YAMAHA FZ6 FAZER 600. CRASH PROTECTORS MUSHROOMS AND BOBBINS. Yamaha FZ6 2004 -2014 and for the Fazer 600 2004 - 2014. 4 ACETAL CRASH MUSHROOMS (SPINDLES). SPINDLE MUSHROOMS ARE VERY SIMPLE TO FIT, JUST CUT THREADED BAR TO DESIRED LENGTH.