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Question answered Over 7 months ago
Answer: As you probably already know, RS Taichi is a Japanese company. Many Japanese athletes are more slender than most Americans and Canadians.
To fit your 43" chest, we would have to suggest the Japanese size 3X-Large/European size 58, and fits a man up to 198 pounds. The Japanese size 3X-Large/European size 58 fits a man 185cm to 190cm tall.
The Japanese size 2X-Large/European size 56 fits a 42" chest, and a man 180cm to 185cm tall, up to 187.4 pounds.
Each screen for every race suit includes sizing charts specific to each make. We carry several other suits to fit your height, weight, and measurements.