Checkered Flag Performance 3.780 Tapered Piston Ring Compressor

Good investment. Saves so much time.

Best tool in my box...definitely worth the money!

Very well made, had to return, needed the 4 inch size.

A awesome tool and well worth the money if your rebuilding a 4.8l or 5.3l ls engine.

Made installing the pistons in my 5.3 lm7 a cake walk. The top starts off wide and when you push the piston down it gradually closes the ring gap to fit in the bore. Yes Ill probably only use this 2 or 3 times MAYBE, but it is worth the 20 bucks to compress the rings down to fit easliy

These are inexpensive enough for the shade tree mechanic to own even if you only do 1 motor. I have used the universal ratcheting band type and have cut both hands. This tool makes installing pistons a breeze.

perfect for 5.3

The piston ring cup worked great it was a great buy. Thanks for this great product.

Worked perfectly. Easier than the old school band clamp style. No hung rings. A little atf to lube the inner surface and tapped right in.

It worked great.