Wiseco 0910-3963 Pro-Lite Piston Kit 39.50mm KTM 50 SX 2009–2025

Wiseco 0910-3963 Pro-Lite Piston Kit 39.50mm KTM 50 SX 2009–2025

The Pro-Lite piston kit is engineered for all-purpose 2-stroke riding where durability, throttle response, and consistent power delivery are critical. Designed specifically for modern 50cc mini motocross engines, this Wiseco Pro-Lite piston kit uses a dedicated forging process to optimize strength-to-weight ratio, delivering improved reliability and increased horsepower under race and high-hour riding conditions.

Manufactured using advanced forging and precision machining techniques, the Wiseco Pro-Lite piston kit features additional lightening operations to enhance throttle response while maintaining long-term durability. Engineered, forged, and machined in the USA, this piston kit is ideal for race rebuilds, preventative maintenance, and performance-focused engine refreshes on Gas Gas, Husqvarna, and KTM 50cc models.

Key Features

• Pro-Lite forged piston designed for all-purpose 2-stroke riding
• Dedicated forging design optimizes strength-to-weight ratio
• Extra lightening operations improve throttle response
• Enhanced durability, longevity, and horsepower
• Engineered, forged, and machined in the USA

Vehicle Fitment

• 2021–2025 Gas Gas MC 50
• 2017–2025 Husqvarna TC50
• 2009–2025 KTM 50 SX

Frequently Asked Questions

Is this piston suitable for race use?
Yes, the Pro-Lite Series is designed for race, practice, and high-hour applications where durability and throttle response are essential.

What bore size is this piston?
This piston kit is sized at 39.50 mm and must match the cylinder bore size for proper fitment.

Is this piston made in the USA?
Yes, the piston is engineered, forged, and machined in the USA.

This piston kit is a proven upgrade for restoring engine performance, improving throttle response, and ensuring long-term reliability in competitive 50cc mini motocross engines.

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