ARP Ring Compressor (901-8450)

The ARP Ring Compressor (901-8450) is a specialized tool designed to facilitate the installation of piston rings in engine cylinders. Crafted from CNC-machined 6061-T6 billet aluminum, this compressor features a true radius for each bore diameter, ensuring precise and uniform compression. The tapered design improves ease of use and reduces the risk of damaging piston rings during installation. Additionally, the kit is relieved to accommodate wire O-rings on the bottom, enhancing compatibility with various piston configurations. Type 3 anodizing provides a durable, long-lasting finish, while prominent engraving of bore sizes in high-visibility numbers allows for quick identification. This high-quality tool offers superior performance and durability for professional engine builders and enthusiasts alike.

Designed for use with bore sizes around 84.5 mm, the ARP tapered ring compressor is ideal for engine rebuilds and assembly work requiring precise ring installation. Its CNC-machined aluminum construction ensures lightweight strength and resistance to wear, making it suitable for both shop and field applications. The true-radius design surpasses conventional tapered compressors by providing a more accurate fit, reducing installation errors and potential damage. Compatible with a range of piston sizes, this compressor is a reliable choice for high-performance engine builds, whether on the street or track. The kit includes the necessary components for straightforward, bolt-on installation, making it an essential tool for professional and DIY engine assembly projects.