For sale a PERFORMANCE MACHINE SHOP SERVICE on your cylinder head by PRO-1 RACING HEADS. Services include new tough-met valve guides and mold-star90 valves seat installed in your cylinder head. Valve seat profiles are CNC MACHINED on a NEWEN BB CONTOUR cylinder head machine. These machine are new standard in the performance valve seat design. Note valves and guides seals are extra. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Engines & Engine Parts\Cylinder Heads". The seller is "az-motorcycle-man" and is located in this country: US. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech Republic, Finland,…