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VITAMIN B6 & B12
the Cervelo Headset Split Ring 312 enhances your bike's precision handling
control and a refined ride feel
Excellent air retention for fewer top-ups between rides
Reliable build: 24/28 straight-pull spokes
Kogel BB86/92 Seal Type:Cross Seals VITAMIN B6 & B12SEAL OPTIONS Cross Seals (Green) Road Seals (Blue) We always encourage and recommend the use of Cross seals where possible. FITMENT 41mm diameter SHELL WIDTH 86. 5 91. 5mm (nominal) COMPATIBILITY Shimano Hollowtech II, SRAM GXP, and most 24mm spindle systems. *System includes GXP Reducer ABOUT Kogel Hybrid bearings use premium grade Silicon Nitride (Si3n4) Bearings and premium hardened steel bearing races which are mirror polished to perfection. The