Latching pin assembly and deactivating rocker arm assembly

A rocker arm assembly, comprising:

• a latch assembly comprising:
• a main latch pin assembly comprising a first diameter on a first main pin face, and
• a secondary latch piston comprising a second diameter on a secondary piston face,
• wherein the secondary latch piston is configured to selectively act on the main latching pin assembly,
• wherein the main latch pin assembly is biased to oppose the secondary latch piston, and
• wherein the first diameter is greater than the second diameter;
• a primary arm configured to receive the main latch pin assembly, the primary arm comprises a latch shelf proximal a primary rocker shaft bore, and the main latch pin assembly is installed in a primary latch bore in the latch shelf;
• and
• a secondary arm configured to receive the secondary latch piston, the secondary arm comprises a latch extension proximal a secondary rocker shaft bore, and the secondary latch piston is installed in a secondary latch bore in the latch extension,
• wherein the secondary latch bore is stepped from a first inner diameter guiding the secondary latch piston to a second inner diameter that is larger than the first inner diameter,
• wherein the main latch pin assembly is biased to abut the second inner diameter when the secondary latch piston is passive,
• wherein the main latch pin assembly comprises a main pin body that is stepped from an outer diameter to the first diameter, and wherein a step abuts the second inner diameter when the secondary latch piston is passive.