ARP Ring Compressor (901-8725)

The ARP Ring Compressor (901-8725) is a specialized tool designed to facilitate the installation of piston rings during engine assembly. Crafted from CNC-machined 6061-T6 billet aluminum, this compressor features a true radius for each bore diameter, ensuring precise and uniform compression. Its relieved design accommodates wire O-rings on the bottom, enhancing compatibility with various piston configurations. The Type 3 anodizing provides a durable, long-lasting finish, while the prominent engraving of bore sizes in high-visibility numbers allows for quick identification. This high-quality tool offers superior accuracy and ease of use compared to conventional tapered ring compressors, making it an essential component for professional engine builders and enthusiasts seeking reliable performance during assembly.

Designed for use with pistons up to 87.25 mm bore sizes, the ARP tapered ring compressor is ideal for engine rebuilds and performance upgrades. Its precise CNC-machined construction ensures a perfect fit for specific bore diameters, reducing the risk of ring damage or installation errors. Suitable for various engine types, this tool is particularly useful in high-performance or racing applications where accuracy and durability are critical. The kit includes the compressor itself, with engraved bore size markings for easy selection. Compatible with a range of engine configurations, it provides a secure, straightforward installation process, making it suitable for both professional and DIY engine assembly tasks.