Wiseco Pistons: KTM 50SX/65SX/65XC/85SX/85XC/105SX/125SX/1125EXC/125XC-W/144SX


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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


50SX 09-2022, 65SX/XC 00-2008, 65SX 09-2022, 65XC 2009, 85SX 03-2012, 85XC 2009, 85SX 13-2022, 85XC 2009, 105SX 04-2011, 125SX 01-2000, 125SX 01-2022, 125EXC 09-2016, 125XC-W 17-2019, 144SX 2008

Piston Type

Pro-Lite, Racer Elite, GP Series, ArmorGlide


39.50mm, 41.50mm, 45.00mm, 47.00mm, 52.00mm, 54.00mm, 54.25mm, 56.25mm, 56.00mm, 58.00mm


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Make Model Year
KTM 105 SX 2004 - 2011
KTM 125 EXC 2009 - 2016
KTM 125 SX 2001 - 2022
KTM 125 XC-W 2017 - 2019
KTM 144 SX 2008
KTM 50 SX 2009 - 2022
KTM 65 SX 2000 - 2008
KTM 65 SX 2009 - 2022
KTM 65 XC 2000 - 2008
KTM 85 SX 2003 - 2012
KTM 85 SX 2013 - 2022
KTM 85 XC 2009
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