4.560 Tapered Ring Compressor

The ARP 4.560 Tapered Ring Compressor is a precision engine assembly tool designed for professional mechanics and serious enthusiasts working on high-performance and competition engines. This tool compresses piston rings during engine rebuild and assembly, allowing pistons to slide into bores without damaging rings or cylinder walls. Whether you're performing a complete engine overhaul or restoring a vintage or modified engine, a quality ring compressor is essential for protecting your investment and ensuring a clean, damage-free assembly.

ARP's tapered design accommodates a wide range of piston and ring combinations, suitable for various big-block and street performance applications. The tapered band geometry applies even, controlled pressure around the entire ring package, minimizing the risk of ring fracture or skewing during insertion. Constructed from durable steel with a smooth internal surface finish, this compressor resists wear from repeated use and maintains dimensional accuracy across numerous engine builds.

This ring compressor is ideal for rebuilders, machine shops, and dedicated gearheads tackling stroker builds, LS swaps, and naturally aspirated or forced-induction engines. Its design ensures that ring integrity is maintained, which directly impacts blowby, compression, and longevity. With its versatility, this tool is a valuable addition to any engine builder's toolkit.