CNC milling helps eliminate the variances that hand porting can produce. The head was developed on the flow bench in conjunction with dyno and track testing to ensure the ultimate in performance and durability. GYTR Performance Camshaft Kit is included, as well as stock valve train and cam gears for durability and easy maintenance. GYTR Head Assemblies are used by Yamaha SX/ MX and ATV Race Teams. DOES NOT INCLUDE OVERNIGHT, EXPEDITED OR INTERNATIONAL. The item "YAMAHA 1SM-E11B0-T0 GYTR PORTED CYLINDER HEAD ASSY 1SME11B0T0 FREE SHIPPING" is in sale since Thursday, October 3, 2019. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Cylinder Heads &…