New genuine Cylinder Works cylinder head. Suzuki: K1100-80080. 2004-2006 Suzuki RM-Z 250. Always refer to a repair manual for proper tear-down, assembly, and break-in procedures (if applicable). 2004-2005 Kawasaki KX250-F.
This is straight up a great product, period!
As a former machinist, I noticed right away the precise CNC machined cuts on all the surfaces, the quality guide, seat install and the 3-angle seat cut. The bowl area was also blended far better than the factory on the old head!
I had no problem lapping the titanium valves into these seats. 45 minutes later, I had them seated and springs installed; de-burred the sharp edges in the combustion chamber and bolted the head on; the bike ran killer and pulled like new!
Great job guys, and I will be checking out your website for future purchases; Thanks!