NEW Enduro Zero Ceramic Grade 3 6806 LLB Sealed Cartridge Bearing 30 x 42 x 7mm type_trainers-rollers With this adaptor piece

With this adaptor piece

Type: Tube Only

with Di2 hole

Chain: KMC Z-51

NEW Enduro Zero Ceramic Grade 3 6806 LLB Sealed Cartridge Bearing 30 x 42 x 7mm type_trainers-rollers With this adaptor pieceZero Ceramic bearings are the ultimate race day weapon. Oversized Grade 3 balls roll on races which are ground to a mirror finish after receiving Magnetite and then Cryogenic treatments for hardness and longevity, and slippery Silicone seals to produce minimum resistance. All measurements are in millimeters ABEC 5 precision cartridge bearing CERBEC USA Grade 3 Si3n4 Silicon Nitride balls 52100 high carbon Chromium alloy races Races receive 3 cryogenic