ARP 899-9000 Billet Aluminum Piston Ring Compressor

The ARP 899-9000 is a precision-engineered piston ring compressor designed for professional engine builders and serious enthusiasts. CNC-machined from 6061-T6 billet aluminum tube material, this tool features a true radius design specifically engineered for accurate bore diameter matching, providing superior performance compared to conventional tapered compressors.

Key Features:

• CNC-machined from 6061-T6 billet aluminum for strength and precision
• True radius design ensures proper fit for specific bore diameters
• Type 3 hard anodized finish for long-lasting durability and wear resistance
• Bottom relief designed to accommodate wire O-rings
• Bore size engraved in large 3/4-inch numbers for easy identification
• Available in SAE sizes from 3.552 to 4.750 inches and metric sizes from 75mm to 95.5mm

The true radius construction provides even compression around the entire piston ring circumference, reducing the risk of ring damage during installation and ensuring proper piston insertion. This professional-grade tool is widely recognized by engine builders as the superior choice for precision engine assembly work.