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- ABEC 5 precision cartridge bearing
- Races receive 3 cryogenic treatments and a rust proof Magnetite finish
- “VV” type 2-lip non-contact Silicone labyrinth seals
- Sold in Pairs
- CERBEC USA Grade 3 Si3n4 Silicon Nitride balls
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Enduro Zero Pulley Assemblies use grade 5 ceramic bearings. Races are won and lost by derailleur pulley drag. ABEC 5 precision cartridge bearing. Races receive 3 cryogenic treatments and a rust proof Magnetite finish. “VV” type 2-lip non-contact Silicone labyrinth seals. Sold in Pairs. CERBEC USA Grade 3 Si3n4 Silicon Nitride balls. 9 Grams. 52100 high carbon Chromium alloy races. Nylon/graphite retainer.