This is A BRAND NEW ADA billet head w/ 30cc domes
Fits all Kawasaki 650 Jet-Ski models 1986-1995
These high quality heads which will improve low end and top end performance
Includes 30cc domes which will run compression from 185-190 depending on elevation and porting
The domes have .015 squish relief at 78mm with a 9.5 degree angle