Wiseco Pistons: Kawasaki KLX110/KLX125/KX250F


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Wiseco 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


KLX110 02-2020, KLX125 02-2006, KX250F 04-2005, KX250F 04-2009, KX250F 07-2009, KX250F 2010, KX250F 11-2014, KX250F 15-2016, KX250F 17-2018, KX250F 2019, KX250F 2020, K250F 21-2023, KX250X 21-2022

Piston Type

Standard, ArmorGlide, ArmorGlide Boxed Forging, Racer Elite


11:1, 13.1:1, 13.2:1, 14.1:1, 13.5:1, 14:1, 14.2:1, 14.5:1, 13.8:1, 13.7:1


53.50mm, 54.00mm, 57.00mm, 58.00mm, 61.00mm, 77.00mm, 79.00mm, 83.00mm, 78.00mm


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Make Model Year
Kawasaki KLX110 2002 - 2020
Kawasaki KLX125 2002 - 2006
Kawasaki KX250F 2010
Kawasaki KX250F 2019
Kawasaki KX250F 2020
Kawasaki KX250F 2004 - 2005
Kawasaki KX250F 2007 - 2009
Kawasaki KX250F 2011 - 2014
Kawasaki KX250F 2015 - 2016
Kawasaki KX250F 2017 - 2018
Kawasaki KX250F 2021 - 2023
Kawasaki KX250X 2021 - 2022
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