Brand new with box. 20/24 hole. Uses a DT Swiss type star ratchet system.  Weight for the pair is 329g. New old stock. Star ratchet drive.

Fitted with Shimano HG 8-12 speed freehub. 

Durable, Dependable & Easy to MaintainSpecifically designed for the demands of modern road cycling, the Prime SR2 Hub provides reliable performance, using a new star ratchet drive system for quicker engagement and increased durability so you can enjoy smoother performance for longer.

New Star Ratchet System HubThe SR2 Rear Hub contains our new Dual Sprung Star Ratchet Hub Engagement System, which has been developed to bring the following performance benefits to the rider:

Ultra-lightweight hub shell for increased stiffness and power transferDual sprung hub mechanism for next level engagement36 points of engagement for instant pick up and power transferHeat treated carbon steel ratchet rings designed for optimum wear lifeFaster pick up that accelerates quicker ran a conventional hubEasily serviceable with no odd size bearingsBuilt for maximum durability, this hub features a super-lightweight CNC machined hub shell paired with fast, efficient Japanese stainless steel bearings and an incorporated notch in the newly developed end caps with tool-free freehub removal that simplifies disassembly and makes maintenance even easier.

Features:Material: Superlight forged & CNC machined 7075 alloy hub bodySpoke Type: J-BendBearings: Premium Japanese sealed cartridge bearings (Hub Shell: 2x 6902 | Freehub: 2x 6802)Hole Count: 24Points of Engagement: 36T star ratchet system (54T upgrade available separately)

Brake Standard: rim brake