85mm Tapered Ring Compressor

The ARP 85mm Tapered Ring Compressor is a vital tool for engine builders, machinists, and DIY enthusiasts working specifically with 85.00 mm bore engines. This precision instrument is designed to compress piston rings during engine assembly, ensuring correct seating and protecting ring ends from damage. Proper ring compression is crucial for preventing installation errors and enhancing engine longevity.

Constructed from black anodized aluminum, the 85mm tapered ring compressor offers reliable performance while resisting corrosion and wear. Its tapered design facilitates smooth and controlled compression of piston rings, which is essential for achieving even pressure distribution. ARP's precision engineering allows the compressor to slide easily over the piston and into the cylinder bore, accommodating the 85.00 mm bore specification with tight tolerances.

This compressor is particularly beneficial for builders working on small-block and mid-displacement engines, commonly found in performance, marine, and light industrial applications. Weighing just 0.69 lbs and measuring 5.5 x 2.5 x 5.5 inches, it is compact enough to fit in any toolbox and portable for field engine work. Whether performing a full rebuild or replacing a single piston, the ARP 85mm tapered ring compressor is an essential tool for ensuring a successful engine assembly.