SKU:11-2203
Keith Black 390 hypereutectic piston set,.020 oversize for a 3.438 inch bore, delivers 9.0:1 compression. Designed specifically for Harley Davidson FL series motorcycles from 1941 to 1950, it offers reliable performance for vintage engine rebuilds and restorations.
Crafted in Mexico, this complete piston set is optimized for high‑performance rebuilds. Each piston is manufactured to precise standards to ensure proper fit and function within your vintage Harley engine.
Proper installation and break‑in procedures are essential to maximize piston lifespan and engine performance. Run the engine at moderate speeds for at least 500 miles during break‑in, and refer to the detailed installation instructions available online to facilitate correct assembly and optimal performance.
The Keith Black KB263.020 piston set is designed specifically for Harley Davidson FL series motorcycles from 1941 to 1950, offering reliable performance and durability. Crafted in Mexico, this set includes pistons that are optimized for high-performance engine rebuilds and restorations. Each piston features precise manufacturing standards to ensure proper fit and function within your vintage Harley engine. Proper installation and break-in procedures are essential to maximize piston lifespan and engine performance. It is recommended to run the engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears during the break-in period. Refer to the detailed installation instructions available online to facilitate correct assembly and ensure optimal performance.
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