 Zeta Engine Plugs Yamaha TTR50E YZ-F - RevZillaZeta Engine Plugs Yamaha TTR50E YZ-FItem: P363915 SKU:Zeta Engine Plugs Yamaha TTR50E YZ250F YZ400F YZ426F YZ450FProduct Style Blue RevZilla Item 1190585 MFR. Product ZE89-1412 AvailabilityIn Stock: Ships within 24 hours 