![Stud of hemispherical cylinder head Ø50mm BIDALOT for kit 94cc RACING FACTORY on minarelli am6, DERBI euro 3 Stud of hemispherical cylinder head Ø50mm BIDALOT for kit 94cc RACING FACTORY on minarelli am6, DERBI euro 3](https://www.rrd-preparation.com/11566-large_default/bidalot-hemispherical-o50mm-cylinder-head-stud-for-94cc-racing-factory-kit-on-minarelli-am6-derbi-euro-3-4.jpg)
Reference: 211.0304
Cylinder head for kit 80cc POLINI Evolution Ø50mm on mécaboite driving DERBI euro 3 & 4
Ideal in case of crack, veiling, loss of compression of your high POLINI Evolution engine on DERBI EURO 3 and 4.