Reed and window piston not included. Requires a reed valve.
 
This cylinder is for use with the GTZ reed valve or the GTZ PRO reed valve.
 
Many companies do not properly port cylinders for use of reed valves. WE DO!
 
The new GTZ ULTRA race cylinder is fully decked out for use with reed valves in high performance setups. You must use a reed valve to take advantage of this cylinder's full potential.
 
WIDER HEAVILY PORTED EXHAUST
PORTED INTAKE
-AND MORE-