Tapered Ring Compressor POW104040

4.040" Bore

POW104040

W104040

The absolute best and easiest way to install pistons into the cylinder bore is with a Tapered Ring Compressor. These tools gently squeeze the rings and funnel the piston into the bore without ring damage or breakage. Features: Extra tall aluminum ring compressors are hard anodized for long life Designed to work on blocks with studs, they also feature a handy finger registration groove Available in all popular sizes