Sugarless REAR Boost Adapter 142x12 to 148x12 conversion
Boost Adapter converts 142x12mm rear hubs into 148x12mm BOOST standard.
Set includes two 3mm spacers, plus a rotor adapter, plus 6 pieces of longer Torx screws
Mounting is very easy:
Place one 3mm spacer left and right on the rear thru axle, between hub and frame dropouts.
Position the rotor adapter over the 6-bolt disc mount holes of your rear hub, and screw your disc rotor with the included longer Torx screws into the 6-bolt disc-mount holes on your rear hub.
You can put one drop of fluid screw-locker on each Torx screw before mounting, to secure the bolts additionally.