RFX Pro Engine Timing Plug Set Yamaha YZF450 06-09 WRF250/450 07-08 Rider Body Protection and the new moisture-wicking

and the new moisture-wicking

EX300 21-23

Two finger gripping ribs

CRF450R 07-20

RFX Pro Engine Timing Plug Set Yamaha YZF450 06-09 WRF250/450 07-08 Rider Body Protection and the new moisture-wickingRFX Pro Engine Timing Plug Set (Blue) Yamaha YZF450 06 09 WRF250 450 07 08 RFX Pro Series Engine Timing Plugs are manufactured from 7075 T6 aluminium for increased dimensional stability under high heat and pressure conditions. CNC machining for tighter manufacturing tolerances helps these plugs stay in place over standard plastic plugs which are prone to failing. RFX Engine plugs also feature handy 8mm and 6mm hex key heads for easier installation.