ARP Ring Compressor (901-8350)

The ARP Ring Compressor (901-8350) is a specialized tool designed to facilitate the installation of piston rings in high-performance engine builds. Crafted from CNC-machined 6061-T6 billet aluminum, this compressor features a true radius for each bore diameter, ensuring precise and uniform ring seating. The relieved design accommodates wire O-rings on the bottom, enhancing compatibility with various piston configurations. With Type 3 anodizing, the tool offers exceptional durability and corrosion resistance, while prominently engraved bore sizes in high-visibility numbers allow for quick identification during assembly. This precision-engineered compressor provides a reliable, lightweight solution for professional engine builders and enthusiasts seeking consistent, damage-free ring installation.

Compatible with bore sizes around 83.5 mm, this ring compressor is ideal for use in high-performance, racing, or rebuild applications where precision and durability are critical. It is designed to fit pistons with tapered rings and is suitable for use with a variety of engine types requiring accurate ring compression. The tool is a direct replacement for conventional tapered compressors, offering improved true-radius contact that reduces the risk of ring damage or deformation. Suitable for use in both street and track engines, this compressor simplifies installation and ensures optimal ring seating, contributing to improved engine performance and longevity.