Vertex Cast BigBore Piston Kit for 2-Stroke 250cc Engines

Unleash the full potential of your 2-stroke 250cc engine with the Vertex Cast BigBore Piston Kit. Engineered for performance and durability, this piston kit provides a significant boost in displacement, torque, and peak horsepower, ensuring your ride delivers exhilarating power when you need it most.

Description

Designed as a direct replacement in original OE form for big bore cylinders, the Vertex Cast BigBore Piston Kit is meticulously crafted from a high-quality, gravity-cast aluminum alloy with an 18% silicone content. This unique composition results in an exceptionally light yet remarkably strong piston, ideal for the demanding conditions of motorcycle engines. Each piston undergoes a rigorous T-5 hardening and tempering cycle, a specialized heat treatment that dramatically enhances its overall strength and resilience against wear and tear.

To further extend piston life and optimize break-in time, the skirts are coated with an advanced Molybdenum Disulphite finish. This high-tech coating reduces friction and wear, promoting smoother operation and sustained performance over countless miles. With a precise bore size of 67.50 mm and a +1.10 mm piston size, this kit is perfectly suited for 2-stroke 250cc engines, maintaining a standard compression ratio while delivering increased displacement. The included piston rings feature a robust Nitride Coated, Steel, and Cast material construction, ensuring reliable sealing and long-lasting operation for your high-performance piston.

Features & Highlights

• Optimized Performance Increase: Specifically designed as a big bore piston, this kit significantly increases your engine’s displacement, torque, and peak horsepower, providing a noticeable boost in overall performance.
• Premium Gravity-Cast Aluminum Alloy: Constructed from a high-strength, gravity-cast aluminum alloy with an 18% silicone content, offering an ideal balance of lightness and extreme durability for demanding engine environments.
• Advanced T-5 Heat Treatment: Each piston undergoes a T-5 hardening and tempering cycle, a critical heat treatment process that fortifies the piston's structure for superior strength and extended service life.
• High-Tech Molybdenum Disulphite Skirt Coating: Features a specialized Molybdenum Disulphite coating on the piston skirts, which minimizes friction, accelerates break-in, and significantly increases piston longevity.
• OE Form Fitment: Engineered in original OE form, ensuring precise fitment and straightforward installation into your big bore cylinder.
• Durable Ring Construction: Equipped with Nitride Coated, Steel, and Cast piston rings, designed for excellent sealing, reduced wear, and consistent performance.

Technical Specifications

• Style: Cast Big Bore
• Units: Kit
• Bore Size: 67.50 mm
• Engine Type: 2-Stroke
• Piston Size: +1.10 mm
• Displacement: 250 cc
• Product Name: Piston Kit
• Ring Material: Nitride Coated, Steel, Cast
• Skirt Coating: Molybdenum Disulphite
• Piston Diameter: 67.45 mm
• Piston Material: Aluminum Alloy, Cast
• Compression Ratio: Standard
• Vendor Part Number: 22584110

Important to Know

• Replacement two-stroke piston rings are sold individually.
• Four-stroke piston rings are sold as a set.