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Whiteline is the Australian leader in handling-focused suspension hardware — anti-sway bars, control arm bushings, alignment correction kits, and limited-slip differentials. Engineered for Subaru WRX/STI, Mitsubishi EVO, and modern performance platforms.
Enhance the handling and responsiveness of your 2015-2024 Ford Mustang S550 with the Whiteline Crossmember Mount Insert Kit (WHLKDT943). This kit is designed to combat unwanted rear crossmember movement, providing a more solid and predictable feel during spirited driving and track use. It's an ideal upgrade for Mustang GT, EcoBoost, and Shelby models seeking improved performance without a harsh ride.
The rear crossmember on performance vehicles like the Mustang can experience significant flex, especially when equipped with high-performance tires or subjected to hard cornering. This movement can lead to a less precise feel and reduced confidence. The Whiteline KDT943 insert kit fills the voids within the OEM bushing, effectively stiffening the mount without completely replacing it. This results in a dramatic reduction in unwanted chassis flex, allowing your suspension to work more effectively and providing a more direct connection to the road. Experience a noticeable improvement in your Mustang's handling dynamics. Upgrade your S550 with this performance-focused kit from GGCRACING.
| Brand | Whiteline |
|---|---|
| Manufacturer part number | KDT943 |
| GGC SKU | WHLKDT943 |
| UPC / GTIN | 9319924404353 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 8 × 6 × 3 in |
|---|---|
| Shipping weight | 0.9 lb |
| Year | Make | Model | Trim |
|---|---|---|---|
| 2015 | Ford | Mustang | GT 50 Years Limited Edition |
| 2015-2017 | Ford | Mustang | V6 |
| 2015-2020 | Ford | Mustang | Shelby GT350, Shelby GT350R |
| 2015-2026 | Ford | Mustang | GT Premium, EcoBoost, EcoBoost Premium, GT |
| 2019-2020 | Ford | Mustang | Bullitt |
| 2020-2022 | Ford | Mustang | Shelby GT500 |
| 2021-2023 | Ford | Mustang | Mach 1 |
| 2024-2025 | Ford | Mustang | Dark Horse Premium |
| 2024-2026 | Ford | Mustang | Dark Horse |
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