We make custom window pistons these are perfect for our china girl engine helps improve hp in both piston port and reed engines
the low cut style is perfect for piston port engines or those with a reed and 3rd transfer port, will increase top end Hp
the normal window style is best suited for your reed block intake engines for all around power in all ranges these are a standard will work with or with out boost port.
-Boost Port Window / Low Cut
these are the best you can get for a trench port /boost port reed engine these increase the intake velocity in the case through the trench port to keep up with the transfer port velocity.
We cross hatch all our pistons in house to increase the lubrication in the cylinders
These pistons are the best for your high performance china gal engines.