Drag Specialties Replacement Piston Kit for 3.875" Bore

Enhance your engine's performance and reliability with the Drag Specialties 3.875" bore piston kit. This high-quality replacement kit provides OEM-level construction and durability, ensuring your motorcycle runs smoothly with optimal power.

Description

Designed for motorcycle enthusiasts seeking a dependable and economical solution, this Drag Specialties piston kit offers exceptional value without compromising on performance. Each piston is crafted from OEM quality cast aluminum alloy, providing the strength and heat dissipation required for demanding engine conditions. With a 9.6:1 compression ratio, these standard bore pistons are engineered to deliver consistent power output. Some specific fitments of these pistons feature an advanced coating that significantly extends piston life, actively reduces friction within the cylinder, and contributes to cooler engine operation—all crucial for long-term engine health and efficiency. This kit is an ideal choice for an OEM replacement, offering a perfect blend of affordability and reliable performance for your motorcycle.

Features & Highlights

• OEM Quality Construction: Manufactured from premium cast aluminum alloy, these pistons meet or exceed original equipment specifications for lasting durability and performance.
• Enhanced Engine Longevity: Select piston fitments include a specialized coating that minimizes friction, promotes cooler running temperatures, and extends the overall lifespan of your engine components.
• Optimized Performance: Engineered for a 9.6:1 compression ratio, these pistons ensure efficient combustion and consistent power delivery, making them ideal for OEM replacement applications.
• Economical & Reliable: Get great performance and reliability in one package, offering an excellent, cost-effective alternative to factory parts.
• Complete Kit: Each package conveniently includes two pistons, along with the necessary wrist pins and clips for a comprehensive installation.

Technical Specifications

• Product Type: Piston Kit
• Piston Material: Cast Aluminum Alloy
• Bore Size: 3.875"
• Bore Oversize: Standard
• Stroke Length: 4-3/8"
• Compression Ratio: 9.6:1
• Vendor Part Number: 21989-07

Important to Know

• Requires piston rings (OEM or Hastings) which are sold separately.