4 inch Bore Summit Racing Piston Ring Compressor

4 inch Bore Summit Racing Piston Ring Compressor | Summit Racing 904000

Summit Racing SME-904000 Ring Compressor Aluminum Black Anodized 4.000 in. Bore Each – Make piston installation painless with these Summit non-adjustable piston ring compressors. The aluminum ring compressors are bore-specific and have a tapered inner diameter. Just install the rings on the piston and slide the piston and rod assembly down into the bore. The taper gradually compresses the rings right up until they go into the bore. They are available to fit many bore sizes and have a black anodized finish.