Transmission and transmission clutch system

A clutch comprising:

• a reaction plate disposed about a rotating element defining a first ring groove, wherein the reaction plate is configured to limit axial movement of friction plates and defines a second ring groove;
• a first retainer ring disposed in the first ring groove;
• and
• a second retainer ring disposed in the second ring groove thereby restricting movement of the first retainer ring in a radially outward direction.

A transmission comprising:

• a rotating element defining an exterior ring groove;
• a clutch-pack backing plate defining an interior ring groove and disposed about the rotating element such that the exterior and interior ring grooves are adjacent to each other;
• an exterior retainer ring disposed in the exterior ring groove;
• and
• an interior retainer ring disposed in the interior ring groove thereby restricting movement of the exterior retainer ring in a radially outward direction.