Polaris 440 ProX Piston Kit - Wiseco - ProLite 2598CD - `01-`07. This Pro-Lite piston kit is a forged 2-stroke replacement designed for the Polaris 440 ProX/IQ models from 2001–2007, offering dependable, all-purpose performance for both trail and track use.

Built by Wiseco in Mentor, OH, the Pro-Lite series focuses on strength-to-weight optimization through dedicated forging and precision machining. The piston features extra lightening operations to improve throttle response without sacrificing durability. The kit includes high-quality rings, wrist pin, and circlips for a complete top-end refresh. With a 66.00 mm bore specification, this piston is intended for riders seeking a balanced upgrade that maintains reliability while restoring engine performance.

Features

• Forged Pro-Lite piston designed for 2-stroke Polaris 440 ProX/IQ (2001–2007)
• Dedicated forging for optimized strength-to-weight
• Extra lightening operations for improved throttle response
• Includes rings, wrist pin, and circlips for a full kit
• Engineered, forged, and machined in the USA (Mentor, OH)
• 66.00 mm bore specification

If you have questions about fitment, installation, or compatibility with your setup, call us directly — we're happy to help. We offer installation and customization services at our two locations in the Austin, Texas and Los Angeles, California areas. Call us at 512-982-9393 (TX) or 562-981-6800 (CA) for details or to schedule service.

If you are considering purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.