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Old 08-07-2008, 06:03 AM
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wingracer
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Is it an MT-12 or an MR-12?

If you don't know, pull the motor apart and look at the piston. If the bottom edge of the piston skirt is even all the way around you have an MT-12. If the side of the skirt facing the crankshaft is cut out a bit then you have an MR-12.
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