Wiseco Pistons GAS GAS MC250F/EX250F/RR350/EX350F/RR400/RR450/MC450F/EX450F/RR520


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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


MC250F 21-2022, EX250F 21-2022, RR350 11-2014, EX350F 21-2022, RR400 10-2014, RR450 10-2014, MC450F 20-2022, EX450F 21-2022, RR520 10-2011


250, 350, 400, 450, 520

Piston Type

Racer Elite, ArmorGlide


14.5:1, 12.9:1, 14.1, 12.4:1, 12.0:1


78.00mm, 88.00mm, 95.00mm, 100mm


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Make Model Year
GAS GAS EX250F 2021 - 2022
GAS GAS EX350F 2021 - 2022
GAS GAS EX450F 2021 - 2022
GAS GAS MC250F 2021 - 2022
GAS GAS MC450F 2020 - 2022
GAS GAS RR350 2011 - 2014
GAS GAS RR400 2010 - 2014
GAS GAS RR450 2010 - 2014
GAS GAS RR520 2010 - 2011
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