OE LSA Flex Drive Adjustable Triple IdlerLSX Concepts OE LSA Adjustable Triple Idler, which provides additional belt wrap on the upper pulley, has three positions for the lower idler pulley, which provides a 1 2 inch belt length adjustment for each position for a total of 1. 5 inches of adjustment. Designed to be used with our "OE LSA Flex Drive Tensioner Bracket" which has eight indexable positions for the tensioner, which provide an additional 1. 5 inches of adjustment. This system is