The 40511 by Lakewood is a 90/10 strut for the '79 - '93 Ford Mustang which has been designed for drag racing. These are designed to provide maximum front to rear weight transfer and have been proven to reduce ETs. Lakewood Industries is the leader in drag race chassis and suspension technology. Using decades of track and laboratory research, Lakewood Industries has developed the most consistent and accurate drag shock on the market today. Lakewood drag shocks have been precisely tuned for superior weight transfer that remains consistent pass after pass. Additionally, the multi-stage valving provides more stability and control mid track as well as reduced brake dive at the big end. 90/10 front shocks and struts are intended for track use only and provide the maximum front to rear weight transfer. Disconnecting the front sway bar is recommended for maximum track performance.