Twin Disc Marine MG-507 

 3.0:1 Ratio Marine Transmission / Gear

Model #: MG-507

Great Running Take-Out! VERY low hours - 507 twin disc transmission came off of a 350 Mitsubishi, transmission has a 2.99 reduction. No issues/ worked great reason for selling is because I had my boat rebuilt and installed a new motor and transmission

Ratio: 2.5:1

Straight Output