The Bilstein B6 Performance 24-020527 is a rear shock absorber from the brand's B6 line, built on Bilstein's gas-pressure monotube design. Its single-tube body is meant to hold valving steady, and the monotube design eliminates aeration and fade, providing consistent valving for improved control and handling. It is listed for the 1989 Porsche 944 Base, and it is aimed at owners who want firmer, more controlled rear damping than worn factory units deliver.
For a buyer comparing it with stock or a budget damper, the case rests on control under repeated hard use and on the ability to keep the factory springs. Perceivably enhanced safety and performance without additional spring exchange (use of series spring possible) makes this a practical upgrade for a street or occasional-track 944 that does not need a coilover conversion. Search terms that fit this part include Porsche 944 rear monotube shock, B6 gas-pressure rear damper, 944 rear shock upgrade without spring change, and Bilstein 24-020527 rear shock.
Fitment is the first thing to verify. The lower mount is a 14 mm eyelet, as the rear mounting points diameter is 14mm at the bottom of the strut, and the unit installs at the rear axle. Published application lists disagree on which 944 model years and trims take this shock, and on whether it is sold singly or as a pair, so confirm both with the manufacturer before ordering. Use the manufacturer's installation documentation for the correct removal and reinstallation sequence on your car.
