808 Firecrest Tubeless Disc B1TSE design with 23mm internal width with tubeless and hookless rim profile ideal for wider tires at lower tire pressure Minimum 25mm tire width More than 300 g lighter than previous model ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement An all out aero 80mm rim profile ABLC Sawtooth dimple design helps manage air flow around the rim, and contributes to create a