DT Swiss PR 1400 Dicut 21 Oxic Rear Wheel 28"/18 Alu 130/5mm graphite

The top of aluminium road wheels. The ceramic OXiC surface coating brings brake performance to rim brakes like it has never been seen before. The rims are wide, asymmetric and lightweight, making for an outstanding stiffness to weight ratio. If set up tubeless, supreme comfort and grip are added to the athletic character. At just 1450 g, this wheelset is both extremely practical and competitive, very much in tune with its stealthy appearance.

Ratchtet System 36 T / 10° engagement
The engagement angle is the degree to which a hub spins freely before transfering the riders power to the wheel. The smaller the angle, the faster the leg power reaches the ground, so a smaller engagement angle is generally better. It is important to know though, that there are limits on the minimally possible angle, as the reliability of the free wheel system partially depends on the angle too. What makes the Ratchet System hubs truly unique, is the fact that all teeth of the two ratchets engage simultaneously every time. Pawl hubs in comparison engage only a couple pawls simultaneously. Furthermore, in the case of pawl hubs, the contact surface is rather small, whereas in the case of the Ratchet System, the whole front face engages, creating much smaller point loads. The result is the legendary reliability of the Ratchet System hubs and distinctive sound as the star ratchets rotate against each other!

Pro Lock
Pro Lock is a process where a patented, dual compound, adhesive liquid is injected into the nipple thread, allowing for extremely durable wheel builds. By threading the nipple onto the spoke the adhesive is activated and starts to harden. Retruing the wheel is still possible after the adhesive has hardened completely, with only a minimal decrease of its thread-lock function.

Oxic Technology
OXiC is a process in which a ceramic coating is electrochemically applied to the rim surface, making it extremely hard and wear resistant. The OXiC process achieves a high end looking, matte black finish which also guarantees the highest level of brake performance while reducing wear on the rim to the absolute minimum. The ceramic layer is achieved similarly to anodizing, by submerging the rim in an electrolyte solution while applying an electrical tension between the rim as one electrode and the container as the other. The decisive difference between anodizing and OXiC lies in the millions of plasma discharges that occur between the electrolyte and the rim, applying high temperature and pressure on the developing oxide layer. Due to that, the developing oxide layer melts, flows and solidifies again. During this process the amorphous (not aligned) structure of the oxide converts to a crystalline (aligned) one. This is why OXiC is so hard and wear resistant.