Motorcycle Timing Chain Tensioner for Benelli TNT250 TNT 250 25 TRK251 Leoncino 250 Fit For Benelli TNT250 TNT25 TNT 250 25 TRK251 Leoncion 250 , engine timing chamber layout ,fits daily street motorcycle riding Direct bolt on replacement ,aligns mounting hole positions ,needs no engine casing or extra Holds consistent tension for timing chain ,reduces chain slapping noise ,keeps camshaft timing during engine operation Solid internal core with compact outer housing ,adopts wear sliding surface ,slows component wear over long mileage Produced with standard dimension data ,locks steadily after installation ,avoids timing chain looseness while riding