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The KB Performance Piston Kit is engineered for high-performance M8 engines, providing reliable durability and precise fitment for optimized engine operation. Designed to fit 4.250-inch bore cylinders, this kit includes pistons, rings, pins, and locks, offering a comprehensive solution for your engine rebuild or upgrade. The piston features a Type 3 hard-anodized crown that delivers excellent corrosion resistance, especially beneficial when using alcohol-added fuels. Its hard-anodized top ring groove prevents micro-welding of the rings to the groove and creates a hard, flat surface that ensures smooth rotation of the rings, promoting better sealing and longevity. The valve pockets are designed to accept intake and exhaust valves up to +4.00 mm oversized, accommodating performance modifications effectively.
The heavy-duty wrist pins with a precise 0.927-inch diameter ensure excellent fitment, reducing wear and enhancing durability during high-stress operation. The Line2Line AST skirt coating starts with near-zero wall clearance and hones the cylinders during break-in to establish the correct oil wedge, maintaining piston stability, reducing noise, and improving ring seal. The OE-style round wire locks are user-friendly for quick installation, making assembly straightforward. This piston kit is ideal for engines requiring a 124-inch big bore configuration and is compatible with 4.250-inch bore cylinders, sold separately. The combination of advanced materials and design features makes this kit suitable for demanding performance applications.
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