Wiseco Big Bore Replacement Piston | Forged 440cc Piston for Honda TRX400EX, TRX400X, XR400R
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Wiseco Big Bore Replacement Piston | Forged 440cc Piston for Honda TRX400EX, TRX400X, XR400R
Unleash the full potential of your 440 big bore kit with the Wiseco Big Bore Replacement Piston, engineered for riders who demand maximum power and reliability. Wiseco’s forged pistons are crafted from a premium aluminum alloy designed to withstand the extreme torque and horsepower produced by big bore engines, ensuring long-lasting performance in the most demanding conditions.
Each piston features a precision-machined proprietary skirt design that reduces piston rock, resulting in smoother operation and improved efficiency. The ArmorGlide™ skirt coating provides exceptional lubrication, minimizing friction and wear to extend engine life. With an 11:1 compression ratio, this piston delivers a perfect balance of power and durability, making it a must-have upgrade for serious off-road riders and racers.
Key Features:
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Forged from high-strength aluminum alloy for superior durability
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Proprietary skirt profile reduces piston rock for smoother performance
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ArmorGlide™ skirt coating enhances lubrication and efficiency
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11:1 compression ratio for optimal power gains
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Built to handle the extreme demands of big bore engine setups
Fitment:
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Honda TRX 400EX (1999–2008)
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Honda TRX 400X (2009, 2012–2014)
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Honda XR400R (1996–2004)
Package Includes:
1x Wiseco Big Bore Replacement Piston with rings and pin
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