M22 "Rock Crusher" Identifiion The M22 closeratio transmission is easily identified internally from the M20 and M21 versions by the angle of the gear teeth. The M22 was only produced in a closeratio version so it will not appear on models with high rearaxle ratios ( or lower numerically) unless someone has changed it. Get Price. muncie m22 rock crusher. This is the M22 ...
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