All ported cylinder head packages ready to bolt on receive precision, proven port modifications held to exacting measured dimensions. I am not a fan of mirror polishing and have never seen any significant advantages on the dynamometer or flow bench. I prefer to spend my time and effort insuring dimensional integrity and consistency. Valve guides are modified for valve lift, individually fitted to each head to insure proper interference fit, reamed and finish honed to clearance and are application modified as appropriate to further enhance and streamline airflow. Valve to valve clearancing is performed to guarantee compatibility with your camshaft choice.
Combustion chambers are unshrouded for further airflow improvement and good combustion efficiency.
Each chamber is cc'd, equalized and then heads are milled for appropriate compression target. Intake manifold porting and matching to each head is part of the package. Flow testing and probing is performed to insure finished product. I offer recommendations for valve sizes, seat configuration, compression ratio, cam selection, springs, carburetor, intake manifold, air filtration, exhaust system and head flow requirements based on engine displacement, bike weight, rider usage and riding style. I also offer milling, welding and fabrication and custom exhaust system designing.