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Early Royal .45 copied from the OS .45 FSR This engine was Made in Taiwan by Thunder Tiger It was also sold under the brands of Magnum and Thunder Tiger
MECOA Number	Royal Number	Description
Ro10-45	aa0049	Crankcase
23-0201		Generic Prop Washer
24-0201		Generic Prop Nut
Ro25-45a		Black Allen Screw Set
Ro25-45b		Muffler Screw Set
Ro29-45a		Front and Rear Cover Gaskets

Royal Signature .46 copied from the OS .46 SF This was made by LEO in Taiwan It was also sold under many different names with a sticker on the bypass Many parts will also fit the OS .46 SF All the parts for the MECOA Tomcat .46 will fit this engine Click here for complete list