ARP Ring Compressor

Specialty Kit for Bore Sizes up to 3.5520 Inches

Part #: 899-5520

Overview

The ARP Ring Compressor (899-5520) is a precision-engineered specialty tool designed to facilitate the installation of piston rings during engine rebuilds and assembly. Crafted by ARP, a renowned name in high-performance fasteners and engine components, this ring compressor kit is ideal for automotive enthusiasts, professional rebuilders, and engine builders seeking reliable, durable tools that ensure proper ring seating without damaging the piston or bore. Whether you're working on a small displacement engine or a larger bore, this kit provides the accuracy and quality needed for a seamless installation process.

Constructed from high-grade materials and featuring advanced CNC-machining, the ARP tapered ring compressor ensures a perfect fit for your specific bore size, helping you achieve optimal compression and engine performance. Its true-radius design offers superior performance compared to conventional tapered devices, reducing the risk of piston or ring damage and promoting a smooth, hassle-free assembly. This kit is especially beneficial for those performing high-performance builds or restoring classic engines where precision is critical.

Key Features

The ARP Ring Compressor kit boasts several technical features that set it apart from standard tools:

• Manufactured from CNC-machined 6061-T6 billet aluminum, ensuring strength, durability, and lightweight handling during installation.
• True-radius design for each bore diameter provides a precise fit, reducing installation effort and preventing piston or ring damage.
• Relieved to accommodate wire O-rings on the bottom, making it suitable for a variety of piston designs and applications.
• Type 3 anodizing finish enhances corrosion resistance and longevity, ensuring the tool maintains its appearance and performance over time.
• Large, prominently engraved bore size markings (3/4 inch high) allow for quick identification and proper selection, streamlining your workflow.
• Designed for bore sizes up to 3.5520 inches, making it versatile for many engine rebuild projects.
• Precision CNC machining ensures consistent quality and fitment, reducing installation time and effort.
• Compatible with a wide range of piston and ring sizes, making it a valuable addition to any engine builder’s toolkit.

Construction & Design

The ARP Ring Compressor (899-5520) features a robust construction utilizing CNC-machined 6061-T6 billet aluminum, a material known for its excellent strength-to-weight ratio and corrosion resistance. The true-radius design of each bore size ensures a perfect match to the piston and ring set, providing even compression and reducing the risk of ring breakage or piston damage during installation. The relieved design to accommodate wire O-rings adds versatility, allowing the tool to be used with various piston configurations.

The Type 3 anodizing process not only enhances the aesthetic appeal but also significantly improves the tool’s durability against wear and corrosion, ensuring it remains a reliable component in your engine assembly arsenal. The large engraved markings facilitate quick identification, saving time during assembly and reducing the chance of selecting the wrong size.

Performance & Benefits

Using the ARP Ring Compressor ensures a smooth, controlled installation of piston rings, which is critical for achieving optimal engine compression and performance. Its precise fitment minimizes the risk of damaging delicate piston rings or pistons, especially important in high-performance or precision rebuilds. The lightweight yet sturdy design allows for easy handling and maneuverability, making the installation process more efficient and less strenuous.

Installation & Fitment

The ARP Ring Compressor kit is designed for straightforward, bolt-on installation. It requires no special tools or modifications, fitting directly onto pistons of compatible bore sizes. The true-radius design ensures a snug, even fit, reducing the effort needed to compress rings into the cylinder bore. This tool is suitable for use in both professional machine shops and home garages, providing reliable performance across various engine rebuild projects. No cutting, drilling, or tuning is necessary, making it a user-friendly choice for engine builders of all skill levels.

• Simply select the appropriate bore size, position the compressor over the piston rings, and gently tap the piston into the cylinder.
• The precise fitment helps ensure proper ring seating and compression sealing.

What's Included

• Complete ring compressor kit with tapered design for bore sizes up to 3.5520 inches
• High-quality CNC-machined 6061-T6 billet aluminum components
• Engraved bore size markings for easy identification
• Durable Type 3 anodized finish for long-lasting performance

Ideal For

• Engine rebuilders and restorers
• High-performance engine builders
• Professional machine shops
• DIY enthusiasts working on piston ring installation

Emissions Note

This product is a specialty tool designed solely for engine assembly and repair. It does not impact emissions or legal compliance and is intended for use in off-road, racing, or non-legal applications only.