Cam Chain - Daido 219FTss x 106 with rivet link. Pitch .3061" (7.774mm.) Fits: TX/XS650's 1974-84 (36 tooth cam). The latest high strength cam chain from D.I.D. for late XS650's. Made in Japan. Installation Note: Cam Chain IS absolutely correct original brand/size/length/type Original install will be Very tight as chain is pressure injected with grease at factory and head gasket is not yet compressed. Install with tensioner assembly out and it may be necessary to pry chain over last half tooth of cam sprocket to get the chain in place so joiner link can be installed. Chain will loosen once head is torqued and engine is run a short time.