Enduro ZERO Derailleur Pulleys for Shimano 11-speed. Enduro Zero Pulley Assemblies use grade 5 ceramic bearings. Races are won and lost by derailleur pulley drag.

Sold in Pairs

9 Grams

ABEC 5 precision cartridge bearing

CERBEC USA Grade 3 Si3n4 Silicon Nitride balls

52100 high carbon Chromium alloy races

Races receive 3 cryogenic treatments and a rust proof Magnetite finish

"VV" type 2-lip non-contact Silicone labyrinth seals

Nylon/graphite retainer