Composition :
- 2 anodized aluminum upper and lower linkage
- 3 stainless steel axles
- 5 stainless steel spacers
- 2 shock spacers

Rear lateral stifness improvement : 15%
Weight save : 100g
For Stellar, compatible from serial number ST 020 included.
For Atlas, compatible from serial number AT 011 included.
Compatible with previous serial numbers if you use wireless derailleur
For Nova compatible with all frames