Drag Specialties Cast Piston Kit - 3.750" Bore - +.020" - 21930-99-020

Upgrade or refresh your engine with the Drag Specialties Twin Cam Piston Kit. Engineered for reliable performance, this premium cast aluminum alloy piston kit is specifically designed for Harley-Davidson Twin Cam motors, offering an ideal OEM replacement solution.

Description

Experience dependable engine performance with this high-quality Drag Specialties piston kit, meticulously crafted from OEM-quality cast aluminum alloy. This durable construction ensures excellent heat dissipation and longevity, making it a perfect choice for restoring your engine's original specifications or as a robust upgrade. Tailored specifically for Harley-Davidson Twin Cam motors, this kit provides a precise fit and reliable operation. With a bore size of 3.750" and a +0.020" oversize, it’s designed to address wear or facilitate a mild rebuild, ensuring optimal combustion with a 9.0:1 compression ratio. The kit includes two pistons, along with their essential wrist pins and clips, providing the core components needed for a seamless installation. Its thoughtful design also ensures compatibility with both OEM and Hastings piston rings, offering flexibility in sourcing additional components for your motorcycle piston replacement.

Features & Highlights

• OEM-Quality Cast Aluminum Alloy: Manufactured with precision using durable cast aluminum alloy, these pistons offer exceptional strength, heat resistance, and a long service life, matching or exceeding original equipment standards.
• Precision Engineered for Twin Cam Motors: Specifically designed for Harley-Davidson Twin Cam engines, ensuring perfect fitment and optimal performance for your motorcycle.
• Ideal OEM Replacement Solution: Provides a reliable and cost-effective option for rebuilding or refreshing your engine, restoring original power and efficiency.
• Complete Two-Piston Kit: Each package contains two high-quality pistons, complete with wrist pins and clips, offering a comprehensive solution for a standard engine refresh.
• Versatile Ring Compatibility: Engineered to accept both OEM and Hastings piston rings, allowing you flexibility in choosing your preferred ring set for optimal seal and performance.

Technical Specifications

• Type: Replacement
• Style: Cast
• Units: Kit
• Bore Size: 3.750"
• Bore Oversize: +0.020"
• Piston Material: Aluminum Alloy
• Compression Ratio: 9.0:1
• Vendor Part Number: 21930-99-020

Important to Know

• Requires Piston Rings: This kit includes pistons, wrist pins, and clips; however, piston rings are not included and must be purchased separately. Compatible with OEM or Hastings rings.