The varying number of pins for each of the three chain ring combinations (34/50, 36/52, 39/53) facilitates upshifting due to the optimised free strokes associated with each combination. The special drains on the inside of the outer chain rings optimise performance when downshifting in dead spots.
Optimised spring return
On rough roads, the spring positioned between the upper body and the pivot absorbs the vibrations, ensuring the chain always rest properly on the sprockets.
12-tooth jockey wheel on the rocker arm
Perfect for use with cassettes that have a wide range of teeth
Ensures constant chain tension
Adjustment of the initial rear derailleur position
Allows for exceptional adaptation to any sprocket pack (11-29 and 11-32)
The shifting movement of the rear derailleur keeps the upper jockey wheel on the rocker arm at a constant close distance from the sprocket in use.
Removable pivot on the upper body
Perfect functionality with standard drop-out (with pivot) and direct-mount (without pivot)
Weight 181 gr.