DT Swiss 180 EXP Road Rear Hub No Wasted Watts When you're spec'ing a custom road wheelset, the hub is where power delivery and rolling efficiency are won or lost. The 180 EXP sits at the top of the lineup for exactly that reason. Ratchet EXP technology fuses the drive ring and inboard ratchet into a single unit, which pushes the drive-side bearing outward for a wider stance and a stiffer axle. Every tooth on both ratchet faces engages at the same moment, so the load spreads across the full face instead of concentrating on a few pawl tips. Add SINC ceramic bearings and you have a hub that turns with almost no drag. Maintenance stays simple too: the redesigned endcaps pull apart without tools, so you can clean, inspect, or swap freehub bodies in minutes at the trailhead or on the road. Features Ratchet EXP freehub system fused ratchet and threaded ring reduce component count for lighter weight and greater durability versus the previous generation 36-tooth simultaneous engagement all teeth on both ratchet faces engage at once, distributing load evenly and eliminating the point-load failures common to pawl systems 15% increase in axle stiffness drive-side bearing repositioned outward by EXP integration widens bearing stance for a stiffer, more responsive rear end SINC ceramic bearings factory-installed, extremely low rolling resistance for maximum power transfer on every ride Tool-free disassembly notched endcap design allows full hub teardown and freehub body swaps without any tools Straight-pull flange with Centerlock rotor mount 24-hole straight-pull spoke bed paired with 12x142mm thru-axle and Centerlock disc interface All-aluminum hubshell machined shell keeps weight at the low end of the 180 range without sacrificing durability Freehub body convertible compatible freehub body system supports multiple drivetrain standards with fast swap capability | Dt Swiss | 180 Exp Road Rear Hub 12X142Mm, 24H, Centerlock, Xdr, 36T