Wossner Forged Piston Kit - 78mm Bore - 250cc - Size A - 8905DA

Unleash the full potential of your 250cc 4-stroke engine with the high-performance Wossner Standard Series piston kit. Engineered for precision and durability, this kit delivers a significant upgrade in power and reliability, ensuring your ride performs at its peak.

Description

The Wossner Standard Series piston kit is meticulously designed for motorcycle enthusiasts seeking to enhance their 250cc 4-stroke engine's performance. Each Wossner forged piston is crafted from aerospace-grade aluminum alloy, ensuring exceptional strength while maintaining optimal lightness through precision machining. This results in superior durability in critical areas like the crown and skirt wall cross-section, even under the demands of a high 13.2:1 compression ratio.

A key feature is the advanced Molybdenum Disulphite (Moly) skirt coating. This permanent coating significantly reduces friction and piston rock, contributing to quieter operation, improved engine efficiency, and assisting with proper break-in. With a precise 77.94 mm piston diameter (for a 78.00 mm bore size) and a robust dual-ring design featuring nitride coated steel cast rings, this motorcycle piston kit provides a tight seal and reliable power delivery, making it an ideal choice for both standard replacement and performance upgrades.

Features & Highlights

• Enhanced Durability & Performance: Forged from aerospace-grade aluminum alloy, these pistons offer exceptional strength, optimized for lightness in key areas like the crown and skirt wall cross-section, ensuring long-lasting, high-performance operation.
• Reduced Friction & Wear: The permanent Molybdenum Disulphite (Moly) skirt coating actively minimizes friction and piston rock, leading to quieter engine operation, improved efficiency, and extended piston life.
• Optimized Compression: Designed with a high 13.2:1 compression ratio, this kit maximizes combustion efficiency, delivering increased power and responsiveness from your 250cc 4-stroke engine.
• Complete Kit for Easy Installation: Each Wossner forged piston kit includes the piston, high-quality rings (nitride coated, steel, cast), a piston pin, and retaining clips, providing all necessary components for a straightforward installation.
• Precision Engineering: Featuring a precise 77.94 mm piston diameter and a robust dual-ring design, this kit ensures an excellent seal and consistent power delivery, optimized for a 78.00 mm bore.

Technical Specifications

• Brand: Wossner
• Model: Standard Series
• Engine Type: 4-Stroke
• Displacement: 250 cc
• Piston Type: Dual Ring
• Piston Material: Forged Aluminum Alloy
• Piston Diameter: 77.94 mm
• Bore Size: 78.00 mm
• Compression Ratio: 13.2:1
• Skirt Coating: Molybdenum Disulphite
• Ring Material: Nitride Coated, Steel, Cast
• Piston Size: Standard Size A
• Units: Kit
• Vendor Part Number: 8905DA