With the latest generation of the 240 hub, the strengths have been further enhanced. The latest DT Swiss Ratchet EXP® freehub system increases the bearing lifetime thanks to the increased bearing distance. The new version of the end caps simplifies the tool-free disassembly and makes maintenance easier. The hollow-machined ratchets transfers the energy invested directly into acceleration thanks to the 36 teeth. Features:Brake Interface:- The advantage of the Center Lock system is that the disc brake attachment is made with one single lock ring, which facilitates assembly. On the other hand, an advantage of the IS-System (6 Bolt) is that in the event of a necessary repair on the trail, no special tool is needed for disassembly. QR:- QR is short for quick-release and refers to a bike wheel mounting system with a clamping mechanism. It makes it possible to mount wheels quickly or to remove them from the frame without tools. On a quick-release system, the dropouts on the frame and fork are open on a thru-axle system, they are closed.SRAM XDR RD. (AXDR):- Aluminum freehub body for SRAM 12-speed road cassettes with XDR intake. Specifications:- Net weight: 188 g- Field of application: Road- Axle system: 5 mm quick release- Built-in dimension: 130 mm - Brake Interface: Non disc - Cassette interface: Sram XDR - Freehub body: SRAM XDR RD. (AXDR)- Freehub system: Ratchet EXP 36- Number of holes: 24 Technology:Bearing Technology:- DT Swiss hubs are designed to function optimally once installed in a bicycle. To achieve this, the clamping force created by the wheel mounting system must be taken into account when constructing a hub. Learn how to ensure the optimal rotating property of the ball bearings and discover why DT Swiss does not offer hubs with adjustable bearing clearance.