The ZC-Line Classic LED blinker in silver for Harley Davidson MM FORK Tubes from 1939 to 1941 combine modern technology with a classic design. These high-quality turn signals are equipped with an advanced "Stair Locking System", which enables easy assembly without the need to disassemble the fork. The elegant, anodized silver finish fits seamlessly into the overall picture of the motorcycles and offers a stylish alternative to the standard indicators.