Burris Briggs OHV Ring Sets - The Burris low tension ring sets for the Briggs Animal* & World Formula* include a compression ring, scraper ring and oil ring with expander. These ring sets are manufactured to the highest standards and offer all of the features that the top engine builders look for. *All Burris pistons and rings are aftermarket replacement parts and not manufactured by the OEM. Reference to a particular engine type or manufacturer is intended to be descriptive and for identification purposes only.