Upgraded rear control arm boosts traction, stability, and launch control. Louver Or you can open up

Or you can open up the hole ever so slightly and fit the nut/washer included and accommodate it

which we recommend not setting track side

Acting like a liquid grease

Mercedes Mobil/Shell ATF 134

Ford Mercon SP XT6QSP

Upgraded rear control arm boosts traction, stability, and launch control. Louver Or you can open uphis upper rear control arm replaces the factory stamped upper control arm reducing wheel hop and increasing traction. The S197 Mustang chassis uses a 3 link rear suspension system with a panhard bar to control the rear end under the vehicle. Under hard loads the factory pieces tend to flex and rubber bushings deflect leading to poor traction and erratic handling. Replacing the factory pieces with stronger well designed items eliminates this flex