Seller notes

Crankshaft Breather Reed Valves - +.30This S&S Cycle Cranshaft Breather Reed Valves fits your 1991 Harley Davidson FXDB-S Dyna Glide Sturgis and is perfect for a tune up or performance upgrade. S&S Cycle Cranshaft Breather Reed Valve for 1991 Harley Davidson FXDB-S lw Status: In Stock Condition: New GAIN PEACE OF MIND: Consists of 3 steel reeds that are normally in the closed position. When pistons travel downward in the cylinders, the air in the crankcase is compressed and pressure in the crank...

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