Our recommended coilovers for the BMW Z4 E85 and E86, including the Z4 M, from Eibach springs to AST and MOTON 3-way kits, with prices and which Z4 each one fits.

Our recommended coilovers for the BMW Z4 E85 and E86, including the Z4 M, from Eibach springs to AST and MOTON 3-way kits, with prices and which Z4 each one fits.

The AST 5200 in depth: separate rebound and compression on a remote reservoir, how it is built, AST’s starting settings, which cars it covers, and how it compares with 5300 and MOTON.

12 BC Racing coilover kits for Dodge across nine models. The Viper 1996 to 2008 lists twice by front strut fork size: 85.5mm and 97.5mm are separate kits. BR covers everything; Avenger Sedan and Caliber Srt-4 also on RM.

The MOTON 1-Way Clubracer in depth: 15 clicks of rebound, no reservoir, a coilover at every corner, how it compares with the AST 5100 Clubracing, and the options worth knowing.

Our recommended coilovers for the BMW E90/E92 3 Series and M3, from lowering springs to 3-way race kits, with prices, spring rates and which version of the car each kit fits.