AST Suspension 5100 Series Coilovers (Excludes Front/Rear Top Mounts) (Non Inverted) - 2005-2011 BMW 3 Series 330i (E9X) IST 2007 Mazda Roadster Base

2007 Mazda Roadster Base

2002 Hyundai Elantra

1994 Honda Civic Si SiR FWD (EG6)

Optional DLC (diamond like carbon) coated shafts

1991 Honda Accord

AST Suspension 5100 Series Coilovers (Excludes Front/Rear Top Mounts) (Non Inverted) - 2005-2011 BMW 3 Series 330i (E9X) IST 2007 Mazda Roadster BaseThe 5100 Series shock absorbers for the 2005 2011 BMW 3 Series 330i (E9X) utilize non inverted high performance monotube technology. In the past, these were known as the 4100 series. Monotube design shocks absorbers give your car a better performance than the standard twin tube design, the gas pressure is separated by a floating piston, and eliminates cavitation and airation within the oil chamber. The 5100 Series shocks allow rebound adjustment with