SuperPro KIT5107RK Polyurethane Rear Suspension Bushing Kit for Triumph Spitfire MkI-MkIII & Herald

The SuperPro KIT5107RK is a complete polyurethane rear suspension bushing kit engineered specifically for the Triumph Spitfire MkI, MkII, and MkIII (1962–1970), as well as the Triumph Herald. This kit replaces the entire rear suspension rubber bushing set with precision-molded polyurethane components designed to restore proper suspension geometry and significantly improve handling characteristics.

SuperPro is an Australian-based manufacturer that pioneered the use of polyurethane suspension bushings as a direct response to the limitations of OEM rubber. Polyurethane construction resists deterioration from oils, road contaminants, and weathering far better than rubber, ensuring longer service life and consistent performance over time.

Key Features:

• Complete rear suspension bushing kit — all bushings needed for a full rear suspension rebuild
• High-grade polyurethane construction outlasts OEM rubber bushings
• Delivers improved handling precision and more consistent suspension geometry
• No increase in vibration or ride harshness compared to standard rubber bushings
• Ideal for both everyday road driving and track day use
• Backed by SuperPro's 3-Year / 36,000-Mile Guarantee
• Tried, tested, and proven in motorsport applications

SuperPro engineers tune each bushing in a kit to work together as a system — some locations are intentionally stiffer or softer than others to achieve the best overall handling balance for the vehicle. This approach sets SuperPro apart from generic one-size-fits-all polyurethane replacements and makes the KIT5107RK a premium upgrade for any classic Spitfire restoration or performance build.