Product Description The Zipp freehub for Cognition Disc and Cognition Gen 2 hubs is a spare part for the Cognition Disc rear hub (V1) as well as the Cognition rear rim brake hub of the 2nd generation. Specifications:Application:Road, Triathlon & Time TrialFreehub:Shimano Road, Campagnolo, SRAM XDRGearing:8-/9-/10-/11-speed, 9-/10-/11-/12-speed, 11-/12-speedFreehub Body Type:Axial Clutch™Technical Information:Freehub Body Material:AluminiumBearings:Swiss ABEC 5 stainless steelCompatibility:Cognition Disc V1 hubsalso for Cognition V1 Generation 2 rim brake hubs (from serial number 21P81803697*) * printed on the hub close to the Zipp logo Models:Shimano: Freehub:Shimano RoadGearing:8-/9-/10-/11-speedManufacturer Number:11.2018.051.000 Campagnolo: Freehub:CampagnoloGearing:9-/10-/11-/12-speedManufacturer Number:11.2018.051,001 SRAM XDR: Freehub:SRAM XDRGearing:11-/12-speedManufacturer Number:11.2018.051,002 Only available to European & Russian customers. Contents:1 x Zipp Cognition Disc freehub Manufacturer: SRAM LLC 1000 W. Fulton Market 4th Floor Chicago IL 60607 USA info@sram.com Distributor: SRAM Europe Sales and Services B.V. Paasbosweg 16 3862 ZS Nijkerk Netherlands info@sram.com