Zipp Ceramicspeed Sealed Cartridge Bearing 61903 Modified Ceramic Kit MFPN=11.6815.006.010 The thermomoldable fit ensures a

The thermomoldable fit ensures a snug feel for the ultimate in comfort

Optimized for the industry-leading Bosch Gen4 motor as well as the light-and-quiet TQ HPR50 drive unit (Found on the 2023 Trek Fuel Ex-E) the RaceFace Era-E eMTB carbon crankset saves grams while staying scuff-free and looking great

To be used when the snow is in a stage going from cold to wet

Speedrocker XL fits up to 40-52mm while the standard model fits 28-42mm

Zipp Ceramicspeed Sealed Cartridge Bearing 61903 Modified Ceramic Kit MFPN=11.6815.006.010 The thermomoldable fit ensures aCeramicSpeed Bearing Upgrade SRAM Model ID: HU SPP A0 TECH SPECS Bearing Grade Zipp Ceramic Material Ceramic Number 61903 Modified