Serfas TBM-40 Tailbones® Memory Foam Dual Density Saddle Colour:Black Schwalbe Energizer Active Plus

Schwalbe Energizer Active Plus

This allows you to replace and repair your derailleur and get your old damaged derailleur back into operation

3)12 splines

Solid metal housing

Speed (RD): 12s

Serfas TBM-40 Tailbones® Memory Foam Dual Density Saddle Colour:Black Schwalbe Energizer Active PlusAbout Serfas TBM 40 Tailbones Memory Foam Dual Density SaddleSerfas' latest addition to the Tailbones family introduces a top layer of Memory Foam for a more personalized feel and added comfort. Serfas Tailbones saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort. Features90