SuperPro 1965 Triumph TR4A Base Rear Spring Insulator (+5mm Thickness)

Starting with a 5.5mm thickness, these SuperPro rear spring insulators are designed to add a bit more cushion and support to your Triumph TR4A or TR6. They're made from SuperPro's own engineering-grade polyurethane, which is a step up from standard rubber bushings. This material is known for being unaffected by extreme temperatures, oils, and coolant, and it generally lasts longer than rubber, especially in tough conditions. By using these, you can expect your vehicle's handling and performance to see an improvement.

SuperPro has been making suspension bushings for over 40 years, and they engineer and manufacture these in Australia. Their polyurethane formula is a key part of what makes these bushings a solid alternative to rubber. They help maintain proper steering geometry and can lead to better tire wear and overall performance. If you're looking to refresh the suspension on your classic Triumph, these insulators are a well-built option that can make a noticeable difference.