The first of the Dura Ace indexed shifters, released in 1984! These SL-7400 are 6 speed indexed or friction. The 7400 is in silver, while the later SL-7401 and SL-7402 are dark grey.
Dura-Ace was developed to give the professional racing cyclist a fraction-of-a-second advantage that can spell the difference between victory and defeat. Advanced functions like 8 speed SIS, Super SLR brakes and Shimano Total Integration provide the most refined feeling of control available in a group today. Ultra high-precision mechanisms, quality materials and rugged construction assure that Dura-Ace takes all the punishment that pro-level road racing can dish out
