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The BD 10R80 RoadMaster Transmission increases reliability and longevity for stock or slightly modified trucks. The common issues, including the leaking CDF Drum, are solved in this transmission. A brand-new modified valve body is installed to increase line pressure by approx. 30% to increase clutch holding capability and comes with a ProForce torque converter with new friction material. The additional fluid capacity held by the deep sump pan helps regulate transmission fluid temperatures and extend fluid service life.