Racing Dynamics Catalog of BMW, MINI & Porsche Performance Parts. Racing Dynamics is the home of special suspension parts including sway bar kits and strut braces for BMW, MINI and Porsche automobiles for over 28 years.. BMW Tuning, BMW suspension, BMW exhausts, Porsche exhaust, BMW Performance, Racing Dynamics, racdyn, BMW headers, BMW Performance, BMW Sport, BMW Accessories, BMW Wheels, BMW Aerodynamics, Racing Dynamic, MINI Performance, sport pedals, race shift knobs, chips, M235i, M3, M4, M5, 325i, 540i, 545i, 550i, 640i, 650i, M6, Z3, Z4, e36, e46, e90, e9X, e92, e93, f30, N54, N55, N52, S55, BMW Cold Air Intake, M5 air intake, BMW air intake, BMW charge pipes, Porsche strut brace, Mini strut brace, BMW strut brace, BMW rear strut brace, BMW carbon fiber engine covers, BMW short shifter, BMW 3 series adjustable sway bar kit