Hastings Piston Ring Set for 107 CI Engines +0.010" Oversize

Elevate your engine's performance and reliability with the Hastings 107 CI Piston Ring Set, engineered for precise fitment in 107 cubic inch engines requiring a +0.010" oversize bore. This premium replacement set ensures optimal combustion control and oil management, crucial for high-performance motorcycle engine rebuilds.

Description

Designed and manufactured in the USA, this comprehensive Hastings Piston Ring Set provides a complete solution for two pistons, featuring advanced ring technologies for superior engine function. The set includes top compression rings, second compression rings, and oil control rings, each meticulously crafted for specific roles. The top compression rings are Barrel Face, coated using a state-of-the-art PVD (Physical Vapor Deposition) process. This coating significantly enhances heat transfer between the piston and cylinder wall, while effectively controlling combustion chamber gases, allowing your piston to efficiently convert expanding gas energy into crankshaft power. The second compression rings utilize a Napier design, featuring a reverse twist and taper-machined face that duplicates the scraping edge of a positive twist torsional ring. This promotes exceptional side sealing, preventing oil from being forced under and behind the ring, leading to improved oil economy and reduced emissions. For precise oil control, the set incorporates Three Piece Flex Vent oil control rings. Their innovative three-piece design allows for rails with a small cross-sectional area, ensuring better conformability to the bore and providing uniform pressure through four steel rails and two expanders for consistently positive oil management.

Features & Highlights

• Advanced PVD-Coated Top Rings: Barrel Face top compression rings with Physical Vapor Deposition (PVD) coating optimize heat transfer and combustion gas control, maximizing engine power output.
• Napier Second Compression Rings: Engineered with a reverse twist and taper-machined face to provide superior side sealing, significantly improving oil economy and preventing oil bypass.
• Three Piece Flex Vent Oil Control Rings: Innovative three-piece design ensures exceptional conformability to the cylinder bore, delivering uniform pressure and positive oil control for extended engine life.
• Optimized for 107 CI Engines: Specifically designed for 107 cubic inch engines, with a +0.010" oversize piston fitment and a 3.937" bore, ensuring precise compatibility for rebuilds.
• Complete Two-Piston Set: Includes all necessary rings (top, second, and oil control) for two pistons, making it ideal for V-twin or similar engine applications.
• Premium US-Made Quality: Manufactured in the USA, guaranteeing high-quality materials and precision engineering for reliable and long-lasting performance.

Technical Specifications

• Brand: Hastings
• Type: Replacement Piston Ring Set
• Units: Set (for two pistons)
• Bore Size: 3.937"
• Piston Size: +0.010" Oversize
• Displacement Compatibility: 107 CI (cubic inches)

Important to Know

• Includes enough rings for two pistons (two rings per groove, except for the oil control rails which consist of two rail rings per one expander ring).
• Designed for +0.010" oversize pistons and requires a corresponding cylinder bore.

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