Features:

• All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
• Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
• Forged Replica pistons are forged from 2618 aluminum for superior strength and durability
• Forged High Compression pistons improve power and torque across entire rpm range
• Forged Big Bore pistons increase engine*s displacement, torque, and peak horsepower
• Forged Replica pistons are forged OE replacements
• All pistons are heat treated with a T-5 hardening and tempering cycle
• Replica pistons and all rings are OEM replacements
• Kits include piston, rings, wrist pin and circlips
• Two stroke replacement rings are sold individually (Example if your piston has two rings you will want to order two rings)
• Four-stroke piston rings sold as a set

Fitment
Yamaha YFZ450 2004
Yamaha YFZ450 2005
Yamaha YFZ450 2006
Yamaha YFZ450 2007
Yamaha YFZ450 2008
Yamaha YFZ450 2009
Yamaha YFZ450 2012
Yamaha YFZ450 2013
Yamaha YFZ450R 2009
Yamaha YFZ450R 2010
Yamaha YFZ450R 2011
Yamaha YFZ450R 2012
Yamaha YFZ450R 2013
Yamaha YFZ450R 2014
Yamaha YFZ450R 2015
Yamaha YFZ450R 2016
Yamaha YFZ450R 2017
Yamaha YFZ450R 2018
Yamaha YFZ450R 2019
Yamaha YFZ450X 2010
Yamaha YFZ450X 2011