SWORKZ S14 S12 Ceramic Ball Bearing Kit Choose Version:S14-3 Both have a 15mm rotor

Both have a 15mm rotor side thread length

The new bigger size does the trick but take it to another level of performance

8x22mm bearing)

these are the best balls period

SWORKZ S14 S12 Ceramic Ball Bearing Kit Choose Version:S14-3 Both have a 15mm rotorSWORKZ S14 or S12 Ceramic Bearing Kit: made from our legendary Ceramic Nitride Pro Series bearing material, diamond polished silicon nitride ceramic balls, HSR inner cage technology and proprietary tolerances, then sealed on both sides with our no contact seals. We top off each bearing with our 100% synthetic SIN oil for silky smooth and super fast world championship level performance.