 steel in compliance with the UNI EN 10089 standard, by a company certified by TÜV according to the UNI/ISO 9001:2015 standard.
They are longer than the originals, reinforced with a progressive effect and a soft setting.
From the menu above you can choose the extra length compared to the original trim; it is specified that they have a soft calibration optimized to give maximum off-road performance but still perfectly suitable for road use thanks to the characteristics of the variable pitch springs.
The technical sheet explains the operation of a variable pitch spring.