• New T-box forgings and DLC coated wrist pins on forged pistons with highest compression ratios for increased strength and performance.
• All piston skirts are coated with a high-tech Molybdenum Disulfide coating for faster break-in time and increased piston life
• Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston.
• Forged pistons are forged from 2618 aluminum for superior strength and durability.
• Forged High Compression pistons improve power and torque across entire rpm range.
• Forged Replica pistons are forged OE replacements
• All pistons are heat treated with a T-5 hardening and tempering cycle.
• Replica KTM 2-stroke pistons are factory supplied to KTM
• All rings are OEM replacements.
• Top end piston kit includes piston, rings, pins, circlips, top end gaskets, and wrist pin bearing or cam chain where applicable.

Fitment: 
1999|Yamaha|YZ250|
2000|Yamaha|YZ250|
2001|Yamaha|YZ250|
2002|Yamaha|YZ250|
2003|Yamaha|YZ250|
2004|Yamaha|YZ250|
2005|Yamaha|YZ250|
2006|Yamaha|YZ250|
2007|Yamaha|YZ250|
2008|Yamaha|YZ250|
2009|Yamaha|YZ250|
2010|Yamaha|YZ250|
2011|Yamaha|YZ250|
2012|Yamaha|YZ250|
2013|Yamaha|YZ250|
2014|Yamaha|YZ250|
2015|Yamaha|YZ250|
2016|Yamaha|YZ250|
2016|Yamaha|YZ250X|
2017|Yamaha|YZ250|
2017|Yamaha|YZ250X|
2018|Yamaha|YZ250|
2018|Yamaha|YZ250X|
2019|Yamaha|YZ250|
2019|Yamaha|YZ250X|
2020|Yamaha|YZ250|
2020|Yamaha|YZ250X|
2021|Yamaha|YZ250|
2021|Yamaha|YZ250X|
2022|Yamaha|YZ250|
2022|Yamaha|YZ250X|
2023|Yamaha|YZ250|
2023|Yamaha|YZ250X|
2024|Yamaha|YZ250|
2024|Yamaha|YZ250X|