1ST GEAR
front derailleur
Three chainrings of different
size rotating at the same speed
1ST GEAR – SAME SPEED AS CRANK
efneo gear
One chainring, rotating with
different speeds on three different gears
2ND GEAR
front derailleur
Three chainrings of different
size rotating at the same speed
2ND GEAR – 43% QUICKER THAN CRANK
efneo gear
One chainring, rotating with
different speeds on three different gears
3RD GEAR
front derailleur
Three chainrings of different
size rotating at the same speed
3RD GEAR – 79% QUICKER THAN CRANK
efneo gear
One chainring, rotating with
different speeds on three different gears
How it works
How to put it on a bike – step by step
How to replace a Bottom Bracket: youtube video