DSM Automatic Transmission Straight Cut Planetary Gear Set. These are stronger than OEM material, a thicker tooth profile for reduced bending stress, and approximately 5% more effective gear width at the lower planets by optimizing thrust washers. These are an improvement from OEM parts but will not be indestructible. They will require proper oil pressure feeds (minimum 60psi) and high quality oil with extreme pressure additives. 
 
We are working with Darren Thomas Racing in Choctaw, OK to provide an assembly service for those interested. If you select this option parts will ship directly from their location and they will contact you with additional details including core options. 
 
An assembly tool ($75) will be required for people choosing to assemble them. It's a one time purchase and reusable.