Rubber spring isolators compress, crack, and settle over time, letting your Mustang's front springs shift under load, introducing squeaks, knocks, and wandering handling characteristics. Prothane's polyurethane front coil spring isolators replace those degraded rubber pieces with material that holds its shape, keeps each spring seated firmly, and restores consistent suspension behavior across the full range of 1983-1999 Fox Body, SN95, and New Edge Mustangs.
Polyurethane where it counts. Unlike rubber, polyurethane resists compression set, petroleum-based fluids, and the heat cycles encountered during spirited driving. The isolators maintain their original thickness and compliance over years of use, keeping spring rates predictable and reducing the vague, wandering feel that worn rubber allows.
Direct replacement fitment. Each isolator is shaped to the factory dimensions of the Fox Body, SN95, and New Edge front suspension, so they drop into the existing spring perches without modification. No cutting, trimming, or adapting required.
Your choice of color. Available in red or black to suit your aesthetic preference. Both colors use identical polyurethane compound, so performance is the same regardless of which you select.
Backed for life. Prothane covers these isolators with a lifetime warranty, giving you confidence in this lasting upgrade.
Product Benefits
- Polyurethane Construction: Resists compression set, heat cycles, and petroleum fluids better than OEM rubber.
- Full Coverage: This kit addresses both the front upper spring contact points and coil tails themselves for complete isolation.
- Broad Fitment: Fits 1983-1999 Fox Body, SN95, and New Edge Mustangs.
- Direct Fit: Matches factory spring perch dimensions; no modification needed.
- Color Options: Choose red or black to match your build.
- Made in the USA: Manufactured domestically to Prothane's quality standards.
- Lifetime Warranty: Covered for the life of the part.
About Prothane: Prothane has manufactured polyurethane suspension components in the United States for decades, offering enthusiasts a direct-fit alternative to OEM rubber bushings and isolators. Every Prothane kit is engineered to factory dimensions while delivering the improved durability and consistency that polyurethane provides over conventional rubber.
WARNING: California Residents: Cancer and Reproductive Harm;
www.p65warnings.ca.gov
Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Fitment | 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999 |
