i changed the whole lot coz mine had done 140k, and no history saying they had been done!! gd job i did!! the chains do snap, not very often tho. u dont wont to do the job twice, and if it does snap, then u will prob do alot of internal damage to the engine!!! [lightbox=../../e107_files/public/1195503743_2891_FT206736_bild0368.jpg][/lightbox] [lightbox=../../e107_files/public/1195503743_2891_FT206736_bild0370.jpg][/lightbox]