R539 Front Derailleur Options:R539 Front Derailleur 9-Speed Triple 52/42/30T, Braze-On, Shimano Compatible The Specialized Offset model is

The Specialized Offset model is most suitable for Specialized Turbo systems using the ISIS mount including: Levo

FS3 Fit System & Occipital Base Adjustment optimizes comfort by personalizing fit to individual head shape

Not only is it the fastest in the tunnel

Pliers works with 9-

thanks to an updated dust wiper seal design and increased oil volumes

R539 Front Derailleur Options:R539 Front Derailleur 9-Speed Triple 52/42/30T, Braze-On, Shimano Compatible The Specialized Offset model isFull metal construction provides stiffness and durability in this Shimano 9 speed road compatible front derailleur. Designed for use with 52 42 30t chainrings