125z parts wave Yamaha 135LC Yamaha Lagenda, Jupiter Z, Crypton Z, Vega Force Racing Boy Auto Chain Tensioner Posted on August 5, 2009 by eddy Racing Boy Auto Chain Tensioner Silver click to enlarge Functions to maintain the good tension of the roller chain. Available for sale at motomalaya.net/store Advertisements[wp_dfp_ad slot="mm_lb_03"]