Steeda Stop the Hop Starter Kit Rear IRS Suspension (2015-2023 Mustang / 2024 Mustang) 555-4455

The Steeda Stop the Hop Kit gives the S550 Mustang owner the fundamental foundation for ultimate traction and suspension compliance. The complete starter kit provides the basic IRS upgrades to improve traction and stop wheel hop . The factory S550 Mustang IRS subframe, (often inaccurately referred to as a cradle), mounts to the S550 chassis with 4 mounting locations utilizing 4 soft rubber bushings with plenty of voids, even in the bolt holes. The kit we put together addresses these issues and more.

Kit Includes:

• 555-5754 - IRS Subframe Support Braces

• 555-4437 - IRS Subframe Bushing Support System

• 555-4438 - IRS Subframe Alignment Kit

First is our Alignment dowel kit. This fills the factory bolt hole voids with CNC machined delrin inserts that will square up the rear subframe to the chassis. By filling these voids we are also limiting the side to side and front to back movement of the subframe that is present under hard acceleration and braking.

Second is our tried and true IRS Subframe Bushing Support System. This 8 piece kit was a first of it's kind in the performance aftermarket and so innovative and popular we patented it's design! Made in house from billet 6061 aluminum and featuring stainless steel hardware, this kit fills all the factory voids in the IRS subframe mounting locations. It's job is to prevent up and down movements of the subframe.

The 3rd and final piece to this kit is the strongest support brace for the S550 IRS on the market!! Made in house from chrome moly steel, this brace is designed to support the factory subframe by directly tying it into the chassis at key mounting locations. Using factory mounting locations on the factory frame, this 5 point brace supports the front factory mount and the lower control arm mount as well. A simple bolt in design this brace ties the subframe to the chassis in the best possible way.

Beefcake Racing is an Authorized Dealer for Steeda, call 1-855-827-7223, 9am-10pm EST