
PRO DESIGN
PRO DESIGN COOL HEAD DOME STANDARD BORE 21CC PART# PD261SD NEW
PRO DESIGN COOL HEAD DOME STANDARD BORE 21CC PART# PD261SD NEW.
- CNC machined from billet aluminum
- Interchangeable O-Ringed domes allow you to adjust compression for fuel quality elevation timing or performance
- Substantial increases in cooling efficiency