TA Specialite Zephyr middle chainring.

The middle chainring for 3-speed road bike and MTB cranksets with shift assist.

The 110mm bolt pattern is the original MTB bolt pattern and is also used on 3-speed road bike cranksets. The smallest chainring that can be fitted is a 24-tooth, whilst the largest can be up to 56 teeth. MTB cranksets with this bolt pattern were produced until the late 1990s; one of the last models was the Shimano XTR crankset with a 5-bolt chainring mount.

Compatible with 8-, 9- and 10-speed road bike and MTB cranksets:

The standard chainrings are designed for 9-speed chains, but can also be used without any problems with 8- and 10-speed chains and cranksets. On the cranksets, the distance between the chainrings is determined by the crank arms. Therefore, it does not matter whether you use 8-speed, 9-speed or 10-speed chainrings.

Please note that the gap between the individual chainrings should not exceed 12 teeth. Otherwise, you will have to accept a reduction in shifting performance. For chainring setups with the largest chainring from 46 teeth upwards, please use Shimano’s XT front derailleur with a compatible cage. Road bike front derailleurs generally shift up to 55 teeth without any problems.

Herstellerinformation: Spécialités T.A., 41 bis rue de Laon, 02150 Sissonne, France, https://specialites-ta.com/