Oz Reed Valve Kit; intake:19mm(Outside Diameter:19mm;Internal Diameter:15mm);
Compatible with 48cc/66cc/80cc engine cylinder with 40mm stud spacing only;
100% Fully Made By CNC machine;
Carbon Fiber; Compatible with 2 stroke gas engine kit 66cc/80cc;
Dose not compatible with 4 stroke kit; This product Comes with 12months Warranty. Any questions,please contact us firstly !We can help you solve the problem until you are satisfied.