Steeda Mustang w/ Brembo 'Stop The Hop' Drag Ultimate Kit (2024+)

This is Steeda's most complete wheel-hop fix for the drag-strip S650 Mustang with Brembo brakes. The factory IRS subframe sits on four soft rubber bushings with oversized bolt holes, so it shifts and twists on a hard launch. This kit locks the subframe in place, squares it to the chassis and firms up the rear suspension links so the power goes to the pavement instead of into wheel hop.

Locks the subframe down

Delrin alignment dowels fill the voids around the factory subframe bolts to stop side-to-side and fore-aft movement, and an 8-piece billet aluminum support system fills the bushing voids to stop up-and-down movement. A five-point chromoly brace then ties the subframe straight to the chassis at the front subframe mount and the lower control arm mount, using factory locations.

Takes the slop out of the rear links

Spherical bearings replace the rubbery factory lower control arm bushings so the rear doesn't toe in on launch. Billet vertical links with Delrin bushings, adjustable camber arms, adjustable toe links and Ford Performance knuckle bearings round out the package, so you can dial in alignment for the strip.

What's included

• IRS Subframe Alignment Kit (555-4438)
• IRS Subframe Bushing Support System (555-4437)
• IRS Subframe Support Braces (555-5754)
• Rear Lower Control Arm Spherical Bearings (555-4141)
• Rear Adjustable Camber Arms (555-4123)
• Adjustable Rear Toe Links (555-4120)
• Billet Vertical Links with Delrin Bushings (555-4130)
• Ford Performance Knuckle to Toe Link Bearing Assembly (M-5A460-M)

Highlights

• Eliminates wheel hop and subframe movement
• Squares the subframe to the chassis
• Better 60-foot times and launch consistency
• Adjustable camber and toe for strip tuning
• Bolt-in, no permanent modifications
• Moderate install, about 3 hours

Note: The subframe support braces don't fit convertibles.

Fitment: 2024-2026 Mustang GT, EcoBoost and Dark Horse with Brembo brakes (coupe). Steeda part #555-2129-D-7GPP.