Wossner Piston Kit - +0.50mm - 8951D050

Elevate your Polaris RZR 570 or Sportsman 570's engine performance and reliability with the precision-engineered Wossner 99.42mm +0.50mm oversize piston kit. Designed for riders who demand superior durability and a perfect fit for their engine rebuilds or performance upgrades, this kit provides the foundation for a robust and long-lasting powerplant.

Description

This Wossner piston kit is meticulously crafted to meet the rigorous demands of off-road riding, offering an exceptional blend of strength and lightweight design. With a bore size of 99.42mm and a +0.50mm oversize, it's specifically engineered for Polaris RZR 570 models from 2012-2021 and Sportsman 570 models from 2014-2025, ensuring a precise fit after your cylinder has been professionally bored and honed. Each Wossner high-performance piston is forged from a premium high-silicon aluminum alloy, known for its excellent heat resistance and reduced thermal expansion, which translates to a tighter piston-to-wall clearance and enhanced longevity. The advanced design minimizes friction and wear, providing optimal power delivery and improved throttle response across all RPMs. Investing in a Wossner piston kit means choosing a component trusted by professionals for its unwavering quality and performance.

Features & Highlights

• High-Strength Forged Construction: Engineered from a superior high-silicon aluminum alloy for exceptional durability and resistance to extreme engine conditions, ensuring a longer lifespan for your ATV's engine.
• Precision Oversize Fit: Specifically designed with a 99.42mm bore and +0.50mm oversize to restore optimal compression and performance in cylinders requiring a bore-out, providing a perfect fit and seal.
• Optimized Skirt Design: Features an advanced piston skirt profile that reduces friction and wear, promoting smoother operation and enhancing overall engine efficiency.
• Enhanced Heat Dissipation: The robust material and design contribute to superior heat management, preventing pre-ignition and maintaining consistent power output even under heavy loads.
• Complete Rebuild Solution: Includes the high-quality piston, piston rings, wrist pin, and circlips, offering a comprehensive package for a professional and reliable engine rebuild.
• Application-Specific Design: Tailored for exact compatibility with Polaris RZR 570 (2012-2021) and Sportsman 570 (2014-2025) models, guaranteeing OEM-level fitment and performance.

Technical Specifications

• Brand: Wossner
• Piston Diameter: 99.42mm
• Oversize: +0.50mm
• Application: Polaris RZR 570 (2012-2021), Polaris Sportsman 570 (2014-2025)
• MPN/SKU: 09106111
• Vendor Part Number: 8951D050

Important to Know

• Professional installation is highly recommended to ensure proper fitment and engine performance.
• Installation of this +0.50mm oversize piston requires professional boring and honing of the cylinder to the correct specification.
• Gasket kit and additional engine seals are not included and must be purchased separately.