C/O Kit Adapter 2.5 to 5

The HOWE C/O Kit Adapter 2.5 to 5 (Part No. 30203) is a coil-over adapter designed to convert 2.5-inch coil-over suspension systems to accommodate 5-inch spring applications. This aluminum adapter enables competitors and racers to integrate modern coil-over technology with traditional 5-inch spring packages, making it an essential component for suspension system customization and upgrade work. The adapter carries IMCA approval, ensuring compliance with sanctioning body specifications for eligible racing classes.

Manufactured from aluminum with a black powder coat finish, the adapter combines lightweight construction with durability and corrosion resistance. The 5.6 x 1.65 x 6.5-inch dimensions accommodate standard mounting configurations, while the 0.66-pound weight per unit keeps overall suspension assembly weight minimal—critical for vehicles where rotational mass directly impacts handling and acceleration. The powder coat finish protects against rust and weathering, maintaining structural integrity through repeated track sessions and storage periods.

This adapter is designed for racers and suspension technicians working with IMCA-sanctioned vehicles, street stock builds, and performance applications where coil-over-to-spring conversion flexibility is required. Whether upgrading an existing suspension system or retrofitting a vehicle to meet specific class regulations, the C/O Kit Adapter 2.5 to 5 provides a verified solution that maintains compliance while enabling component interchangeability. Sold individually, though many installations require matching pairs for front and rear suspension geometry.