ARP Ring Compressor

Specialty Kit for Bore Sizes up to 4.4700 Inches

Part #: 900-4700

Overview

The ARP Ring Compressor (900-4700) is a precision-engineered specialty tool designed to facilitate the installation of piston rings during engine assembly. Crafted by ARP, a renowned name in high-performance fasteners and engine components, this ring compressor kit is ideal for professional engine builders, performance enthusiasts, and machinists seeking reliable, durable tools for accurate piston installation. Its specialized design ensures a smooth, hassle-free process, reducing the risk of damaging piston rings or bore surfaces.

Constructed from high-quality materials and featuring meticulous CNC machining, this kit provides consistent, precise compression for bore diameters up to 4.4700 inches. Whether you're rebuilding a high-performance engine or performing routine maintenance, the ARP ring compressor helps you achieve a perfect seal and optimal engine performance. Its thoughtful design and robust construction make it a valuable addition to any engine building arsenal.

Key Features

The ARP Ring Compressor (900-4700) boasts several advanced features that set it apart from conventional 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 superior fitment compared to traditional tapered compressors, reducing installation stress on piston rings.
• Relieved to accommodate wire O-rings on the bottom, ensuring compatibility with a variety of piston designs and sealing requirements.
• Type 3 anodizing enhances corrosion resistance and longevity, maintaining a professional finish over years of use.
• Prominently engraved bore size markings in 3/4 inch high numbers allow for quick identification and selection, streamlining the assembly process.
• Precision CNC machining ensures consistent bore diameters and smooth surface finishes, promoting ease of use and reducing installation errors.
• Designed for use with high-performance and stock pistons alike, supporting a wide range of engine rebuild projects.

Construction & Design

The ARP Ring Compressor kit is built with a focus on durability and precision. The CNC-machined 6061-T6 billet aluminum construction provides a lightweight yet robust tool that resists wear and corrosion. The true-radius design for each bore size ensures a perfect fit, minimizing the risk of ring damage or piston scoring during installation. The reliefs for wire O-rings demonstrate thoughtful engineering, accommodating various sealing configurations without compromising the compressor's integrity.

The Type 3 anodized finish not only enhances the aesthetic appeal but also extends the tool's lifespan by providing excellent corrosion resistance. The prominent engraving of bore sizes allows for quick and easy identification, saving time during assembly. Overall, the design emphasizes ease of use, longevity, and precision, making it an essential tool for high-quality engine builds.

Performance & Use

While the ARP Ring Compressor (900-4700) does not directly increase horsepower or torque, it plays a crucial role in ensuring proper piston ring installation, which is vital for optimal engine performance and longevity. Its true-radius design and high-quality materials help prevent ring damage and ensure a tight, uniform seal around the piston, supporting reliable compression and power output. This tool is especially beneficial when working with larger bore engines or custom piston setups where precise ring compression is critical.

Installation & Fitment

The ARP Ring Compressor (900-4700) is designed for straightforward, bolt-on use. It fits bore sizes up to 4.4700 inches and is compatible with a wide range of piston and engine configurations. No special tools, cutting, or modifications are required for installation. Simply select the appropriate bore size, position the compressor around the piston rings, and carefully slide the piston into the bore. Its lightweight construction and ergonomic design facilitate easy handling during assembly, making the process quicker and more efficient.

• Compatible with a variety of piston sizes up to 4.4700 inches bore diameter.
• No cutting, drilling, or special tuning needed.
• Ideal for professional engine builders and serious DIY enthusiasts.

What's Included

• Complete ring compressor kit with CNC-machined aluminum components
• Multiple bore size markings for easy identification
• All necessary hardware for assembly and use

Ideal For

• Engine rebuilds and restorations
• High-performance engine assembly
• Professional machinists and engine builders
• DIY enthusiasts seeking precision tools

Emissions Note

This product is a specialty tool and does not impact emissions or legal compliance. It is intended for use in professional or off-road applications where legal restrictions do not apply.