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Used 1973 Yamaha MX360 for sale. | Silver 1973 Yamaha MX Classic Motorcycle in Litchfield MN | 6271

Patrick Cattarin

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Used 1973 Yamaha MX360 for sale.

Used 1973 Yamaha MX Silver
Litchfield, MN

The 1973 Yamaha MX line consisting of both a 250cc and 360cc model was Yamaha's first true response to the two year earlier entries to the serious "privateer Motocross racer" market made by both Suzuki and Honda. Suzuki's TM line was the result of extensive race development by some of Europe's best riders. Yamaha caught on fast and fielded Hakan Andersson and Van Velthoven on Yamaha works bikes on the 1972 European motocross Grand Prix circuit. Hakan Andersson finished second overall in the 250cc class and Van Velthoven finished fifth overall in the 500cc class. Both the 1973 MX250 and MX360 were genuine replicas of the 1972 works machines. Yamaha was world 250cc motocross champion in 1973 with Hakan Andersson, while bikes entered by the French importer Sonauto won the national 125cc championship with Jallat riding and came second in the 500cc class, this time with Drobecq in the saddle. Yamaha had genuinely arrived on the European world circuit and in mid 1974 introduced the newer YZ models that firmly placed Yamaha as a podium contender at every motocross event. The MX360 represents a critical stepping stone in Yamaha's path to dominance in the sport. The engineers at Yamaha critically studied the winning bikes of the time in 1971 as evidenced by the 360MX's wheel base being stretched out to match the current Maico 400's dimensions and the weight distribution and ground clearance being virtually identical to the Husky 400CR. The 360MX utilized a ground breaking reed valve induction system that allowed for early intake of the fuel charge through the special windowed piston. The reed prevents the fuel from backing up into the intake tract when crankcase pressure changes from negative to positive. Consequently, monstrous ports and radical port timing were incorporated in the design without sacrificing low to medium rpm performance (something that Suzuki had not figured out with the "pipey" TM line). They also incorporated a Capacitor Discharge Ignition system that was sealed in a polyurethane resin to protect it from water, corrosion, and vibration while delivering a consistent spark intensity and duration relatively independent of engine rpm. All of this added up to a 360cc single that delivered 39 bhp at 7500 rpm while still allowing for a manageably wide power band. One other trick item was the partial decompression mechanism that was interlocked with the kick crank. The decompressor, located in the front portion of the cylinder, lessens compression, and thus reduces kick lever pressure to that of a mild 250cc, all automatically.The 360MX was a giant leap up from the original 360 enduro models that many amateur racers stripped down and added the "G.Y.T. Kits" (Genuine Yamaha Tuning) to in 1970-1972. The 360MX and the 250MX were Yamaha's first true entries in the purpose built motocross sector and as such hold a significant place in Yamaha's history. It's no wonder that these exceptionally performing beauties have gained such tremendous favor among serious vintage motocross collectors.This prime example of the 1973 MX360 will make a fine addition to any collection!
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More About this Listing: Used 1973 Yamaha MX360 for sale.
Used 1973 Yamaha MX360 for sale. is a Silver 1973 Yamaha MX Classic Motorcycle in Litchfield MN. Find other listings by searching for 1973 Yamaha MX in Hutchinson on Oodle Classifieds.