Adjustable 3.940" - 4.060" Tapered Piston Ring Compressor

This is a great piston ring compressor. It feels solid and has plenty of adjustability even over the advertised 4.060". This was a great buy at a good price and Made in the USA.

Idk why people have even a single issue with this. Definitely the best adjustable ring compressor I've used.

This seems like it would be a great tool but the description is wrong in some places. States 3.09”-4.05” in some places and 3.9”-4.05... I don’t have jugs for pistons so this does not work for my application. In hindsight the correct sizing of 3.9-4.05” males much more sense, it can’t go down to 3.09” as it would just be squeezing ovals and that’s a terrible idea.Please fix your descriptions to match the correct title sizing!

Item was as described and works as it should

Junk - do not buy. Could not compress down to the size stated. Had to be cut to size. Anodized surface flaked off during use so only two pistons could be installed. After the coating came off the rings dig into the sleeve.Bought a model from Summit Racing and the installation was a breeze.

Great works fine

Used this to assemble a .020 over Cummins 5.9. It worked beautifully. It worked better than expected. Not a single ring tried to hang up on the block like I’ve experienced with other products. Well made and will purchase their other products in the future.

Very much simplified ring installation exceeded my experience with all other compressors, putting them to shame why I haven't Ben using for years 😕.