What upgraded pistons are availabe?
The common choice is polycarbonate pistons, and these are made by several different maufacturers. In addition, you can get aluminum pistons, which are heavier, but have teeth that are more durable. All the pistons are interchangeable, except for the helical piston (also called the half-gear piston), which is to be used with the helical gear set. See gear set question. The polycarb pistons are said to be 50% lighter than the stock pistons, but exhibit 3 times the strength.
