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Active airflow four-layer ventilation system and a technical mesh back for breathability
}Shimano Dura-Ace SM-RT900 Disc Brake Rotor Lock Ring and Washer
more than most other carbon cages
Designed for Reduced rolling resistance thanks to the Corsa-inspired slick center strip
Model Intergrated Bolt Size 16mm
CeramicSpeed BB ALPHA Bottom Bracket - T47 86mm For 24mm/Shimano Spindle Road BLK ModelNumber=J3078 Active airflow four-layer ventilation systemA bottom bracket built to outlast your frame BB ALPHA features hardened stainless steel races hand built with grade 3 Silicon Nitride ceramic balls custom engineered seals and precision dust covers delivering up to 500% better moisture protection while still providing ultra low friction performance. The simplified spacer tube design and lighter 7075 aluminum cups ensure quick installation and a 10% weight reduction over previous generations. All
