Drag Specialties Cast Piston - 3.875" Bore - +.005" - 21989-07+.005

Elevate your engine's performance and reliability with the Drag Specialties replacement piston kit. Designed for discerning riders, this kit provides OEM quality construction, ideal for rebuilding or refreshing your motorcycle's engine with precision and durability.

Description

Experience robust power and longevity with the Drag Specialties replacement piston kit, engineered from high-grade, OEM quality cast aluminum alloy. This kit is the perfect solution for an economical yet high-performing engine refresh, offering exceptional value without compromising on quality. Each piston is meticulously crafted to a 3.875" bore size with a +0.005" oversize, ensuring a precise fit for your engine. Some Drag Specialties motorcycle pistons feature an advanced coating that significantly extends piston life, actively reduces friction, and promotes cooler running engines, contributing to improved overall engine health and efficiency. With a compression ratio of 9.6:1, these pistons are designed to deliver enhanced power output, making them an excellent choice for riders seeking both reliability and a performance boost. The comprehensive kit includes two pistons, along with the necessary wrist pins and clips, simplifying your engine rebuild process.

Features & Highlights

• OEM Quality Cast Aluminum Alloy: Manufactured from premium cast aluminum for exceptional durability, reliability, and a perfect fit as an OEM replacement.
• Advanced Piston Coating: Select fitments benefit from a specialized coating that reduces friction, extends piston lifespan, and helps maintain cooler engine temperatures.
• Optimized for OEM Replacement: Ideal for restoring original engine specifications, providing dependable performance and compatibility.
• Economical Performance Solution: Achieve great performance and reliability in an all-in-one, cost-effective package for your engine rebuild.
• Complete Two-Piston Kit: Each kit comes with two high-quality pistons, along with the essential wrist pins and clips for a straightforward installation.
• High 9.6:1 Compression Ratio: Engineered to deliver improved power and responsiveness, enhancing your motorcycle's engine output.

Technical Specifications

• Units: Kit
• Product Name: Piston Kit
• Piston Material: Aluminum
• Bore Size: 3.875"
• Bore Oversize: +0.005"
• Stroke Length: 4-3/8"
• Compression Ratio: 9.6:1
• Vendor Part Number: 21989-07+.005

Important to Know

• Piston rings are not included and must be ordered separately. This kit accepts OEM or Hastings rings.