Wiseco Pistons: Yamaha YZ250F/YZ250FX/WR250F 12-2022


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Waseca MX Pistons
While Wiseco got its start in 2-stroke performance, the Wiseco team has remained at the forefront of powersports performance through
every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco offers a range of forged 4-stroke
pistons covering everything from the casual rider looking for durability to the professional-level racer competing for wins.

Wiseco Pro-Lite
• The Forged 2-stroke piston that started it all
• Great value for reliable fun factor • Refreshed performance from the track to the trail •
Optomizing forging design for strength optimization • Extra lightening operations for enhanced
throttle response • Wrist pin, rings and circlips included

Wiseco GP Series
• Designed for Endurance/High RPM Applications
• Designed with optimized features for long service life and top-end power
• Electra-Coated crown, ring groove and pin bore resists potential wear, combustion heat damages,
and ring micro-welding • ArmorGlife skirt coating reduces friction to optimize performance potential
• Wrist pin, rings and circlips included

Wiseco Racer Elite
Designed for Full-Race Applications
• First 2-stroke piston to be forged with 2000-series alloy, providing greater tensile strength
• ArmorPlating surface treatment on crown, in ring groove and pin bores protext from harmful detonation,
friction wear, and ring micro-welding • ArmorFit skirt coating conforms to the cylinder bore for optimized
fitment, translating to optimized performance • Wrist pin, rings and circlips included

Wiseco Forged Series
Multi-Purpose Riding and Racing
• A complete range of forged pistons engineered for each specific 4-stroke powersports engine
• Convering hundreds of applications across ATV, Dirt Bike, Street, Snowmobile, UTV, V-Twin and more
in a variety of bore size and complression ratio options • Forged material optimizes strength and service
life • Performance enhancing features varied across applicable applications to maximize durability and
power • Wrist pin, rings and circlips included

Wiseco Racer Elite
Designed for Full-Race Applications
• Engineered to be a complete racing piston package to compete at the highest levels
• Industry-first features including asymmetrical skirt, lapped ring and ring groove operation to minimize
operating friction and maximize ring seal for overall improved power
• CNC-machines, billet construction for improved strength to weight ratio
• Rings, circlips, and DLC-coated wrist pin included

Additional information


YZ250F 12-2013, YZ250F 14-15/ YZ250FX 15-16/ WR250F 15-17, YZ250F 16-18/ YZ250FX 17-19/ WR250F 18-19, YZ250F 19-22/ YZ250FX 20-22/ WR250F 20-22

Piston Type

ArmorGlide, Racer Elite, ArmorGlide Boxed Forging


13.5:1, 14:1, 14.5:1, 13.5:1, 13.8:1




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Make Model Year
Yamaha WR250F 2015 - 2017
Yamaha WR250F 2018 - 2019
Yamaha WR250F 2020 - 2022
Yamaha YZ250F 2012 - 2013
Yamaha YZ250F 2014 - 2015
Yamaha YZ250F 2016 - 2018
Yamaha YZ250F 2019 - 2022
Yamaha YZ250FX 2015 - 2016
Yamaha YZ250FX 2017 - 2019
Yamaha YZ250FX 2020 - 2022
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