Tapered Piston Ring Compressor Fits 4.000" Bore

The absolute best and easiest way to install pistons into the cylinder bore is with one of our Tapered Ring Compressors. These tools gently squeeze the rings and funnel the piston into the bore without ring damage or breakage.

• Extra tall aluminium 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