This set is made to replace your axle and protect the chainstay main pivot bearings of your bike.
This main pivot axle set is compatible with:
. JEFFSY 27 MK1 AL 2017-2019
. JEFFSY 27 MK1 CF 2017-2018
. JEFFSY 29 MK1 AL 2016-2019
. JEFFSY 29 MK1 CF 2016-2018