ARP Ring Compressor (901-8100)

The ARP Ring Compressor (901-8100) is a specialized tool designed to facilitate the installation of piston rings in engine rebuilds. Crafted from CNC-machined 6061-T6 billet aluminum, this compressor features a true radius for each bore diameter, ensuring precise and uniform ring seating. Its relieved design accommodates wire O-rings on the bottom, enhancing compatibility with various piston configurations. The Type 3 anodizing process provides increased durability and corrosion resistance, while the prominently engraved bore size markings allow for quick identification during assembly. This high-quality tool offers superior performance compared to conventional tapered compressors, promoting accurate installation and reducing the risk of ring damage.

Designed for use with engines requiring bore sizes around 81.0 mm, the ARP tapered ring compressor is ideal for professional engine builders and enthusiasts performing rebuilds or upgrades. Its precise fitment ensures smooth installation in a variety of applications, including high-performance and racing engines. The kit is suitable for use with pistons that feature wire O-rings and requires no additional modifications for compatibility. This tool serves as a reliable, durable, and easy-to-use solution for achieving optimal piston ring seating, ultimately contributing to improved engine performance and longevity.