Cylinder Works 21003-K02 Big Bore Cylinder Kit

For those looking to create the ultimate high-performance machine, this 3mm over Big Bore Kit making 478cc with standard compression will give you the increase in horsepower and torque you are looking for. The cast aluminum cylinder is Nickel Silicon Carbide (NSC) electroplated, providing a durable, low friction, wear resistant surface with oil retention capabilities, and allows for greater heat dissipation to the water jacket. Cylinder Works kits come with a Vertex piston that is forged for superior strength and durability, and is molybdenum disulphide coating for reduced wear and faster break in. Kit includes cylinder, piston, rings, wristpin, circlips, and special gasket kit with full instructions. Plus, no machine work to your engine or cases is required. Fits: Yamaha YFZ 450R 2009-2013, YFZ 450X 2010-2011.

• Fits: Yamaha YFZ 450R 2009-2013, YFZ 450X 2010-2011
• For those looking to create the ultimate high-performance machine, this 3mm over Big Bore Kit making 478cc with standard compression will give you the increase in horsepower and torque you are looking for
• The cast aluminum cylinder is Nickel Silicon Carbide (NSC) electroplated, providing a durable, low friction, wear resistant surface with oil retention capabilities, and allows for greater heat dissipation to the water jacket
• Cylinder Works kits come with a Vertex piston that is forged for superior strength and durability, and is molybdenum disulphide coating for reduced wear and faster break in
• Kit includes cylinder, piston, rings, wristpin, circlips, and special gasket kit with full instructions; plus, no machine work to your engine or cases is required