cylinder head stud Ø40mm ATHENA ATHENA Racing for kit 50cc on DERBI euro 1 & 2

Here is the spare cylinder head stud kit for ATHENA Racing aluminum DERBI EURO 1 and 2. Model with well designed high compression chamber, polished and mounted O-ring. The finish is high-end! Ideal for repair in case of breakage or wear on the joint plan, after tightening ...