SKU:11-2253
The Keith Black 390 hypereutectic piston set uses a 3.5 inch bore and an 8.3:1 compression ratio, oversize.010, designed for FL and FX Harley-Davidson models from 1978 to 1984. The piston alloy is cast in a permanent steel mold and ships with a piston ring set.
Made in Mexico, this piston kit is engineered for precision and durability in vintage engines, offering a proper fit for rebuilds and performance upgrades that require a.010 oversize bore. It is compatible with Harley Davidson FL and FX models listed in the product details.
Break-in is essential: run the engine at moderate speeds for at least 500 miles and avoid lugging in low gears to ensure the new pistons and rings seat correctly. For installation steps, refer to the official guide linked in the product details.
Complementary items recommended for a smooth install include the 11-1364 piston ring set and tools such as a Ring-O-Matic ring compressor and connecting rod clamping tools. Keith Black focuses on high-quality engine components designed to meet OEM specifications and deliver reliable longevity in classic Harley-Davidson builds.
The Keith Black 390 hypereutectic 3.5 inch bore piston set has a 8.3:1 compression ratio and is oversize.010. Piston set alloy is cast in a permanent steel mold and includes rings.Upgrade your Harley Davidson engine with the Keith Black KB297.010 80 inch FLH-FX piston set, designed for precision and durability. Crafted in Mexico, these pistons are engineered to provide optimal performance and long-lasting reliability in vintage Harley Davidson models from 1978 to 1984. The set includes pistons optimized for.010 oversize bore, ensuring a proper fit for your rebuild or performance enhancement. Proper break-in is critical; run the engine at moderate speeds for at least 500 miles and avoid excessive running in lower gears to ensure the new pistons and rings seat correctly. For detailed installation instructions, refer to the official guide linked in the product details. This piston set is compatible with Harley Davidson FL and FX models from the late 1970s through early 1980s, providing a perfect fit for your restoration or upgrade project. Complement this set with recommended accessories such as the 11-1364 piston ring set or specialized tools like the Ring-O-Matic ring compressor and connecting rod clamping tools for a smooth installation process. Trust Keith Black for high-quality, performance-focused engine components that meet OEM specifications and provide exceptional longevity.
Features:
Couldn't load pickup availability
