2.10 Production Cup Classes
C. The stock airbox, air box cover, air filter and intake snorkel must remain in place and connected as they came from the factory. The air box drains may be sealed for fluid retention. No other modifications of the airbox, air filter or intake snorkel is permitted.

New Rule
2.10 Production Cup Classes
C. The stock airbox, air box cover, and intake snorkel must remain in place and connected as they came from the factory. The stock air filter may be replaced with an OEM style replacement. The air box drains may be sealed for fluid retention.

2.10 Production Cup Classes
I. Suspension may be modified with different springs, valves and oil. The stock rear shock body and stock fork tubes must be retained and unmodified.

New Rule
2.10 Production Cup Classes
I. Suspension may be modified with different springs, valves and oil. The stock rear shock may be changed or modified but must remain the same type as original.

2.10 Production Cup Classes
N. Tires must be DOT rated tires only.

New Rule
2.10 Production Cup Classes
N. Tires may be replaced with tires of unlimited origin. Rain tires may be used if a race is declared to be a wet race.