How it works?

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

VS

ACTIVE GEAR

1 2 3
1 2 3
vs

How it works

How to put it on a bike – step by step

How to replace a Bottom Bracket: youtube video