ARP 900-3600 Billet Aluminum Piston Ring Compressor Tool

The ARP 900-3600 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 that matches the specific bore diameter for superior piston installation.

Key Features:

• CNC-machined from 6061-T6 billet aluminum for strength and durability
• True radius design provides even compression around entire ring pack
• Relief machined into bottom edge accommodates wire O-rings
• Type 3 hard anodized finish resists wear and corrosion
• Bore size prominently engraved in 3/4-inch high numbers for easy identification
• Superior to conventional tapered ring compressors

Unlike traditional tapered ring compressors that can cock pistons during installation, ARP's true radius design ensures uniform compression of all rings simultaneously. This reduces the risk of ring breakage and makes piston installation smoother and faster. The Type 3 anodized finish provides a hard, slick surface that will withstand years of professional use. ARP offers these compressors in standard SAE sizes from 3.552 to 4.750 inches and metric sizes from 75mm to 95.5mm, making them suitable for virtually any automotive, marine, or powersports engine build.