The SHIMANO SHADOW technology on the RD-M670 is ideal for an aggressive riding style
The narrow profile reduces the risk of unwanted contact with obstacles in rough terrain and, thanks to its design, prevents it from hitting the chain stay with constant high tension. The result is high performance with low noise emission.
The RD-M670 is available in the DIRECT MOUNT version, which allows the rear derailleur to be mounted directly on the dropout. For this purpose, the B2 plate on the rear derailleur was removed, which means that there is only one connection between the frame and rear derailleur instead of two. This results in more precise shifting, a stronger and more reliable connection between rear derailleur and frame and an even more precise positioning of the rear derailleur under the cassette. The design also makes it easier to fit and remove the rear wheel and gives frame designers more scope for development.
Shimano SLX - Drive where you want, how you want With the rider-tuned SLX you can ride on almost any terrain the way you want. The Dyna-Sys drive offers intuitive gradation for optimum energy transfer. No matter how rough, stony or muddy the terrain is, you benefit from optimum stability. The SLX allows you and your bike to become one with the trail.
Consistent shift performance
the switching mechanism does not go beyond the dropout
Is positioned out of the way of any obstacles, even in extreme conditions