KH, have you seen the size of the main jets in your carbs? Add the size of two main jet holes and that is the max your system can flow. I do not care what size petcock you put on your bike. It is just a line of BS to get you to buy the product.Good lord these Triumps are just a rolling pile. I mean the petcock is not adequate, the coils weak, the spark plug wires substandard, the drive chain is messy, the carbs are poor, the air filter system is barely functional, the rev limiter is set to low, its just effen amazing they run at all.

Vegas